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2001 Other Chevrolet Models Symptoms of Overheating

Tiny
BEAVERTAIL
  • MEMBER
  • 2001 CHEVROLET
  • 4 CYL
  • 2WD
  • MANUAL
  • 78,620 MILES
My chevy 2001 sedan is showing symptoms of overheating. When I use the A/C the engine temperature goes up to the point of overheating. This only occurs when my A/C is turned on but when I turn it off it goes back to normal. The timing belt and the water pump had been change recently. The car has no leaks. The mechanic said it could be the thermostat, but I doubt it coz whenever the temp goes up the radiator fan turns on.

thank you for the recomendation
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Thursday, January 31st, 2008 AT 4:05 PM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Dunno the model-when AC is on-does both fan come on?

Radiator/Water pump/Thermostat are good-get it block and pressure tested see below

Have it block and pressure tested-do the block first to pinpoint a combustion leaking into the cooling system or a gas analyzer to sniff for hydrocarbons at the radiator fill neck.

Pressure test: do not do a pressure test if there's leakage at the headgasket this might cause coolant into the cylinders and lock it up or bend a connecting rod if cranked thereafter. The headgasket should be repaired before doing the pressure test.

If the block and pressure test passes check the following: Thermostat, Pressure test the Rad. Cap, Clogged radiator, Fan clutch, Radiator electrical fan, collaspe hoses, water pump.
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Thursday, January 31st, 2008 AT 4:14 PM
Tiny
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The model of the vehicle is a Chevrolet Cassia but I think in some countries it is Suzuki Esteem Sedan.

Both fans are working the the Rad fan turns on and off and is dependent on the engine temp while the exhaust fan is turned on while the A/C is in use.

Thanks a bunch for the reply I will try if those test will solve my problem.
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Thursday, January 31st, 2008 AT 10:12 PM

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