SOURCE: running hot
with engine off feel tge radiator and make sur it is uniform as far as how hot it is feel for cold spotor area thisindicates clogged radiator, if you can get an infa red temp gun even better
SOURCE: Chevy cavalier temp guage stopped working on instrument panel
if the wiring is good and there are no blown fuses, likely the gauge itself will have to be replaced
SOURCE: 99 cavalier overheats
I was just having the exact same problem with mine!! (my 1999 Chevrolet Cavalier)
It turned out that replacing all of the parts you mentioned, I just had an air bubble in my system and needed to run it with the cap off and fill it up with water as the engine ran and the air escaped.
Hope that helps you!
SOURCE: checking alternator on 99 chevy cavalier
Best way is to drive car to AutoZone or Sears, they will check it in the car free. The alternator does not need to be removed.
You can also use a multimeter ($5 ~ 50) also known as a "volt-ohm meter".
Start engine and be careful because the multimeter test leads can get caught in the spinning fan, fanbelt, pulleys, etc.
The safety factor may not be good enough for you to attempt.
Do not try to retrieve any test wire that falls or gets caught.
Procedure:
Engine OFF
Clamp the black (ground - negative) probe to the engine somewhere close to the alternator. Place the red test lead on the red alternator wire that is held onto the alternator with a nut. It may be covered-up by a red rubber boot.
Place multimeter (and test leads) in a safe position where you can read the multimeter display. You will start the engine, so make sure it will stay in place.
Start engine.
Read the meter. It should read 13.8 volts on the DC scale. A small fluctuation is normal. Turn OFF engine and disconnect meter.
There are further tests; however, this should have given you the result you need.
SOURCE: My 1998 Chevy Silverado has coolant leaking from
There's not usually a seal for these, the metal is commonly molded into the plastic sides of the radiator.. Remove the radiator tube and inspect the plastic around the fitting for cracks. If you find cracks in the plastic, then you know your answer. If it's leaking from around the radiator hose you could try replacing the clamp with a hose clamp that you can tighten with a screw driver.
My guess is the plastic is cracked there, and the radiator needs replaced, but you should inspect it first of course.
Good luck
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