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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

How do you reset service engine light in a 2001 gmc savana van?

Turn the ignition key to the on position (do not start the van) and immediately step the gas pedal to the floor 5 X within 5 seconds. Repeat if it does not reset.

to check if reset key off and start van lamp should go out within a few seconds..

D. Peterson

Auto tech 30 years

Master ASE

Will the check engine light come on if the transmission fluid is low and or is the light related to the transmission as a secondary issue?

The check engine light can come on for a variety of reasons including transmission problems. It is best to have the code checked to see why the light is on. Many auto parts stores will check the code for free.

Why would your overdrive light be blinking and check engine light be on in a 1992 Suzuki sidekick?

the below is faulty;#2 answer 1:

AZ can not scan any suzuki below 1996 period.

only factory scan tools can do that. $4000 tool + but the OD light means the transmission computer has stored error codes. this puter is called a TCM for the 4speed electronic automatic tranny. http://www.kick-fix.com/Blink.html

this car has 3 ways to blink lights. ECU TCM and brake RWAL controller.

each one has a jumper connection and the manuals in stores do not cover them all. my link shows how to do all of them.

The check engine lamp, just jumper the DLC connector diagnostic request pins. it will blink out an error. (the ECU talks to the tranny TCM) and can set the ECU DTC for the tranny too. DTC = diagnostic trouble code. all you need is a paper clip for a tool , nothing else.

answer 2 (old)

A blinking overdrive light and the check engine light on most likely indicate the transmission range sensor (TRS). For detailed info, have the vehicle scanned at a local auto parts store (AutoZone, etc,) that offers free scans. If you want to retrieve the codes yourself, go to your local public library and check out a repair manusl (Haynes or Chilton) for your vehicle. Detailed instructions on how to retrieve the trouble codes and what each code means are in chapter six.

How do reset the service clock on Mercedes vito?

if the vito is upto 2003, you have two butons below the speedometer press the one on the left and switch the ignition on keeping it depressed for ten seconds or until you get a beep . JOB DONE

What would keep 2003 TC mini van from starting - light come on but not turning over?

not turning on could be flat battery, bad igniton switch, bad safety switch, bad starter motor,bad stater solenoid

Can the camshaft position cause your vehicle not to fire if code reads malfunction?

Yes, the camshaft position is critical for both compression and ignition reference. That is valve timing. But there is no code to tell you your valve timing is off. There is a Camshaft Position Sensor, check for voltage at the connector, broken wiring or corrosion and then ohm out or replace the sensor. Get e repair manual and learn about your car, you'll save money, I promise...

What would cause your engine light to come on besides your gas cap being loose?

possibly air in the gas tank. this happens sometimes if you keep pumping a little at a time, trying to get to an exact amount. It could also be water in the gas tank. this happens in cold weather sometimes. you can buy a bottle of drygas or something similar at a gas station. it only costs a few bucks and gets the water out. it could also be some kind of debris in the gas tank.

Check engine light came on suddenly and when you accelerate it starts running bad kinda shaky like theres a problem with a sensor can anyone offer advice as to what the problem could be?

It can be a myriad of things. Drive the car to a trusted mechanic and have them scan the ECU with an OBD2 scan tool. The tool will retrieve the code that has been set. This code will tell you what parts are being effected and a possible repair.

Seat Arosa Oil light flashing on and off?

Have you checked you oil levels? it could just be it is a little low and as the sump is not baffled all the oil will be swirling from side to side especially when going around a corner!

Check engine light Malibu means?

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.

91 Plymouth voyager the check gauges light is on and none of the gauges work?

i had the exact same problem with our 91 voyager, i cleaned the battery terminals and the problem went away immediately

Can you fix your car misfire by cleaning your car mass air flow meter?

Misfire is caused when a cylinder doesn't ignite its fuel mixture. Suspect a bad plug, coil, or wire. This will not be caused by a mass airflow sensor, that can cause a rough idle or bad fuel economy, but will not cause an individual cylinder to misfire.

Driving with a continuous misfire condition will eventually destroy your catalytic converter. If your check engine light is flashing you are doing serious damage to your cat converter.

2001 Lincoln navigator cylinder misfire?

If check engine light is on, have a parts store read the code. It will tell you there is a random misfire and usually what cylinder is misfiring. Replace the coil pack for that cylinder and all will be well.