Hmm, this sounds similar to what was going on with my old truck. The temp
would go way up (not to overheating, but it definitely made me nervous). I
had the thermo replaced, the water pump, and the fan clutch. Nothing
seemed to cure the problem.
According to the guys working on the truck, this is a symptom of head
gasket "lift". The head gasket delaminates slightly, leaving a gap where
air can get into the water passages. This builds up behind the thermo,
keeping it from opening until it gets really warm, then it slams open
allowing water to flow again.
At least this is what I was told.
The problem is that a sticking thermo will cause the same problem, I'd
start by having that replaced to see if it fixes the problem. If it
doesn't, it could very well be the head gaskets.
My solution? I bought my Dak. ;-)
on 3/9/01 2:26 PM, Steve Jenkins at slick@columbus.rr.com wrote:
> Will a blown head gasket cause a VERY INTERMITTANT overheating problem? Or
> would it be continual once it did overheat? When my engine does get hot, I
> can stomp on the gas, and the temp will go back to normal, and the heater
> will start putting out warm air again. I am only asking because I called
> Dodge, and that's what they said it sounded like. It seems like it only
> does it when I have driven and heated up, then stopping along with turning
> my truck off. A few hours later, the engine is still kinda warm, but it
> then overheats.
>
> I have an appointment at Dodge Tuesday. I hope they can figure it out.
>
> Steve Jenkins
> '99 V6 4X4
>
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