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Old 07-20-2015, 12:36 PM   #1
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Join Date: Sep 2012
Location: Mainly Providence RI, and Exeter NH
Posts: 97
Engine bucking

'01 Aero wagon, MT. 210k

This has been a long running thing now.. but I figured I'd ask again. When ever I put my foot on the gas or take it off, no matter the gear, it feels like the engine is bucking. RPMs stay consistent. I replaced all motor mounts and the torque arm bushing on the car when I purchased it at 160k. It's now at 210k, and still.. same as always. I've always assumed it was the rear engine mount.. should I bother replacing it again and see what happens? Maybe I did a bad job installing it in the first place?

What else could it be? Clutch isn't slipping and the transmission still pulls hard..
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Old 07-21-2015, 02:09 PM   #2
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Join Date: Aug 2005
Location: Dulles, VA
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Are you throwing any codes? Try changing out or borrowing a DIC and see if that makes a difference. Are all your vacuum lines in good shape and no cracks, which might show up under load. This includes the intercooler pipes and elbows.

On the motor mounts, with an observer, foot on the brake, feather the clutch in and see if the engine lifts up? Rear motor mount is reachable from up top or on a small set of ramps.
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