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head gasket/tstat help

 
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Old 01-25-2010, 04:51 PM
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head gasket/tstat help

Ok so my temperature gauge after driving for over an hour occasionally starts to fluctuate. It will not stay up it will go back down to normal. I talked to a mechanic and he said its either the tstat or head gasket going.
Any opinions?
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Old 01-25-2010, 05:04 PM
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Re: head gasket/tstat help

Id try the thermostat first. they are pretty cheap, and easy to change. Change your oil, you will notice water/coolant in the oil if the head gasket is bad or notice white smoke/sweet smell from your exhaust. Could be a bad temp sensor maybe?
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Old 01-25-2010, 05:05 PM
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Re: head gasket/tstat help

alright thanks man i am going to maybe get a compression test first and then go from there i go for my license on tuesday the 2nd so i need it by then
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Old 01-25-2010, 06:37 PM
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Re: head gasket/tstat help

AND im noticing when my car is running i am slowly dripping coolant from the bolt or plastic screw where i drained it. Could this be from not having it all the way tightened or another reason?
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Old 01-25-2010, 06:45 PM
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Re: head gasket/tstat help

Interesting. If your head gasket is bad, it may be building pressure in your coolant system. Higher pressure = more heat. The extra pressure could be forcing the coolant out of there if its not tight or sealed properly. Im not sure. But if I were you id start with the thermostat and check oil/exhaust fumes. Then go from there. hope this help.
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Old 01-25-2010, 07:02 PM
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Re: head gasket/tstat help

thanks man it helped. I did leave my car run for 30 minutes today checked the temp gauge, perfectly normal. I revved it, no white smoke.
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Old 01-25-2010, 07:53 PM
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Re: head gasket/tstat help

Open ur radiator cap (make sure motor is cold) n if its milky inside then ur HG is blown. Also as built said it'll show in the oil too. As far as changin out the tstat its pretty easy n like a $20 part so it be worth it just to toss a new one on. Make sure u get the gasket to go w/it too. Best of luck
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High rpm+boom+oil light divided by knock x stupid street racing=new engine
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Old 01-25-2010, 07:58 PM
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Re: head gasket/tstat help

thanks man, I did check my oil, its clean and perfectly fine. I did purchase a new tstat, did not put it in yet and why a new gasket?
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Old 01-25-2010, 08:01 PM
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Re: head gasket/tstat help

The tstat assy has a gasket that goes around the round part of it. When u replace it the old one is usually stretched. The gasket is very cheap. No sense in needin to do it twice ya kno. Measure twice cut once type thing.
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Originally Posted by blaclabel1911 View Post

High rpm+boom+oil light divided by knock x stupid street racing=new engine
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Old 01-25-2010, 08:03 PM
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Re: head gasket/tstat help

ohh I got ya. So my most likely cause of this problem is the tstat and not the head gasket? I still do not know why I am dripping coolant
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Old 01-25-2010, 10:47 PM
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Re: head gasket/tstat help

Ya most likely thtll solve ur issue. As for the coolant check all ur lines good. And do it while the car is runnin. If there's a leak ull see it when thr system is pressurized. Happened to me in my 93 lol
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Quote:
Originally Posted by blaclabel1911 View Post

High rpm+boom+oil light divided by knock x stupid street racing=new engine
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Old 01-25-2010, 10:54 PM
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Re: head gasket/tstat help

Oh ok were you leaking coolant from like where the plug is under the car though?
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Old 01-25-2010, 11:08 PM
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Re: head gasket/tstat help

No I was leakin of a coolant line comin off the hood. It rushed me out bc the was coolant shootin out onta my CF hood n I couldn't figure out how it was gettin there. Checked for leaks in the hoses n didn't find any. Popped hood w/car runnin n it went from leakin to squirtin haha. Found it like that. Worth a shot ya kno
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DynoJet: 188whp/168tq
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External: VIS Carbon Fiber Hood, JUN eyelids, JDM Foggies
Interior: Customer suede interior, JTC wieghted shift knob, JTC short shifter, NRG qwik release hub, NRG Race Wheel

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Quote:
Originally Posted by blaclabel1911 View Post

High rpm+boom+oil light divided by knock x stupid street racing=new engine
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Old 01-26-2010, 06:20 PM
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Re: head gasket/tstat help

yeah I know lol. I think it is just that when I refilled my radiator, I did not tighten the bolt all the way underneath...hopefully thats it
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