Question about 1994 Toyota Corolla

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Overheating when A/C on.

When I first got the car everything seemed fine. First it started overheating if you sat in one spot to long with the A/C on. I got the radiator flushed. Then almost right away it started again. Then it started overheating when the A/C was on period. Moving or not. So I stopped using the A/C. Then It would continue overheating no matter what. I replaced the radiator and it would still overheat if the car was running for more than an hour. One day it got hot. Steam started pouring out the hood of the car. I put some fluid in the radiator which wasn't dry. Let it cool down and within 15 minutes the car was right up to the red line on the thermo gauge. I pulled into a service station (gas station) and a guy checked everything and put more fluid in. I went to leave and the car cut off. He said I was leaking. He discovered a hose that had busted near the connection so he cut off the end and reconneced it. I could start the car but whenever I would put it in Drive it would cut off. I had to leave the car there. My husband went back for it and actually drove it home. He isn;t sure the problem either. It wants to seem like the spark plugs but I just had the car serviced. I mean not even a month. Someone at the service station said maybe it was my fan but that is new. Less than a year old. Help please.

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  • Master
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If the a/c is on then both fans should be running. If the fans are not running then have your mechanic check the fan relay. Each fan has its own relay. I would also have the thermostat changed. When the engine overheated it most likely damaged the old one. Give these a try and good luck.

Posted on Jun 04, 2009

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  • Toyota Master
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There are a lot of things that can cause overheating. The first and most common is the thermostat sticking. Next is your radiator fan. Your water pump. Restricted radiator air flow. Make sure the front of your car is not restricted in any way, and the fins of your rad isn't plugged with bugs, or dirt.

Posted on Jun 04, 2009

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