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Old 03-03-2004, 06:03 PM
WANT '71 280SEL's Avatar
I'll Go Upside Your Head!
Join Date: Jan 2003
Location: Dallas, TX
Posts: 3,378
190D 2.2 waterpump is squealing

I know it's the waterpump squeeling because it sounded like it was coming from there and I used a little WD-40 on the back of it where you can see the pulley turning and the squeak stopped. My brother wants to drive it from Indiana to Colorado Monday and obviously shouldn't drive it on a failing waterpump. The idler pulley and serp. belt were replaced about 1,000 miles ago.

Is it difficult to replace the w/p on these? It doesn't look bad at all but I didn't know if there were any tricks to it. How does the tensioner work? Is it like Gm's where all you need is a breaker bar and a 15mm to ease the tension?
I need to order this part today or tomorrow and have it send over-night so please let me now what you think.



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Old 03-04-2004, 09:28 PM
Registered User
Join Date: Feb 2004
Location: Wausau
Posts: 2
I haven't had the pleasure as of yet so I looked it up on the CD and it looks straightforward, If you want I can send you that section of the manual in a pdf format.

Good Luck
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Old 03-04-2004, 11:00 PM
190D22's Avatar
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Join Date: Apr 2002
Location: Columbus, Ohio
Posts: 876
Mine's somewhat noisy, but not like you describe. Mine sounds more internal rather than a pulley problem. If WD-40 silenced the squealing temporarily why not put an actual gear lube or something of that sort on it.

But I believe the WP is pretty straight forward. It's something I'd tackle myself. It's easy to get to since it's right there on the side with nothing really in the way. I think you only have to take the fan shroud off and drain the cooling system... then you're set. But I may be wrong.

1984 190D 2.2 Auto 220k
2001 Jeep Cherokee Sport 70K
2004 Lexus RX-330 ??K
2005 Chrylser Crossfire LTD 6K

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