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Excessive coolant pressure + hot start issues
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Posted by Paul in NM [Email] (more from Paul in NM) on Tue, 13 Jul 2010 12:00:55 Share Post by Email
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I'm having a hot start issue which may or may not be related to a possible head gasket issue. First off I've noticed excessive pressure in the coolant tank, even after the car sits cold for a day or so. And a low coolant level warning in the morning when first starting, but when I unscrew the cap it comes back where it's supposed to be. Seems to me like head gasket even though I have no water in oil, oil in water or tail pipe.

Recently when the car is hot and I stop for a couple of hours it starts rather rough for a second, but then runs fine. Does not seem like CPS to me as my prior experience with that is that it cranks but does not start. This could be just a coincidence but when I release the pressure from the coolant it seems to start fine when hot. Ideas?

All vacuum hoses new. PCV #6 done. Temp senor and plugs new. MAF and throttle body cleaned awhile back.

02 Aero SW auto, 93K

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