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Old 10-01-2012, 05:53 PM   #1
RallyB
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Default Temp Issues on 07 2.5i

Today i was doing 75mph for a good distance when my Temp gauge began to creep toward the red, after finally getting home the coolant overflow tank was over the full line, coolant had spilled out from somewhere, and i have no pressure on my radiator cap at all. My head gaskets were just replaced this previous april and are NOT leaking, thinking it could be the water pump i've never had replaced? or the thermostat? or both? car is at 95,000 miles
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Old 10-01-2012, 06:15 PM   #2
yarrgh
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What do you mean, no pressure on radiator cap? As in, you got it tested and it won't hold pressure? It can be a culprit. You can also remove the thermostat and test in a pot of boiling water. It's a possibility that the water pump has failed, but not highly probable. Since you're near the timing belt mileage anyway...

Don't forget that you can use the heater as a secondary heat exchanger if the engine temp starts rising. It'll be uncomfortable for a while, but your engine will survive longer. Of course, that is IF the water pump is circulating coolant.
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Old 10-01-2012, 06:31 PM   #3
RallyB
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yea i understand wat ur saying but it only does it over a certain mph and it wont fully overheat it'll rise and then drop when i lower my speed i think it could have been a bad head gasket but i just changed it an i checked my hoses and fans no leaks and the fans come on so now im thinking its either a thermostat or a water pump
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Old 10-01-2012, 08:20 PM   #4
RallyB
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i'm convinced it is the thermostat
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Old 10-01-2012, 08:48 PM   #5
RaceFaceXC
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I wouldn't rule out the HG just yet, especially since it was just replaced. If there was a problem or the HG job was even a little bit sloppy it will usually show itself soon after.

Rule out the thermostat, water pump and rad cap first as they are all easy to test.
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Old 10-02-2012, 10:31 AM   #6
RallyB
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That's exactly what i'll be doing today
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