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Old 01-30-2011, 08:24 PM
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Join Date: Feb 2010
Location: nc
Posts: 4
1985 190E loud squealing sound and smoke from my belt

I just had the belt tensioner replaced a few weeks ago. The belt is tight.
when i turn the car on i get a loud squealing sound and smoke from my belt.
It started this morning out of nowhere as i was pulling into a parking lot. i havent moved the car since. Any ideas what could be the problems, and any solutions?

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Old 01-30-2011, 08:51 PM
Posts: n/a
It sounds like a tensioner may have frozen up on you. It could be the air pump locked up too. You will have to check the different things the belt drives to try and find the problem & maybe loosen the belt some in order to do it.
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Old 01-30-2011, 11:17 PM
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Join Date: Feb 2010
Location: nc
Posts: 4
thanks, i'll go check it out right now.
Not to sure about where to find the air pump.
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Old 01-31-2011, 07:46 AM
Posts: n/a
If you have the 2.6L you may have to remove the fan clutch up front to be able to see what the problem is. It's pretty well covered up on that model. Since it happened so soon after replacing the tensioner, it can possibly be the suspect here.
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Old 01-31-2011, 10:02 AM
Cal Learner's Avatar
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Join Date: Aug 2006
Location: Marysville, CA
Posts: 781
No air pump in 1985.
1988 California version 260E (W124)
Anthracite Grey/Palomino
Owned since new and still going strong and smooth
MBCA member

Past Mercedes-Benz:
1986 190E Baby Benz
1967 230 Inherited from mom when she downsized
1959 220S Introduced me to the joys of keepin' 'em goin'

There are only 10 kinds of people in the world--those who understand binary and those who don't
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Old 01-31-2011, 10:07 AM
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Join Date: Oct 2004
Location: Baton Rouge La
Posts: 2,630
hmmm... could your alternator pulley old and maybe starting to lock up...\

or another pulley where the bearings are going

1989 300ce 129k
( facelifted front,updated tail lights, lowered suspension,bilstein sports, lorinser front spoiler, MOMO steering wheel, remus exhaust,stainless steel brake lines). (Gone)

1997 s320 154k (what a ride). Sold with 179k miles. Replaced with Hyundai Equus

1994 e320 Cabriolet 108k

1972 280se 4.5 153k Owned for 12 yrs, sorry I sold it

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