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Old 12-29-2012, 08:01 PM   #15 (permalink)
2000mc
herp derp Apprentice
 
Join Date: Oct 2008
Location: Lawrence, KS
Posts: 1,049

Saturn-sold - '99 saturn sc1
Team Saturn
90 day: 28.28 mpg (US)

Yukon - '03 GMC Yukon Denali
90 day: 13.74 mpg (US)
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i'm not sure i really understand what all is going on.

i was hoping you could try to list out all of your symptoms, what you can see or hear, and when it does what. without listing possibilities, or likely causes.

"hot" might not be sufficient information, 190 or 230 i would consider hot, but the difference is huge in looking at cooling issues. and you might have to get some sore of scanner to see data.

any dash lights on? or dtcs? i think a car being P&G'd could potentially set a p0128, and command on the cooling fans. could there be a coolant level sensor at play? revving the engine might get coolant to the sensor and when at idle it commands the fans on.
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