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Old 04-03-2006, 02:31 PM
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The Workshop MB The Workshop MB is offline
Mobile ASE Master MB Tech
 
Join Date: Mar 2006
Location: california
Posts: 55
running hot

I have seen this problem before while working at the dealer. With everything working as it should, we found that the radiator was at fault. If you have accesss to a tempature gun, check the tempature across the radiator. Indicator is when the car does not cool down even at freeway speeds (more air is coming over the radiator). Here is a test to see if your fan clutch is working normally: Set a high idle for a peroid of time, you should hear a large blowing sound, that is your fan working.

In short, we ended up swapping in a new radiator (relatively easy replacement), vehicle ran at normal from then on.
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