1995 Ford Mustang Car overheating

Tiny
SCOTTHAWBAKER
  • MEMBER
  • 1995 FORD MUSTANG
  • 6 CYL
  • 2WD
  • MANUAL
  • 178,680 MILES
I have had the thermostat sticking for some time, with it having to go almost to hot before it would come down to normal and the heater would blow hot. Saturday night car was fine, Sunday night the car overheated and wouldn't cool down. I thought the thermostat had stuck again, and tapped where the thermostat would be with no luck. This morning, I again tapped on the thermostat and it went from hot down to normal, I drove it for an hour or so with it running @ normal temp. At the end of the day, I drove it again and had to stop a couple of times tapping the thermostat, finally it went to normal and was fine. Tonight, I replaced the thermostat, but the overheating is stil here. I did not try tapping. What else could cause this.
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Monday, February 11th, 2008 AT 6:36 PM

4 Replies

Tiny
MASTERTECHTIM
  • MEMBER
Head gasket?
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Monday, February 11th, 2008 AT 6:42 PM
Tiny
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I did leave out a couple of things. First, the temperature here in Iowa is about Zero to 5 degrees. It had run fine at -11 a few weeks ago. If the head gasket were bad, would it allow the car to run normally for extended periods of time? Once the temperature goes down to normal it stays there. Until yesterday, I had not had a heating problem with the exception of it having to go towards the hot side briefly before it went to normal and stayed there. Also, when the car gets hot, the top radiator hose is hot, the bottom is cold.
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Monday, February 11th, 2008 AT 6:49 PM
Tiny
MASTERTECHTIM
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Top hose hot and bottom cold is good. You might just have air in the system. Is the coolant level good in the radiator? You put in new thermostat, if there is no air in the system then it should work fine. The only thing I can think of is a head gasket creating the air in the system if you are sure you got all the air out. Make sure your radiator cap is good also that is the only other thing to check and replace. If your radiator cap wont hold pressure the coolant will flow back in to the over flow at 212 degrees, this could also cause your problem. If the system has a good rad cap 13-16 psi then it wont boil over until it reaches 255 degrees. Hope this will help.
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Monday, February 11th, 2008 AT 6:58 PM
Tiny
SCOTTHAWBAKER
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Thanks, the radiator cap has never been changed as long as I have had the car, and I have put nearly 90,000 miles on it, so it wouldn't hurt. I will try it tommorrow and see if it makes a difference. With my luck, probably not, but who knows.
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Monday, February 11th, 2008 AT 7:11 PM

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