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Join Date: Jun 2004
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Question Grinding Sound - 1000-2000RPM

I have an auto 87 944. Whenever the engine goes to a specific mark between 1000-2000 rpm it makes a grinding sound - it only happens on this one specific rpm mark. Once it passes this rpm mark, there are no other sounds.. Otherwise, the car runs excellent, no problems.

Anyone have any idea what this could be? Sorry I can't be more specific...

Thanks!!
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'87 944 - Champagne - Always a celebration!
Old 08-29-2004, 11:18 AM
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I have an uncomfortable vibration at about 3200, but no grinding and i have a 5-speed.....so really I dont know thought it might be comforting that someone else also has rpm related problems, Good Luck
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1985/late 944
Old 08-29-2004, 06:51 PM
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I get a funny high pitch rattle on decel from 4,000rpm Im still trying to find it and its been a year. Good luck
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1986 951, Stock for now.
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Old 08-29-2004, 07:09 PM
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I get a funny "clank clank garruuuumptidy shploompt" noise on tuesdays...
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Old 08-29-2004, 07:11 PM
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dave,

I noticed the same thing a few weeks ago.. scared me to death. turns out that those two metal posts at the rear of the car on each side (dunno what they are for, but they are slotted for some reason) were bent in, and the one on the drivers side was rubbing against the muffler. For whatever reason, hitting between the 1000-2000 rpm range caused the most god-awful sound. Upon closer inspection, pulling these metal posts back with a pair of pliers, and no more grinding sound.

Sure hopes this helps. Felt great knowing the fix was free and easy... Of course YMMV.. Good luck
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C02 / M158 / M418 / M425 / M431 / M454 / M533 / M650 / M946

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Old 08-30-2004, 04:24 AM
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