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Old 12-10-2002, 02:54 AM
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Angry Engine squeaks during startup (W124, 230E)

I'm experiencing a high pitch squeaking noise which occurs for 3 - 5 secs after startup. The noise disappears thereafter. Noticed some wear and tear in the drive belt and replaced it with a new one. The noise remains after changing the belt. Anyone knows the cause of the noise? pulley?

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Old 12-10-2002, 03:42 PM
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yal yal is offline
Join Date: Oct 1999
Location: New York, Long Island
Posts: 2,707
You may have a bad belt tensioner. If it is, you can't fix it, it has to be replaced.
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Old 12-10-2002, 08:39 PM
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My belt tensioner has been replaced eight mths back. I'm not so sure if the belt tensioner is the culprit as I normally detect some vibration noise when the tensioner goes bad. In this case, I'm not getting the usual noise associated with a bad tensioner.
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Old 12-11-2002, 08:54 AM
it leaks, its german
Join Date: Mar 2002
Location: raleigh nc
Posts: 1,111
Depending on year, air pump.

I'd also look at the idlers, fan bracket and coolant leaks. (seen a bunch of water pumps seep a little coolant on the belt when they sit awhile)


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