YACT: Symptoms of a stuck thermostat?

[Shockwave]

Ok, the Jag is havin some problems.
When driving the temp keeps climbing up to almost redline. If I run the heater I get no hot air out. All of a sudden the heater just dumps hot air and the te,mp drops to almost normal, then the heater starts blowin cold air and the temp climbs again. Repeat over and over.
I'm thinkin stuck thermostat.... Sound about right to anyone else? Car is a 97 Taurus if that matters.
Thanks!

 

[FoBoT]

is it a jag or a ford?

i am no car guy, but your analysis makes sense, head to AutoZone now!

 

[waylman]

Sounds to me like all of a sudden the heater just dumps hot air and the temp drops to almost normal, then the heater starts blowin cold air and the temp climbs again. Repeat over and over.

 

[Eli]

Yep, thermostat. It's getting stuck closed.

Replace it, they're like 15$. You don't want your engine getting that hot.

 

[Kalvin00]

Originally posted by: waylman
Sounds to me like all of a sudden the heater just dumps hot air and the temp drops to almost normal, then the heater starts blowin cold air and the temp climbs again. Repeat over and over.

........Yes, that's what he is saying........

 

[waylman]

Originally posted by: Kalvin00

Originally posted by: waylman
Sounds to me like all of a sudden the heater just dumps hot air and the temp drops to almost normal, then the heater starts blowin cold air and the temp climbs again. Repeat over and over.

........Yes, that's what he is saying........

lol, im just f'ing around.

 

[Soybomb]

the upper hose should be cool when its stuck closed too......be careful when grabbing it incase it isn't

 

[Shockwave]

Originally posted by: Eli
Yep, thermostat. It's getting stuck closed.

Replace it, they're like 15$. You don't want your engine getting that hot.

Yep, just makin sure. Had the same thing happen to another car quite some time back. Talk about a piss me off, changed the thermostat. That night, the car got stolen. OH I was mad
Anyways, its a Taurus, I just call it my Jag

 

[Prong]

A bad fan clutch can cause these problems, too. To check it, see if there's any oil leaking from the center "hub". Also, when the engine is cool, it should spin with a fair amount of resistance.