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#1
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Overheating c280 w202
Tech question for you...
I've got a 96 w202 c280 w/165k mi. Replaced the thermostat ~10-15k mi ago (~18 months) due to overheating. It hass run fine @ ~90c degrees until recently. Now it runs in the 105c-119c range (not yet cresting the 120c degree redline threshold). Important info: Ambient temp 50f degrees Both cooling fans appear to be operational (kick on and run low then high as the temp raises and are able to keep it under 120c degrees) This is a 3rd car and seldom is used Coolant level is OK No CEL and no Low Coolant lights What should I look at first? Last edited by visioncasting; 01-08-2009 at 10:38 AM. |
#2
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When the car is warmed up, have you checked the upper and lower radiator hoses to compare temperature? If one hose is alot cooler than the other, then your thermostat is sticking, and not fully opening.
Other possibility is a clogged radiator, but check the hose temperatures first. |
#3
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Good call.
Good call. I am assuming (possibly incorrectly) that the thermostat is good since it's been recently replaced. But it's probably prudent to give it a check before I start tearing off the much more expensive water pump. Anything else I ought to look at?
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