Overheating coolant bubbling over top of reservoir reaching 250-260 degrees

LAC92

MEMBER
1992 CADILLAC ELDORADO
62,000 MILES

Replaced thermostat car temperature ranges from 190-210 while driving, problem is when idle reaches about 230 and the fan does not engage. What could this be fan censor or fan? What is a normal temperature to drive?

Friday, May 3rd, 2013 AT 9:43 PM

3 Replies

CADIEMAN

MECHANIC
3,544 POSTS

Will the fans turn on if you turn the A/C on? The coolant temperature sensor in the intake may need to be replaced. Go to the dealer and find out if it has a standard module this may need to be changed. This is what controls the fan going off and on.

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Saturday, May 4th, 2013 AT 12:34 AM

LAC92

MEMBER
3 POSTS

Okay, here's what happened: I looked to see the placement of the relay and I actually realized that the cooling fan fuse was blown, so I went to the store to get a new one and I turned the car on and the fans where working. However, shortly after the fuse blew again. So I thought maybe If I got a stronger fuse just out of curiosity it might not blow but the same thing happened. I turned the car on the fan automatically worked with the new fuse but a couple seconds after the fuse blew. So my question now is, what could be making my fuse blow? Where could the shortage be? Is the temperature sensor what it could be still or is it something before the fuse?

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Monday, May 6th, 2013 AT 3:16 PM

CADIEMAN

MECHANIC
3,544 POSTS

Unplugged the motors and install a new fuse. Turn the key on what don't start the car. Make sure the AC is on. Plug motors back in when the fuse blows that is the bad fan motor.

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Monday, May 6th, 2013 AT 6:00 PM