Have vehicle scanned to determine the problem - could be a plugged catalytic converter
There are many reasons for that check engine light. You could go to dealership. Or you could simply disconnect battery and reconnect after 3 minutes.
could be the oxygen sensor. that's what it was on mine.
check for engine codes- it could be that there is a bad o2 sensor or something.
It could be a # of things, You need to have the engine scaned with a engine scanner. Some parts stores will do that for free.
it could be a short or anti-pollution devices filters etc. check the vacuum on the charcoal cannister. 65;
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.
Check engine lights come on for several reasons. I own a 98 Monte and my check engine light comes on alot. It could be any thing from a un clipped sensor, fuse, oil needs changed or checked. Take it to Pep Boys or Autozone they check out your check engine light for free.
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.
Could be your fuel pump or your ignition. Check your fuel line and crank the engine. If fuel comes out, check the ignition.
Chevy it could be a 301 oldsmobile engine or a Chevy 289 and ford it would be a 302 boss engine
It could be a problem with the vacuum. If you have a meter you could put it on the engine at one of the larger hose locations and check that first. Are you sure that you have a Ford engine in a Chevy truck?
Could be a plugged fuel filter or damaged/plugged catalytic converter. If the check engine light is or has illuminated check for codes.