answersLogoWhite

0


Best Answer

Hundreds of things could cause the check engine light to come on as with any car. To determine what the problem is you must use an OBD II code scanner. Autozone or some other diy parts stores will do this for you for free.

AnswerAlways check the Gas cap to make sure it on tight. A loose gas cap can cause this to happen. AnswerIt's either a faulty catayltic (sp) converter (We have a 2001 Impala and have had to have a new one installed twice), a faulty oxygen sensor or the gas cap (either not screwed on just right or, being 7 years old, the gas cap is not sealing correctly and you need a new cap. Good luck. AnswerOn my 2000 Impala, the Exhaust Gas Recirculation Valve has required replacement about every two years. This causes the check engine light to come on. A sure way to determine if the EGR is At Fault is to drive from a cold start, go for 10-15 minutes at 50MPH, and then coast to a stop. If the check engine light comes on during decelleration, the EGR is faulty - this is a GM test protocol for this vehicle. The EGR's function is to recirculate exhaust gases back into the engine for reburning, and if it is not working properly it can lead to poor fuel economy or failing emissions tests.

Answer

here is a really common problem and fix. start your car andOpen up your hood and take some carb cleaner and spray it on all the rubber hoses you see in your hood. Carb cleaner evaporates so dont worry about messing anything up, and if you here your engine idle up then you have a vacuum leak and this is a very common problem.

User Avatar

Wiki User

12y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: Why would the check engine light come on in a 2000 Chevy Impala?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

Why does my Check engine light stay on in my 2001 Chevy Impala?

Check engine is an error. You have to go at a garage to see what is the error code, then correct the problem.


Why would a check engine light on a 2002 Chevy impala come on?

You need to connect a OBD-II Scanner to find out.....


How do you check for check engine light codes on 1984 Chevrolet Impala?

It requires a scanner to properly diagnosis a check engine light.


How do you reset the check engine light on a 94 Chevy Impala ss?

Either try disconnecting thebattery for about 10 mins. or have vehicle scanned to determine the problem


How do you reset check engine light for the 2009 Chevy trail blazer?

How do you reset check engine light for the 2009 Chevy trail blazer?


Why don't my temperature gauge only work some times on 2001 Chevy impala?

Replace your thermostat had same problem it sets a code but no check engine light


What might cause a 2001 Chevy Impala 3.8L check engine light to stay on?

Several things could cause the 2001 Impalas check engine light to stay on. Since so many things could be wrong, check the computer codes for any leads on possible problems.


Reset check engine light on 2003 Chevy 2500hd duramax?

You can either bring it in to a Chevy dealer or use a programmer/tuner to reset the check engine light.


How do you reset engine light on 96 Chevy Impala?

Use an OBD scan tool to reset or disconnect the battery


What does service engine soon light mean on a 2000 Chevy Impala?

It means that the engine computer has detected a malfunction that will affect the emissions of the vehicle.


1997 Chevy venture check engine light blinks?

If the check engine light is blinking that means an engine cylinder misfire has been detected


What happend when oxygen sensor go bad on 1996 impala?

The check engine light will illuminate.