Help...strange noise

[SHO-Canada]

ok, I have an 89.

I got both belts replaced about 1 month ago, and the other day I noticed that my car is making a higher pitched noise that goes up and down with the revs (at first I thought it was engine whine on my stereo).
It does it while idling in neutral as well.
I took it back to the place that did my belts and they figure it might be a belt tensoner or even my timing belt.

any ideas?

 

[F-22 Raptor SHO]

I have a new Good Year Poly-Cog accessory belt that I installed about 2 months ago and yes it does have a subtle whine to it as it is new. I kinda like it (sounds like a small supercharger)The tension pulley is spring loaded on my 95 and I dont have to adjust it because it sets itself.

You said you had the belts replaced, does that mean both the timing belt and the accessory belt?

Michael squint

 

[sdpatt]

It is not unusual for some of the serpentine belts, such as the Goodyear polycog, to give off a little whine when new. There is a chance they overtightened the tensioner. With the engine off, check the span of the belt between the crankshaft damper and the A/C compressor pulley. You can reach this span from below the splash shield. Press on the center of the span with a firm finger. There should be about 1/4" of deflection in the belt. If you can only move it about 1/8" or so, you could relax the tensioner a little. To do that, loosen the 14mm nut in the center of the tensioner pulley about 1/2 turn. Now rotate the 5mm Allen head screw at the top of the tensioner in the counterclockwise direction until you get about a 1/4" deflection in that span of the belt. The belt only needs to be tight enough to prevent the "chirp" when the A/C compressor engages at highway speed rpms. Too tigh and it will shoten the life of the various pulleys in the system. When finished adjusting, torque the center nut to 25-37 lb-ft.

 

[SilverSHO]

I stopped worrying about my car's making strange noises long ago. They're either inconsequential, or I can't afford to fix them. Mostly I just can't afford to fix them. frown

 

[SHO-Canada]

ok, just got back from the garage. at first the mechanic thought it was the water pump, as there is a little play in it.

AFter putting it on the hoist, it did turn out to be the tensioner pully (bearing). I always thought these things were self-adjusting (self-tightening/whatever).

Do you think the place that installed the belts, tightened the pulley too much, which screwed the thing up?

of course you can't buy just a bearing, and ford wants 165.00 (cdn) for the pulley

<small>[ March 21, 2002, 05:24 PM: Message edited by: SHO-Canada ]</small>

 

[underdog1924]

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