cavalier running rough (Full Version)

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cavalier running rough

Jro -> cavalier running rough (10/1/2007 4:51:48 AM)
Hello everyone. I own a 96 Chevy cavalier Z24 2.4 Automatic transmission. I have been having some problems with it. First it used to turn off after i would go over 50mph. so i thought it was the fuel filter, i replaced it, it still did not work. so i replaced the fuel pump, still a no go. i removed the crankshaft position sensor and cleaned it off and put it back in, (i am currently station overseas so i have to wait a week or so for the new one). and ran fine for a while. now it runs really rough, the exhaust smells like gas, it feels like it's not getting enough power, it shifts hard, so i replaced the spark plugs, sparg plug wires, changed the oil, and air filter. I have tested the EGR valve and it is good, i've cleaned the EGR valve out and it still a no go. i have also ordered two new igniton coils. does anyone have any ideas that they can offer. thank you.

02blue1 -> RE: cavalier running rough (10/14/2007 12:16:58 AM)
do you have any codes (engine light on)? if you smell gas it's running too rich or possibly a vacuum leak. the O2 sensor controls how much gas. have it scanned for codes at autozone or advance auto. it is possible to have a bad O2 sensors with no engine light. i don't know much about cavalier but my wife has one. you sound like you're running rich which would affect your power. i don't know what other sensors are on a cavalier but i DO know that every car has an 02 sensor and is most likely the culprit! did you buy this car new or used? how long since changing any sensors? Just some thing to consider. does sound like some kind of sensor though. I'm not a pro though so don't go out and buy a new 02 sensor and expect it to fix the problem. Just some ideas for you to consider.

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