Random Overheating?

IHateHacks · 01-12-2007, 08:27 PM

I would try changing the thermostat.

Or you could install an aftermarket water temp gauge, (to see if its a gauge problem which I doubt) by removing the stock gauge sensor (in that pic), and installing the aftermarket sensor in its place.

Have you tried block testing it yet? That's the ONLY way to tell if you have a blown head gasket or cracked head, block, cylinder. It checks for exhaust gas in the cooling system, no other test does this.

I hate to say this but my car did the same EXACT thing, random overheating, shut it off for 1 minute and start it and the temp comes plunging down to normal. It would overheat as soon as it warmed up from a cold start one day but the next day I would beat the crap outta it on the highway and it would not overheat, but then it would when I was just crusing the next day. Compression on my motor was 180 in all cyl's. Pressure tested my cooling system it checked out fine (held 15psi for 10 minutes). Never burned or used any coolant. You can check my post in MKIII section to see what my problem was.

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01-12-2007, 08:27 PM	#1
IHateHacks 20psi boost Join Date: May 2006 Location: New Haven/Hamden Posts: 793	I would try changing the thermostat. Or you could install an aftermarket water temp gauge, (to see if its a gauge problem which I doubt) by removing the stock gauge sensor (in that pic), and installing the aftermarket sensor in its place. Have you tried block testing it yet? That's the ONLY way to tell if you have a blown head gasket or cracked head, block, cylinder. It checks for exhaust gas in the cooling system, no other test does this. I hate to say this but my car did the same EXACT thing, random overheating, shut it off for 1 minute and start it and the temp comes plunging down to normal. It would overheat as soon as it warmed up from a cold start one day but the next day I would beat the crap outta it on the highway and it would not overheat, but then it would when I was just crusing the next day. Compression on my motor was 180 in all cyl's. Pressure tested my cooling system it checked out fine (held 15psi for 10 minutes). Never burned or used any coolant. You can check my post in MKIII section to see what my problem was.