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Old 03-14-2018, 01:28 PM   #21
hholbein
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Join Date: Jun 2008
Location: Portland, OR
Posts: 1,392
 

1997 SW2
Default Re: Rattle @ idle only under load (A/C)

Quote:
Originally Posted by fullyloadedSL2 View Post
Always use OEM belts and tensioners with these cars. Aftermarket tensions rarely last more than a year. I replace cheap tensioners like clockwork. OEM lasts 10x longer.
+ 1 on OEM tensioners. I've had the bearings wear out before the tensioner, and those can be replaced quite economically on the Gen-2 versions with metal pulleys.

I've had quite good luck with Gatorback belts keeping things quiet.

And I did have a waterpump bearing noise that had me worried that it was the AC clutch -- until I put on a shorter belt to take it out of the circuit and voila -- the noise was still there. Isolating noises to their root cause can be challenging, but it's worth your time trying the cheap approaches first. If my timing chain started to go, I'd sell/scrap the car. Too much hassle on a 21 year old car.

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