The starter on a 91 Chevy cav. is located at the lower front end of the engine.
You can get to it better by jacking the front of the car and attacking it from underneath.
I have a '91 Cavalier 2.2L My flasher is located behind the fuse box to the left of the steering column. The flasher is mounted against the firewall.
My 91 Cavalier (RS 2.2L) doesn't have one but my 95 does on the left side of the drivers seat.
if it is the same motor yes, but some may have different mounts or wiring plugs
yes
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Perhaps it was hit by a meteorite. Check for fuel and spark.
on the starter. Chevy has always put the starter solenoid on the starter. It is the cylinder on top of the starter that is about two inches inb diameter with all the wirs connected to it.
Bad heater core.
23 City 32 Highway 27 combined http://www.aboutautomobile.com/Fuel/1991/Chevrolet/Cavalier
fuel pressure reg throttle position or ASD relay
If we are talking about valve lifters, remove cylinder head and pushrods and lifters will be excessable.
Follow the positive battery cable from the battery down, the other end will be attached to the starter.