Question about 2001 Chevrolet Cavalier
I need to find the egr valve one my 2001 cavy but i have been told that this car dose not have one is this true if so what would cause my car to run fine well idling but under load cause it to stall out and die when it is heated up i have replaced the cat the o2 sensors and the ect sensor. if it makes any difference it hase the 2.2l and it is a 5 speed tranny in it
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Posted on Jan 02, 2017
its just white cuz i too the cat off..
cuz i thought my proble could have been to do with the cat...
cuz i lost power driving up hills and on highways now it just will start the die right away
or start and idle really bad...
i was thinking crank sensor.. or injectors
Posted on Oct 01, 2008
have you tried checking the map sensor this can sometimes cause the engine to run oddly. also check for good spark check wires when its pitch black out check for wire arching. also check fuel pressure with a pressure guage.make sure cap and rotor are clean of deposits. keep searching and you will find the weak link.
Posted on Oct 08, 2009
See if there is a code in the computer and work from there. Find someone with an OBD2 code reader. If I'm not mistaken an OBD2 code reader works on 1996 and newer models. Could be a bad coil and you don't notice it when you first start it until it idles down, to check for that, while the engine is running, pull each wire off the spark plug, Each time you do that you should hear the engine struggle. Then pick back up once you plug it back to the spark plug. If you pull one and nothing happens to the engine, that could be all or part of the problem. Hope this helps.
Posted on Nov 24, 2009
A couple of things; you can't have any leaks in the exhaust system, in front of the cat, and you must have the correct mixture going into the engine. The cat must have at least .45% CO going into it in order to reduce NOx. Make sure you have the correct fuel pressure, good fuel filter, and the engine is not running too hot when you take the test. In fact you may want to try a cooler thermostat. The oxygen sensor is only a fuel trim device, the bulk of the systems fuel control is dictated by the MAF and MAP sensor if it has one. Bottom line; your engine is running too lean or there is air getting into the exhaust system before the cat. You may want to try another MAF sensor if you know the other factors are good. If you have access to a gas analyzer, drill a pre-cat hole and check pre-cat CO under load, at least .45% is critical.
Posted on Jul 20, 2010
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