Running hot - intake manifold?

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07-24-2006, 01:59 PM

diverguy64

Thread Starter

Join Date: Apr 2006

Posts: 30

Running hot - intake manifold?

My 96 GT has its original (crappy) intake manifold but it's never been a problem before to either me or its previous owners. All of a sudden the car's temperature is now running considerably hotter than normal. I can't see any coolant leaking anywhere. How can I tell if it's a cracked manifold? Is there a "tell tale" sign?

07-24-2006, 02:04 PM

rvoss5

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Join Date: Jul 2006

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Posts: 261

RE: Running hot - intake manifold?

Quote:

ORIGINAL: diverguy64

My 96 GT has its original (crappy) intake manifold but it's never been a problem before to either me or its previous owners. All of a sudden the car's temperature is now running considerably hotter than normal. I can't see any coolant leaking anywhere. How can I tell if it's a cracked manifold? Is there a "tell tale" sign?

need more info........have u checked your thermostat? waterpump? made sure the vehicle has had the radiator flushed every 36K? before you tear your manifold off, i would look at those things.

07-24-2006, 02:06 PM

Derf00

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Join Date: Feb 2005

Location: AZ

Posts: 13,090

RE: Running hot - intake manifold?

Quote:

are you losing coolant? Check the overflow tank. If it's running low, fill to spec, then run it again. If it loses some more, then you know you have a leak somewhere. If it remains fine then you probably have a stuck t-stat.

07-24-2006, 02:07 PM

blownstanger

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Join Date: Jul 2005

Location: Alice, TX

Posts: 373

RE: Running hot - intake manifold?

THAT CANT BE GOOD

07-25-2006, 01:25 PM

diverguy64

Thread Starter

Join Date: Apr 2006

Posts: 30

RE: Running hot - intake manifold?

Phew... no coolant missing. Seems to run fine now but flushed the cooling system and changed the thermostat anyway (must've been sticking after all).

Thanks for the advice all,

07-25-2006, 01:28 PM

wwmost

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Join Date: Mar 2005

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Posts: 3,534

RE: Running hot - intake manifold?

yea probly the t stat. isnt there one that if it fails it fail in the open position. i forget which one it is. but its smart soo you dont overheat your engine

07-25-2006, 01:29 PM

Derf00

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Join Date: Feb 2005

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RE: Running hot - intake manifold?

glad to help

07-25-2006, 01:38 PM

rvoss5

2nd Gear Member

Join Date: Jul 2006

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Posts: 261

RE: Running hot - intake manifold?

no problem. just make sure you keep the cooling system flushed. helps keep parts happy

07-25-2006, 01:39 PM

MustangChris04

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Join Date: May 2005

Location: NY

Posts: 2,518

RE: Running hot - intake manifold?

rev it up high and see if coolant spills out of it. My friend had 80k miles on his gt and it cracked, he couldnt rev over 2500 rpms without having coolant go everywhere.