Still, the check engine light can be just a minor problem that is easy to repair. MAP sensor cleaning may be necessary if you're experiencing poor fuel economy, rough idle, hesitation or stalling on acceleration, or an illuminated check engine light. If the light goes off, we assume things are okay. It has not helped that GM historically has demonstrated the inability to produce a reliable diesel fuel injection system. How Electronic Fuel Injection Works. One to lubricate the engine components and the other to operate the fuel injectors. OBD-II Diagnostic Trouble Codes (DTC). You're driving home from work one day when the check engine light pops on. 9L six cylinder with Mazda 5 speed manual. Check engine light is on -- scanner indicated sensor in exhaust. If all are within specification, proceed to Step 9. Some fuel should come out of the opening. check engine light on solid and intermittent. If your car has a carburetor, check your carburetor adjustment and your choke to see whether the choke is first closing and then opening. This signals the check or service engine light to come on, letting the driver know there is an issue with their engine's performance. You need to get the computer scanned for trouble codes to proceed. If that was the problem, the light will turn off on its own. If the original cause of converter failure is intermittent, only the catalyst failure code may show up (masking the original reason for converter failure). Replace Faulty Fuel Injector(s) A fuel injector is used to deliver fuel into the engine via a nozzle. Should it be running like this if I just had it worked on?. Check engine light came on an reduced power due to limp mode. 9L six cylinder with Mazda 5 speed manual. One area that often gets overlooked when putting in a new fuel pump is cleaning the gas tank. ALWAYS check fuel pressure after installing new injectors - it should be between 45 and 55 PSI and should not drop below this spec under load. Luckily, with a specifically designed cleaning kit, a compressed air hose and a screwdriver, you can clean them yourself. I recently replaced a bad spark plug, CPU sensor, air filter, cleaned MAF sensor w/ MAF cleaner,used a STP gas treatment. In many cases, white smoke emanating from the tailpipe (often at idle once the engine reached operating temperature) typically means a worn out injector. Let’s take a look at 4 common fuel injector pump complications. If the check engine light comes on: Look for a serious problem that requires immediate attention. It has not helped that GM historically has demonstrated the inability to produce a reliable diesel fuel injection system. injector leak testing, injector spray pattern analysis, and ultrasonic cleaning of fuel injectors for almost every engine manufactured. In the derate (limp home) mode, the ECM will gradually reduce engine power after illuminating the red Stop Engine Lamp (SEL). Door Ajar - warning light. Harley-Davidson Fuel Injection basics It is a sad day in Hogville. OBD-II Diagnostic Trouble Codes (DTC). I am considering doing the fuel injection cleaning and the plugs and holding off on the gasket. I would also change fuel filter. I've only used Shell or Exxon gas the entire time I've had my car and Ive replaced the air filters about every 20,000-25,000 miles. In extreme cases additional injector lines may need to be loosened until air is bled. Remove stains ASAP on fiberglass and upholstery. 29th Mar 2007, 22:10. The electronic control unit (ECU) provides optimum fuel control and accuracy. I have a 2004 Prius with 130k. If there's a problem, the sensor will tell the engine control unit (ECU) which will turn on the engine management light. My Kia Soul just had a check engine light come on. Filled up the tank on friday. Going over the recommended service interval; If the vehicle uses Eolys™ additive, a low level in the tank can prevent regeneration. Much of this info came from Jim Conforti at Gateway Tech, 1995 and 1996. Now they say that the cleaning caused the intake to be clogged which is why the light is on. This article explains the core functions of the ECM. the fault injection warning is basically and engine management warning message - this usually means your cars ecu has picked up on fault somewhere on the engine itself wether it be a sensor giving out or becoming faulty or wiring to these / a fuel injection system problem usually one of the injectors,intake system problem / or a glow plug. What else should I try?. My Kia Soul just had a check engine light come on. At CARiD you will find the widest choice of premium 2019 Volkswagen Tiguan Fuel System Service from world-renowned brands. Pay attention to the fuel pressure gauge during cranking. My 2003 V6 Ranger was misfiring and after about 5 miles the Check Engine light blinked a little then stayed on. Changing spark plugs could be a good idea when… 1. Pull the fuel pump relay in the PDC and then attempt to start the engine. First we are going to be removing the injector lines. You need to get the computer scanned for trouble codes to proceed. How long should it take for the check engine light to go off?. contain a minimum amount of deposit-control additives to prevent a dangerous buildup in car systems. FCA had them check fuel system. I’ve replace 2 of them. While cranking, open the "T" handle valve that drains water from the fuel filter. The truck was recently serviced for an oil change at Midas with a fuel injector cleaning included. As soon as I started the car I noticed the Check Engine light was on and a tapping noise was coming from under the hood. But a new report by Motoring. My water in fuel light comes on, and I can't get it to shut off. The inputs are: O2 Exhaust Gas. Check engine light came on an reduced power due to limp mode. contain a minimum amount of deposit-control additives to prevent a dangerous buildup in car systems. Top-inside plug) at pins 20,21,22,23, at all times, and pin 26 with the key on. Since that time, every new car sold in the United States has required a "Check Engine" light, mainly to be compliant with Environmental Protection Agency regulations. Fouled fuel found in a vehicle tank can usually be linked to a few suspects — it either came from the refinery, the distributor or the filling station down the street from your customer. Misdiagnosing or ignoring a misfire can be very expensive. I've followed all of the directions from this thread. I've only used Shell or Exxon gas the entire time I've had my car and Ive replaced the air filters about every 20,000-25,000 miles. This page discusses how to do it. Cleaning your fuel injector system helps remove fuel build-up and deposits, clears the intake valves and cylinder heads, and flushes out the entire fuel system. In the engine work process, high fuel pressure might make …. However, if too little fuel is consumed, the engine may lack power for acceleration and passing. Kawasaki Vulcan 1500 Classic FI. Optimizers™ reverse-flush the injectors, providing added cleaning. But there are many other elements under the hood that can cause this problem. There is an electrical connection to the fuel gauge, and sometimes a second one for a low-fuel warning light. AFI Australia for the largest range of Fuel Injection and Engine Management parts for Wholesale and Trade Customers including Fuel Pumps, Lambda Sensors, Throttle Body, MAF, Fuel Injector, Fuel Injection Pump, Oxygen Sensor, Position Sensor, Coil Pack, MAP Sensor, Submersible Pump, O2 Sensor, Diesel Injector, Crank Sensor, Diesel Filter, Air Flow Sensor, Crankshaft Sensor, Crank Angle Sensor. Loose, Damaged or Missing Gas Cap Possibly the silliest reason that your check engine light is on, a loose, damaged or missing gas cap may cause your check engine light to come on. I had a fuel system cleaning performed on my car (2005 Kia Rio, ~54k miles). 1) I have a Toyota yaris 1999 1l cdx model. However, this is no reason to panic. Engine light came one, checked for codes and it was code 26. If you have power at all those pins, the ECM is bad. We will pretest your injector flow ratesas they are received off your engineultrasonically clean your injectorsand then provide after cleaning flow test results. The mass air flow (MAF) sensor is an important component which the engine control unit depends on. Purchase a fuel injector cleaner kit with a PEA cleaning fluid. 5/00 99 F-series loss of power or stall in 0° temps. Injector lines have been removed. This is how the fuel system is purged of air after the filters are changed, and how the injector pump is pressurized prior to start. They said my fuel injectors were dirty so I bought the cleaning fluid. Used premium gas hoping that would stop the shaking -- no such luck. They act the same than a clogged injector. How the "Check Engine" light works. However, engine heat and vibration is known to contribute to premature FICM failures. MAP sensor cleaning may be necessary if you're experiencing poor fuel economy, rough idle, hesitation or stalling on acceleration, or an illuminated check engine light. 2000 YM330D Will Not start Yanmar F18D John Deere engine 1610D Front Wheel Bolts. Disconnect one of the battery leads. Reason #3: The Fuel Injector is Clogged. Due to a check engine light last August, replaced fuel injector #4. If an intermittent fault does not reoccur after three consecutive trips, the Malfunction Indicator Light (MIL lamp) will go out but the code will remain in memory. When your Service Engine Soon light turns on, you won't know whether it's because of a P0087 or a completely different issue. Then after all my waiting, all of sudden they tell me my engine light is on and that I should come back in 3-5 days if the light does not go off. Now this isn’t always the case, but after some trouble shooting we’re usually the go-to shop when diesel drivers need refurbished, rebuilt, or new injectors. See why changing your filters, fluids, and warming your engine up can add to a long service life. If you have power at all those pins, the ECM is bad. That is not an "injection light". This article focuses on the most common, which is when the fuel injector doesn't spray any fuel at all due to an internal short circuit. A fuel injector can regulate fuel flow within milliseconds. The weird thing about cleaning the. I know many people that told me: "I bought car and the CEL came on after only 15 miles I drove it. 260 Miles later it comes back on and a PO4011 code comes on. ( I have been driving manual transmissions for more than 30 years). "Local mechanic found" (told me I needed new wires. repair the circuit if you have a blown fuse, before proceeding any further. the fault injection warning is basically and engine management warning message - this usually means your cars ecu has picked up on fault somewhere on the engine itself wether it be a sensor giving out or becoming faulty or wiring to these / a fuel injection system problem usually one of the injectors,intake system problem / or a glow plug. After that it continued to do it multiple times on city streets and interstates. When your fuel rail pressure sensor goes bad, the “Check Engine” warning light may illuminate on your dashboard. Excessive cranking pressure can lead to difficult starting problems. Kawasaki Vulcan 1500 Classic FI. Is fuel getting to the injection pump? This is easy to check. I pulled the injectors out to verify. Check engine light came on car is running fine ,went to the shop they told me it was air fuel ratio sensor,got it replaced 2 days later light comes on again. You either have a clogged injector/other fuel problem OR a serious ignition problem. What is a ‘Malfunction Indicator Light” (MIL)? The Malfunction Indicator Light is commonly referred to as the check engine or service engine light. Exactly the same issue i am having now. :screwy:Who did the fuel pump job. The longer you wait to clean up spots the harder it will be later down the line to get them off. If the lights don't come on at all; check for 12volts in the "C" Plug (Actuator harness. Remove stains ASAP on fiberglass and upholstery. Have used other fuel injection cleaners in the past with no problem. Every vehicle has a fuel filter, whether it uses gasoline or diesel as fuel. You are here: Check Engine Light Home > Check Engine Light Codes (Generic Powertrain) Check Engine Light Codes. It just ain't true. One to lubricate the engine components and the other to operate the fuel injectors. This goes on and on, and this cycle is what makes the engine run and your car to move. The check engine or service engine soon lights are officially known as malfunction indicator lamps, or MILs. As soon as I started the car I noticed the Check Engine light was on and a tapping noise was coming from under the hood. Dirty wiring. There are times when testing fuel injector's makes a lot of sense. This page discusses how to do it. 8 Fuel Injection Fault Codes. With this advanced technology, developed over several years, hydrogens is pulsed through the air intake pipes, can burn off up to 75% of the carbon deposits that prevent your engine from running smoothly. Reading the codes in your MINI Cooper is a most often the fastest way to find fix most any issue the car might have Check with the experts at Minimania com. An off-car fuel injector tester can do a more accurate job of testing fuel injectors. We recommend cleaning fuel injectors at least every 36 months or 45,000 miles. The injector is supplied with pressurized fuel from the fuel pump. Learn how to determine whether your car has a loose gas cap—or a serious engine problem. But after just 9 miles, the check engine light has started flashing and give 2 long, 3 short flashes which I assume is honda-speak for code 23. Over time, residue can build up in the fuel system, and enough gunk, grime and grease can clog up the entire fuel injector pump. One area that often gets overlooked when putting in a new fuel pump is cleaning the gas tank. Optimizers™ reverse-flush the injectors, providing added cleaning. This is the one before the cat on right side 4. Note, the light had never come on before. Our technicians tell us that this problem can be caused by some fuel additives. They do this for millions of cycles. The fuel pump feeds fuel to the engine at a reliable rate; without this pump, your fuel would just sit in your tank, useless and inert. If your engine had a lot of gunk on the intake portion of your engine, then this burning off can trig. If the injector connector tubes, where they seat into the injectors, leak or the check ball in the injector is leaking or the high pressure limit valve. The injectors have a hollow check ball that holds rail pressure until the fuel solenoid is actuated by the ECM, this allows the check ball to rise off its' seat and an injection to take place. If the engine is running and stalls or stops for any reason with the key on, the MIL will be lit and no Continuous Memory codes will be set. But it is accompanied by a host of ghosts that plague a customer’s car and wallet. When engine runs smoothly you have successfully bled the fuel system. I've only used Shell or Exxon gas the entire time I've had my car and Ive replaced the air filters about every 20,000-25,000 miles. It is not that uncommon for the "check engine" light to serve as notice that a part needs attention. Check Engine Light comes on Another symptom of a potential issue with a fuel injector is an illuminated Check Engine Light. A modern fuel injection system technically includes some sort of a sensing mechanism to determine the correct amounts of fuel that need to be sprayed into the engine's intake manifold. The idiot lights in the dash will come on, and some may go out after a few moments. Every vehicle has a fuel filter, whether it uses gasoline or diesel as fuel. According to my smog check guy, John, YES. BMW recommendation for high pressure engine steam cleaning Combustion chamber cleaning Fuel filter replacment ('01 750iL) Fuel injector cleaning, DIY benchtop system Fuel tank rust treatment products Gummi-Pflege rubber seal maintenance Long term storage recommendations MAF cleaning Making Sense of Synthetic Lubricants (PDF). When the flow of air enters the fuel injection system of the engine, the mass air flow sensor will analyze how much air is flowing in there. contain a minimum amount of deposit-control additives to prevent a dangerous buildup in car systems. I've got a 57 plate Accord Tourer CTDI 2. This is a guide on how to change or clean the MAF (Mass Air Flow) sensor on Opel/Vauxhall Vivaro, Renault Trafic and Nissan Primastar Vans. We also review the Measuring Value Blocks (MVB's) for other parameters of your fuel system to see if there are signs of other problems, such as a fuel filter clogging or the engine running too rich or too lean. This was the first time that light ever came on since purchase. With low fuel pressure to the injection pump, the engine will ‘starve’ for fuel. So they did that and within 5 days the check engine light came on. Replaced injection pump and removed old OEM filter type for a spin on fuel filter. i run into this daily when performing induction/throttle service on Fords. The VP-SEF container was designed with an enclosure that will properly seal and allow no venting. But after all these years, "Check Engine" lights remain a mystery to many technicians and automotive do-it-yourselfers. To find the cause of the lean condition I went back into the scanners data stream and observed the fuel injector on/off time called “Fuel Trim” and noticed an abnormal injector on time. For a gasoline engine, fuel pressure is usually on the order of 35-50 psi. If any of the fuel injectors become clogged and cause a misfire, or experience an electrical issue the computer will set off the Check Engine Light to alert the driver of the issue. If you’re attentive, you can catch the symptoms of a failing fuel pump and have it repaired or replaced before it leaves you stranded on the side of the road. Fuel injectors disperse fuel into your vehicle’s engine at a precise angle and quantity, to ensure optimal performance. To put out the light: Insure the gas cap is tight (turn clockwise until it clicks). Use a torch rather than an inspection lamp, which could start a fire if the bulb is accidentally broken. Hi guys, I just posted last week that my check engine light was on and the dealer wanted to replace fuel injectors. When the Light Comes On. The FPR holds pressure at one end of the fuel rail and the fuel pump non return valve the other. If the lights don't come on at all; check for 12volts in the "C" Plug (Actuator harness. Our technicians tell us that this problem can be caused by some fuel additives. We’re called Cost Effective Maintenance because we’re dedicated to providing YOU with the most cost effective solutions to YOUR engine problems. I had this problem with the EPC light and the check engine aswell and a I found here in Google was about the throttle body and expensive stuff , so I took my car to autozone and for a 2nd opinion to O'Reillys to check my engine light…. OBD-II Diagnostic Trouble Codes (DTC). 000 to 120 000 miles) Faulty injector pump; Dirty air cleaner; Turbocharger or intercooler faulty. I have a 2004 Prius with 130k. Our technicians tell us that this problem can be caused by some fuel additives. How the fuel injector works. Replaced injection pump and removed old OEM filter type for a spin on fuel filter. does the check engine light come on with. The fuel injectors spray an exact amount of fuel into the cylinder to maintain a balanced air/fuel mixture. You guys ever get a check engine light while using cleaners in your gas?I just put in 6 ozs of Lucas in 30 gallons of fuel and about 1/3 way before empty, my CEL came on. Technology is on its way to helping us figure out what's gone wrong when the check engine light comes on. Next lets sit in the driver's seat. After I had it worked on it ran like a gem till about a month ago when the light came on and started blinking, then shortly after it started running rough. While my car was being serviced they called me and recommended a fuel injection and combustion chamber cleaning because they found carbon buildup in the throttle body (when they scanned it they got a code for a misfire). And its consuming plenty fuel. This Definitely sounds like it needs to be a re-call from Ford. It could be anything from a faulty voltage regulator, a faulty O2 sensor & several other potential problems. Check for loose injector end clamp hold-down bolts by verifying proper torque per Workshop Manual Section 303-04D. I pulled the injectors out to verify. Even the most common reasons can have many possible causes. My Kia Soul just had a check engine light come on. It ran fine for the first hour, then after an oil change, the check engine light came on and it began the typical missing and hesitating associated with the O2 sensor. One to lubricate the engine components and the other to operate the fuel injectors. Many people think such a precise device needs cleaning and maintenance. The 2000 Toyota Corolla has 10 problems reported for check engine light is on. That being said, dirty fuel injectors are also a major contributor to poor gas mileage. There are plenty of people that think fuel injector cleaners are a waste of time and they do nothing for the health of the cars fuel system. If you see that ‘Check Engine’ warning light turn on or blink, don’t ignore it. Cleaning Fuel Injectors After your car's engine is shut down, gasoline vapor deposits left in the fuel injector can form a hard varnish. Since that time, every new car sold in the United States has required a "Check Engine" light, mainly to be compliant with Environmental Protection Agency regulations. Check engine light on, engine running rough. You can check this on any gas Fuel Injector engine at each cylinder provided the engine has one Fuel Injector per Cylinder. A clean fuel tank can also ensure maximum engine performance and fuel. Check it Out Fuel Injector Cleaner Buying Guide. So I did I thought the problem was over. When you turn the ignition key on, the "STOP" and "CHECK" engine lights should come on, then cycle off after a couple seconds. A good kit (like this OTC set) will include various adapters to allow you to work on most fuel injected vehicles. The check engine or service engine soon lights are officially known as malfunction indicator lamps, or MILs. A bad fuel injector can cause too much or not enough fuel to be delivered into the engine - this will cause the Check Engine light on the car to turn on, indicating an issue. Fouled fuel found in a vehicle tank can usually be linked to a few suspects — it either came from the refinery, the distributor or the filling station down the street from your customer. Thanks for the help on this. I put some in there this afternoon. Whether you're looking for a diesel additive, fuel injector, adBlue, engine cleaner or engine flush, we can help you out. In this article we'll address fuel injector problems on Vortec V-6 powered cars and trucks. Reason #3: The Fuel Injector is Clogged. As the name suggests, it is the fuel filter which cleans the fuel before it makes its way into the engine. Much of this info came from Jim Conforti at Gateway Tech, 1995 and 1996. I am talking it back to the dealer, in a couple of days. He saw the engine light plugged in and confirmed this may be remedied by that treatment. The MIL will light as a bulb check if the key is on and the engine is not running. We follow the sun from Florida to California while testing Kawasaki's fuel-injected Vulcan 1500 Classic. Code was 11bd00. Both of these complaints are generally caused by a problem with cold start enrichment. Remove stains ASAP on fiberglass and upholstery. can any one give me some advise on these problems. The Engine Control Unit (ECU) dictates when the injector should inject fuel into the engine cylinder. After reading things on here it makes me wonder why am i paying $57,000 for a car that has this many issues. I have a 2011 800XP that has been giving me a check engine light periodicallyfirst time: I was driving through some deep puddles so water was splashing up around engine, etc. And the check engine light came on within 100 miles. Old or mismanaged gas stations can sometimes get too much water condensation inside their fuel reserve tanks, this fuel is then pumped into your vehicle and in some cases will cause a check engine light to come on and perhaps cause misfires and damage to the catalytic converter from too many contaminants in the fuel or too much water. A fuel injector can regulate fuel flow within milliseconds. This situation can also turn on your check engine light, with a lean-mixture trouble code triggered in the engine computer. The 2000 Toyota Corolla has 10 problems reported for check engine light is on.  For the best results, opt for a cleaning. My 2003 V6 Ranger was misfiring and after about 5 miles the Check Engine light blinked a little then stayed on. Any Ideas or suggestions. When it comes to diesel fuel injection repair and maintenance, reputation comes first. Your check engine light comes on. I told them to try again, and do a better job) then found bad ignition coil assembly. The check engine light turned on in my car, I took it into Autozone to do a diagnostic. I have a 2004 Prius with 130k. Clamp each fuel line in turn after you stop the engine and leave for an 30-60 minutes. For those suffering from a check engine light and want a powerful solution to fix it, the BG fuel injector cleaner is ideal. These DTCs give information pertaining to the issue. To check the fuel injectors: First, unbolt the fuel rails and disconnect the fuel injectors. If this precision is thrown off by restrictions, electrical problems or fuel problems, it can cause driveability issues. This article explains the core functions of the ECM. Car will run, but with a check engine light. I needed an oil change and I've been driving my car lots of miles for work recently so I decided to have the dealership do a fuel induction cleaning as thats the only service I haven't had done yet. This is checking the signal from the Computer to the Fuel Injector. The check engine light means something has happened to the performance of the engine to affect emissions. Excess fuel function not working. Also put a bottle of Fuel injector. Now remove the other 4 injectors. This week the light came on again, took it to the dealer and they stated injectors 1 and 3 had a bad code and suggested replacement. Took it up to autozone, and one of the guys pulled the codes. If you suspect that your fuel injector is going bad, or your Ford Ranger check engine light is on, this guide can help. Dead Fuel Injector: A dead fuel injector is an injector that does not have resistance and does not respond to electrical input. I had an engine misfire code in my 3800 engine that turned out to be a bad injector. This is the website for EricTheCarGuy! Here you will find answers to your automotive problems. Rough idling, starting issues, or increased fuel consumption may signal a bad injector. If the red light is on after 10-15 seconds of running, or the amber light comes on- SHUT OFF IMEDIATELY. There are many reasons why the. I recently installed a new Chevy 5. Power derate will begin 30 seconds after the initial warning. If you are towing a trailer or a heavy load and the light comes on, you may be overloading the engine. When you turn the ignition key on, the "STOP" and "CHECK" engine lights should come on, then cycle off after a couple seconds. Q: A year ago, my car started making sputtering noises when I accelerated from an idle. Oxygen Sensors, otherwise referred to as O2 Sensors, and their related check engine light codes, can be troublesome at the very best! Today we discuss the design and function of these sensors, and some of the pitfalls encountered during the diagnosis of their related fault codes. Several signs that your Oxygen Sensor needs to be replaced: - If the engine check light turns on while the vehicle is being driven. If you do not tighten your gas cap sufficiently, the Check Engine light may come on. Today I’ll be showing you how to test the Ranger fuel injector in a 1997 Ford truck. The fuel injectors can become clogged with dirt and oil, which means the gas isn't getting to the engine properly. The Hole 4 shooter read 0. Unlike other diesel engines the Powerstroke has two oil pumps. I had a fuel system cleaning performed on my car (2005 Kia Rio, ~54k miles). The car was sold last summer and the light never once came back. There is an injector problem if the pressure at the fuel rail differs between different injectors. Determining exactly which injector is cracked can be a lengthy process. Dirty fuel or restricted fuel filter or vent. We took it in immediately and mechanic said we need a full fuel system cleaning. To determine if your fuel pump has debris inside and needs cleaning, you’ll need to remove it from the golf cart and disassemble. p0251 will throw a "Check Engine" light. If there are external fuel injector leaks, the entire fuel injector body must be replaced. Most items are fairly minor such as a disconnected or out of spec sensor. The computer automatically adjusts its injector pulse to help regulate the amount of fuel that gets sent to the engine. I set my initial timing to 0 degrees as per the Chilten manual. Bad fuel pressure regulator. injector leak testing, injector spray pattern analysis, and ultrasonic cleaning of fuel injectors for almost every engine manufactured. Most cars still have about 5 litres gas in the tank, when the fuel light comes on. Some fuel companies use a small amount of it already in the fuel like Shell for example but it can cost a little bit more. When the engine computer detects that the air fuel ratio sensor signal is out of expected range it illuminates the check engine light. Use a torch rather than an inspection lamp, which could start a fire if the bulb is accidentally broken. Many people think such a precise device needs cleaning and maintenance. Older 2 Stroke Outboards have been running just fine on pre-mixed fuel and oil since the Outboard was invented. Stopped at local auto parts store and used their scanner to pull the code p0171 (lean, bank 2). A bad fuel injector in your vehicle can cause your engine to idle roughly, can increase fuel consumption, and can lead to other performance problems. The engine may run rough or idle poorly right after ECU reset. Placed vehicle in park, turned off engine, and restarted without further incident, except of the abs light continuing to light periodically. Check the filters and vents for any dust, grass, small rocks or wood chips that may have lodged in these often overlooked but important parts. I have a 2011 800XP that has been giving me a check engine light periodicallyfirst time: I was driving through some deep puddles so water was splashing up around engine, etc. As the name suggests, it is the fuel filter which cleans the fuel before it makes its way into the engine. At the same time though keep a constant check on your oil level. These computer codes tell which sensor has an "out of specs" reading. Thanks for the help on this. I recently decided to clean my fuel injectors in my s14 with Lucas after hearing reviews that it was pretty good. I pulled the codes and it was for two NOx sensors. 4 Powerstroke engine is a common rail type fuel system. In most cars, a timing chain tensioner is controlled by oil pressure. Couple things I learned from my "low idle/CE light" problem My e30 started to have some problems - if I let it idle for more than a few minutes the idle would drop and the "Check Engine" light would come on. It improved a bit, but not good enough. I’ve replace 2 of them. Before you decide what to do we strongly suggest you first read this article on the various fuel injector cleaning methods. I disconnected the battery and reconnect after 10secs which cleared the check engine light but it came back on. Read honest and unbiased product reviews from our users. Most fuel injector cleaning products have the potential to make inaccurate sensors go off - such as the O2 sensor. In addition to causing your check engine light to turn on, a bad O2 sensor will have a negative impact on fuel economy, spark plugs or your catalytic converter. The ECU now has default numbers in its trim memory - it has to adjust them to match the tune of your engine and its sensors and actuators. Why these codes? Well, these are the most common codes.