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Registered
Join Date: Mar 2003
Location: Conyers, Ga
Posts: 381
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My 951 shakes violently!
Ever since I bought my car back in January it has been shaking like crazy. Mainly it's at idle. The steering wheel is the worst, followed by the seats and the mirrors. The car feels like a giant vibrating back massager (which is normally nice) but not while you are trying to drive. When I raise the RPM's the shaking (for the most part) goes away...unless I’m accelerating hard, then it's the driveline somewhere else vibrating, but that’s not the problem I’m trying to solve right now. I took it to the shop, the timing was off a few degrees and the balance shafts and belts were replaced and the motor mounts were checked. So all that's in order. I just can't figure it out. Any suggestions?
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1986 951, India Red. (Mine) - Not For Sale Anymore 1987 944, Alpine White. (Bother's) 2000 Audi A6 2.7 Biturbo Melange (Mom's) |
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05-05-2003, 04:37 AM
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Join Date: Feb 2001
Location: Viera FL
Posts: 5,642
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either your motor mounts are shot, or your balance shafts were out of alignment when the belts were replaced.
AFJuvat
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Es geht nicht darum wie schnell man faehrt, sondern wie gut man schnell fahren kann. Ihr Brunnen der nutzlosen Porsche Information |
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05-05-2003, 04:42 AM
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Join Date: Dec 2001
Location: New Jersey
Posts: 2,093
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I'm all for the balance shafts
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{1987}944S - (SOLD). |
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05-05-2003, 05:43 AM
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Join Date: Oct 2002
Location: Dubai
Posts: 388
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Mine is pretty much the same. It gets worse when it warms up. It could be a number of things. Idle control valve, vaccum leaks after the air flow meter, dirty injectors just to name a few.
I'm still looking to solve my shakes and vibes at idle. I have done loads, including motor mounts, injectors cleaned, belts and pump, exhaust leaks. Still no success.
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coupe http://www.p-caronline.com/directory/coupe Porsche 944 Turbo, 1986 Fiat Coupe 20v Turbo, 1997 |
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05-05-2003, 07:00 AM
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Join Date: Dec 2002
Location: South Dakota
Posts: 1,131
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Try giving it less caffein.
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95 240sx-track slut w/ too much done to list 87 944 n/a-old "toy" that broke too much |
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05-05-2003, 09:39 AM
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Join Date: Oct 2002
Location: Palm Bay, Florida
Posts: 317
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My money is on the balance shafts.
If at idle shakes like h*ll and the higher the rpm the less shake it is the B-Shafts. Get it looked at quick. Don't need to kill kittens. 
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'83 944 "Guards Red" New Everything (seems like) 16" 968 Wheels has never left garage (yet) |
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05-05-2003, 11:34 AM
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What would Darth Vader do
Join Date: Feb 2001
Location: Orange, California
Posts: 1,324
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Id have another look at the balance shafts like AF mentioned, Was this a reputable shop you took it to? Also there is a tendancy for some people to put the balance shafts at 180 off.
You said idle but what happens when the car is moving down the road?
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1983 944 (2002 to now) 3-924's (Sold) 1967-912 (Traded) NEVER put a used water pump in your car... |
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05-05-2003, 10:03 PM
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