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Check Engine Light
The check engine light comes on in a car when the engine is experiencing a problem. Ask questions here about your car's check engine light.
7,238 Questions
I also have a 1997 Monte Carlo LS 3.1 and I've had the same problem. It was the alternator.
Why would a 1998 GMC Jimmy engine light come on?
I don't know. but for my VW, the service rep said that it is a reminder for routine engine maintenance. if its flashing,,, then its a problem he said The short and sweet is that something is wrong. I'll cut and paste a reply to an Olds Silhouette driver who asked a similar question. Here goes, see ya at the bottom: The quick, dirty, and cheap answer is tighten your gas cap until it clicks at least 5 times. Within one or two days the vacuum in the gas tank will build up and reset the code. The not so cheap answer is take it to a dealer with a blank check, he'll tighten your gas cap and charge you $150. Or you can buy an OBDII Code reader or better yet a decoder that hooks to your car's computer and reads out your engine diagnostics real time. OBDII stands for OnBoard Diagnostics level 2 and replaced the older OBD1 around 1996. It tracks hundreds of items such as ignition timing, fuel trim and pressure, the number of times your Oxygen Sensor transitions from rich to lean(I got that one)and a list longer than your arm, including loose gas caps. It's a phenominal system which can even tell the police how fast you were going and if you applied the breaks before you plowed through the front window of that car dealership you love so well. The real problem with this system is that there is no way for it to tell you whats on its mind without an expensive interface that the dealer has. Until now that is. Take a look at http://www.scantool.net/, they sell a low cost OBDII decoder which will read the codes, reset the MIL(Check Engine Soon) Light, and give you data to help you determine what's wrong (loose gas cap?). It runs on an older PC or Laptop which allows you to get on the fly readings(you read, someone else drives). It's well worth the $100, get together with your family and friends everybody chip in 20 bucks and an old laptop(386 is OK)and your the hit of the neighborhood. Only trouble is that each scantool does only one type of OBDII output. Ford, GM, and Chrysler/foreign cars are all different. There are other decoders that handle all three systems but their more expensive. Do the cost/benifit analysis to see if you want a single or universal system and how much the share will be. Do a Google search on ODBII, and pick the reader you want. Hope it was just the gas cap. 94 Get smart, get even and, even if you don't want to do the work yourself be informed. A few years ago I paid over $900 to have a mechanic tell me "Welp, I just don't know". I got mad, went on the internet and found the information on the Central Port Injector problems that Jimmy's had and fixed it myself in a couple days. Whenever possible I buy the parts and take them to the mechanic. The parts store will charge you a half to a third of what the mechanic will charge and all you have to cover is the labor. If you have the time check out www.Rockauto.com, they have the best prices on parts for cars from Acura to Yugo and several I've never heard of, ever heard of a Lada Samara. If you have the time for shipping you can get the great prices on quality parts. Hope this explanation helped, see ya 94
Answer:
I have the same problem with my 98 jimmy. Apparently there is a problem with the poppet valve in the fuel injectors. there's a tsb out, and actually a recall in california. the solution is to COMPLETLY redo the injector system about 1200$ is the estimate I received. however, i located which cylinder was misfiring and replaced the fuel injector (70$) seemed to fix it.
Answer:
When the Engine light started coming on last year in my 98 Jimmy I checked the manual and it says the gas cap is not on properly. I took it off and put it back on and after driving for a minute the light went out. So far this has happened to me 3 times. Well worth checking that before starting any work on it.
After replacing the sensor how does it take the car computer to reset?
Remove the negative power line to the battery. Wait a few seconds and replace. That will reset the check engine light. darksidesteve
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What does check engine cod P0456 mean?
[PDF]
SUBJECT: DTC P0456 - Evaporative System Small Leak Due To Loose ...File Format: PDF/Adobe Acrobat - Quick ViewNov 14, 2007 ... This bulletin involves performing the diagnostic procedure for DTC P0456, and if necessary, the replacement of evaporative system components ...
www.xkjeeps.com/tsb/tsb_xk_2500307.pdf
Your check engine suddenly came on while driving?
There is a problem with the emissions system. Check for a loose gas cap. If that is not the problem, seek out the services of a professional.
What does a check engine light on a 1999 VW Passat mean?
There are pages and pages of things that can cause a check engine light. You need to have it checked with a scantool. Then the code can be diagnosed and repaired.
What would cause a Chevy Cavalier ETS check engine light to come on and the vehicle to run bad?
You need to have the computer scanned to find the reason why the engine light is on. Some large auto parts stores do this for free Normally the ETS check engine light has nothing to do with the engine running bad. The ETS is part of the traction system in the car. Depending on the age of the vehicle, you might want to disconnect the negative battery cable on the vehicle for a few minutes, and then hook back up. In older vehicles, it will reset the computer and the light should go off. It does this in a 1996 model. Worth a try.. ETS stands for Enhanced Traction System, and has nothing to do with emissions or cooling. But the computer will almost always de-activate the ETS when a problem is detected, and thus turn on the light. This is normal on the Cavalier. The Check Engine light does mean the emissions system has a problem. Have the computer scanned for the codes by someone who is able to interpret the codes and not just throw parts at the problem. This takes skill and knowledge, so take it to a professional, and don't waste money guessing.
How do you read the code when the check engine light of a 1996 Mercury Marquis has come on?
Go to auto zone and they will do it free.
The new ODB II system found on '96 and newer vehicles prevents you from reading the computer without the proper tool.
Advance Auto Parts will read the codes for free, other car parts places may also - of course in the hope you can buy an item there to fix it.
And the check and the part are cheaper than the dealership.
Here are a few. No/low voltage to spark plugs. O2 sensor malfunction. Malfunctioning CPU. Steve J. Mine was just a gas cap that was not screwed on correctly
Check engine light is on your 1994 Mercedes Benz c220 how to remove check engine light?
Dont be stupid! If the light is on, something is wrong, go get the codes read, find out what needs to be fixed and fix it or get it fixed. DO NOT REMOVE THE LIGHT BULB. Most any auto parts store will check the codes for you for FREE!!!!!
Most auto parts store won't check the codes on this specific year Mercedes because it doesn't fall into OBD-II coding. The diagnosis code reader most parts stores carry will only read 95 and up vehicles, not to mention extra software and/or adapters are generally required to access codes on Mercedes. So, unless you want to spend the money at a qualified mechanic or dealer or track down the expensive reader for yourself, you are out of luck. Time for some old-school investigative mechanic work.
Flashing check engine light 2002 F150 4.6?
If the check engine light is flashing that means an engine cylinder misfire has been
detected
What should you check if the ABS light stays on in your 99 Daewoo Leganza?
IF the ABS light is on there has been a malfunction with the anti-lock brakes. Only the dealer or an authorized repair center will be equiped with the proper tools to check that light and the components in the anti-lock system.
How do you reset the check engine light on a 2002 Jeep Cherokee Laredo?
The check engine light is reset with a scan tool after repairing the failure. Unhooking the battery may turn it off temporarily, but it will return if not repaired.
P0139 02 Sensor Circuit Slow Response (Bank 1 Sensor 2)
P0139 02 Sensor Circuit Slow Response (Bank 1 Sensor 2)
What causes the number 5 cylinder to misfire on a 2000 S430 Mercedes Benz?
Misfire
Answer
Faulty: spark plug, spark plug wire, ignition coil, ignition module, fuel injector are the most common. Coolant leaking into a cylinder is another.
Internal engine problems such as burnt valve, broken valve spring, bent push rod, worn rings
Answer
this could be anything to do with the cylinder on your car. The plug, the wire, the cap, or the coil (whichever you have.) your best bet is to do a tune up on thecar and do all the plugs, wires, cap, and rotor. if you have a coil pack, try to change those. this is all i can say for now. if that doesn't work, ask the question again and give a little more detail on how the car is acting.
Technically speaking, cylinders do not "misfire": the spark plug causes a spark which causes the fuel to ignite which moves the cylinder, so it is the spark plug that may misfire. Given that, motor vehicle spark plugs may misfire due to any of a number of reasons, including watered-down or low-grade fuel, old and/or dirty oil, fouled spark plugs, clogged cylinders, insufficient oxygen to the plugs, poorly aligned cylinders, et al.
Can you get a smog check with service soon light on?
No that has to be fixed first it's an auto fail and you can't just reset it. you have to have 100 miles on it without it coming back on then take it in for it to pass.
Check engine light blinks on 2000 ford f150 4.6 v8?
If the check engine light is blinking with the engine running , a spark plug misfire has been detected - get it scanned for trouble codes in order to diagnose and then repair the problem as soon as possible . If you don't , and continue driving with the check engine light blinking , you risk damaging your catalytic converter
Would a faulty gas cap cause check engine light to come on?
yes if the gas cap wasn't on properly then the change in pressure would set off a sensor.
put the cap on right or replace it and if the check engine goes away after a few days that was your problem
