Odd temperature guage behavior
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Odd temperature guage behavior - 1/23/2008 4:23:03 PM
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coda
Posts: 4
Score: 0
Joined: 1/23/2008
Status: offline
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We have a 95 Eclipse GST, stock. Bo-ring, I know, but it's my wife's car.
I recently noticed something odd with the coolant temperature reading. For 13 years, the needle on the temp guage has always locked at mid-way after warming up, never varying.
Two days ago, it suddenly started rising a little, to the top of the thermometer icon on the guage, not to the upper danger limit.
Radiator is clean, fluids at proper levels, system was recently flushed and replaced, fans are operating.
After test driving and experimenting, I concluded that driving without the turbo, and at lower rpms, the temperature behaved. Upon higher acceleration, invoking the turbo, the needle would quickly move up to the higher position. Ok, I thought, the extra heat from turbo driving is causing the higher temp.
The really odd thing is that with the needle at the higher level, driving on the highway, when I depressed the clutch and let off the gas, the engine going to idle, the needle quickly returned to the midpoint. Releasing the clutch and depressing the gas again, the needly quickly climbed back higher. I did this several times and it was consistent.
The needle movement changing with RPM seems much faster than the water temperature could be actually dropping. Has anyone seen such odd behavior from their water temperature sender or guage? Or are there any other ideas?
Thanks in advance.
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RE: Odd temperature guage behavior - 1/23/2008 5:01:18 PM
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Rob
Posts: 867
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Joined: 1/1/2008
From: VT
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Weird. I'd start with the thermostat. Throw it in a pot of boiling water, and if it opens then it's still good.
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Rob/03 RR Lancer Evolution VIII
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