Vacuum leak,(to check vacuum lines just disconnect them one at a time at the throttle body and put your finger on the vacuum port on the throttle body and see if the idle corrects) Leaking EGR valve (but that model year dont have one) air filter clogged, Fuel pump not pushing the correct pressure (key on,engine not running 41-47psi...engine idling w/regulator vac. hose connected 31-44psi...vac. hose disconnected 42-50psi), Leaking head gasket, camshaft worn, and also the Idle Air Control Valve(on the very front of the throtle body) remove and clean any carbon/dirt off the pintel and pintel seat. But my guess would be the fuel pressure is low
Low fuel pressure
have you checked your fuses?
i would like to remove the backseat from my 1992 chevy cavalier
Bad heater core.
Dead battery
Blown Head Gasket or Bad Cylinder Head
You need to check all of the mounts. Get a manual to show you where they are.
The trans is electronically shifted so the sensor being bad is a likely cause.
you most likely need an alignment or your tires just need to be balanced
The whining noise in our 2001 2.2 cavalier turned out to be the a/c compressor. It ended up going out at about 120,000 miles. I would suggest having it serviced. I wish we would have had ours serviced.
The third generation of Chevy Cavaliers was from 1995-2005. So, you would think they would be compatible. However, Chevy gave the Cavalier a face lift in 2000. You can see more pictures and find more information here: http://en.wikipedia.org/wiki/Chevrolet_Cavalier
TRY CHECKING TO SEE IF YOU HAVE A HIGH BEAM HEADLIGHT OUT. tHIS WILL CAUSE THE PROBLEM YOU HAVE.