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slipping belt? (archive)

[ Follow Ups ] [ E36 M3 Message Board ] [ Msg. Board FAQ ]

Posted by albert jenab on February 13, 2000 at 11:28:26:

In Reply to: Getting Partial Boost for my car.......help! posted by CoolM3 on February 11, 2000 at 23:27:05:

: Hi,
: I have a 98 M3 with ERT's Vortech SC unit and I have just recently added a
: boost gauge to my car, due to suspicion that my car is not making full
: boost. And well, what do you know? Confirming to my suspicion, my car was
: only making 3.5lbs of boost at 6000rpm. Now here is my question, what could be
: causing this? Bad connection? wrong crank shaft? what?! I have been trying
: to figure it out with my bare naked eyes and I couldn't see anything wrong
: with my setup......pls help!!

: CoolM3

Check belt tension in addition to making sure clamps, etc. are tight and not leaking. Don't know if the belt is a v-rib type or not. If it is, lots of people lose SC boost because it slips under load.

One dead give-away is black dust around the engine comapartment near the belt. If you see that, it is slipping and tearing up the belt. If it's a toothed belt, look at the underside of the belt to see if the teeth have been sheared off.

Did you install it yourself? You might go through the whole procedure again, making sure everything is hooked up to where it should be.

There may also be a restriction somewhere in the intake tract, check inside all the tubes and SC inlet/outlet.

If the belt is tight and all hose connections are too, no obvious blockage, hate to say it but maybe the SC is toast.
-Al


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