vibration under acceleration
#1
Burning Brakes
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vibration under acceleration
i was wondering if anyone has any ideas why i am getting vibration coming from under the car...feels like it is tranny related..i can feel it through the shifter..and when in 1st gear or 3rd under acceleration the shifter feels like it wants pop out of gear...the noise feels like thumping under the car from about the drvers seat back.
thanks
doug
thanks
doug
#3
Burning Brakes
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yeah every gear under acceleration ...somthing thumping under the car...and i notice the shifter wanting to move back while in the 1st or 3rd and 5th gear...i was thinking drive shaft...maybe some kinda mount
#6
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Put it on a rack and see if someone can hear it more in the torque tube, tranny or rear wheel bearing area with an auto stethoscope. Also check the bell housing area just in case.
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#8
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the would the tube that connects the the engine input at the back of the bell housing to the front of the transaxle...and get the car to a Good shop.
#9
Burning Brakes
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im putting it on a lift tomorrow...ill look at everything...hopefully not too bad...i just need some ideas as to what to look for and where....thanks
#10
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This is a problem that many Porsche mechanics have a lot of trouble figuring out. It is your axles, especially if the vibration intensity changes a bit from time to time.
You should replace both of them (all 4 cv joints), otherwise the side you don't replace will put wear on the new axle quickly.
You can grab the axle shaft and try to twist it with weight on the rear tires (or the e-brake), if you can twist it at all (side to side play is fine), you need new axles.
Ahmet
You should replace both of them (all 4 cv joints), otherwise the side you don't replace will put wear on the new axle quickly.
You can grab the axle shaft and try to twist it with weight on the rear tires (or the e-brake), if you can twist it at all (side to side play is fine), you need new axles.
Ahmet
#11
Burning Brakes
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this seems like it might be different ..i ended up repacking my bearings on the drivers side cv next to the exhaust last october at the track...so i know what that feels like..this seems like the thumping is under neither right at the seats but in the center of the car.
Doug
Doug
#13
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You haven't lost a CV bolt have you? That would certainly throw things out of balance. I read somewhere that it's better to replace those bolts everytime they come out..... (?)
#15
Rest In Peace Jaak
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My problem turned out to be the rubber pucks that hold the exhaust to the hangers. 1 had fallen off and the exhaust started banging under excelleration. We ended up reversing a hanger to keep the puck on. Got all quiet after that ... just a sugestion!