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Old 10-09-2012, 12:26 PM   #1
Scooby Newbie
Member#: 270889
Join Date: Jan 2011
Chapter/Region: TXIC
Location: Houston, TX
2004 Impreza WRX

Subaru Stars Temperature issue, please help!

I had some bad work done on my 04 WRX by some worse mechanics a while back, and it has caused issue after issue.. Initially my radiator cracked during a particularly hot Houston spring and I had to have it replaced. They replaced the radiator, the t-stat, both hoses, coolant, gaskets, etc. It worked great for almost a day and the bottom end hose disconnected itself, spilling all of the coolant onto the pavement. I went back and they apologized, assuring me that they must not have tightened the clamp enough. It happened again about 3 months ago (again on a 100+ degree day). This time they were completely clueless, they claimed that they checked the radiator, the hoses, and the clamps and it was all fine, so they refilled the coolant and attached the hose, and sent me on my way. I was pretty furious but couldn't at the time afford to have someone else work on it. Since then my car has been running noticeably cooler, but every once in a while, especially if i bog the engine or when sprinting between intersections, the temp shoots up, until i either crank the heater and let it sit for a minute or hop on the freeway and cool it by keeping air moving through. This was an issue that only occurred once every few weeks and only when I wasn't expecting it, so I wasn't sure if it was my fault for heating up the clutch or bogging the engine.. But last night it started heating up and wouldn't cool down. I tried to turn on the heater to vent the excess heat, but it was blowing cold air for a few minutes before it got hot. Even after I came to a stop, it was reluctant to cool, but at least it wasn't getting any hotter, so i turned off the engine, checked the reservoir, let it chill for a few minutes and hurried across the street to get home, all the while the temp gauge was sitting at about a centimeter past 'uh oh, that's not right'.

I know this is pretty wordy, but I want to be as descriptive as possible. I'm really hoping its not an air pocket caused by a blown head gasket, but I have yet to bleed the system, so I'll update on that later. Maybe it's the thermostat having trouble opening or staying open, which might explain the excessive heat/pressure build up in the radiator blowing off the hose. I'm really not an expert, I took a year of high school auto tech, and experience with basic maintenance on my own car, so I REALLY need help.. haha. any input would be greatly appreciated.
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