Posted: Wed May 23, 2012 5:50 pm Post subject: Overheating... again
05 LS, 3800 V6 Replaced the thermostat about a year ago. Early spring had it in for a flush and fill, then replaced the water pump. Still running hot when sitting still. It will get to just above half way, fans kick on and it cools right down. Both upper and lower radiator hoses are super hot to the touch. Faulty thermostat or clogged radiator? At my wits end!
Mine does the same thing. Not too worried about it because it doesn't get up near the red. The guage going up half way should be very close to normal operating temp. Stock stat should be 195, I think the middle of the guage is 210...close enough. I replaced mine with a Napa stat...maybe its just a property of the stat. Some will open at 195, some will open at 198 ect, either way its close to half way.
I was thinking the possibility of a clogged radiator. Anybody have this problem in one of these cars. When the shop did a flush and fill he asked if I had put any stop leak in, I told him no. He said the flushed out coolant was pretty chunky.
Is there a way to check for a clog without pulling the rad?
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