LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Head Gasket?

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Old 08-21-2011, 12:34 PM
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Default Head Gasket?

I have a 93 z m6 117,000 miles. Its an overheater, and i have replaced everything minus the radiator within the cooling system with no results. Yes i bled the air out PROPERLY several times. New radiator cap, new thermo, no rad./coolant leaks, both fans are coming on, all plastics are in place underneath... The only thing i can think of is a headgasket. But theres no milky oil or any signs of a blown head gasket. Just overheating. Im ******* sick of this car and just want to sell it. Am i on the right track? How much would a head gasket cost to have replaced? Fixing it myself is not an option, i do not have the time, tools or knowledge. Thank you in advance
Old 08-21-2011, 01:31 PM
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Take it to a good radiator shop. they can test for combustion gasses in the cooling system and tell you if the head gaskets are bad. Don't just replace them because you THINK they are bad. Shotgun troubleshooting is not smart.....

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Old 08-21-2011, 01:58 PM
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If you have no coolant leaks then it's not a head gasket.
Old 08-21-2011, 02:32 PM
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what kind of temperatures are you seeing when its running? in traffic and on the highway?
Old 08-21-2011, 04:53 PM
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it will get to the red if i dont keep the car moving. i guess i should have a shop determine the problem then. im all out of ideas. again im not seeing any moisture under the car or the hood
Old 08-21-2011, 04:57 PM
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Stopped up radiator. That old Dexcool stuff was horrible.
Old 08-21-2011, 05:09 PM
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Originally Posted by IronOutlaw
Stopped up radiator. That old Dexcool stuff was horrible.
Is the new stuff any better? Talked to a few radiator shops about it and they say drain it out as soon as the warranty expires. Chrysler's HOAT is supposed to be a lot better. I use the regular Prestone.

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Old 08-21-2011, 05:13 PM
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I just googled and found:

http://donsnotes.com/home_garden/auto/antifreeze.html

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Old 08-22-2011, 11:44 AM
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Maybe, Il have the rad tested. Thanks
Old 08-22-2011, 12:02 PM
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if you put stop leak in the motor at one time or mixed the old orange crap with the old green crap you've created an adobe house somewhere in your cooling system.......stuff turns into monkey ****........flush it out............



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