Car shakes

Tiny
SHAUNBORBOA
  • MEMBER
  • 1991 BUICK PARK AVENUE
  • 6 CYL
  • FWD
  • AUTOMATIC
I have 91 Buick Park Ave 3.8litre and I just replaced the balancing pulley, alternator and plugs with wires gaped correctly. My problem is: when Im at at 65 and the car evens out it starts to shake and even more if I acc. Slowly from 65, but if I punch it, it sounds fine, and then shakes when it evens out again. Is it the cylinders or a bad piston? I an completely lost and want to know if I should fix it or put a for sale sign on it
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Saturday, February 26th, 2011 AT 12:55 AM

2 Replies

Tiny
FIXITMR
  • MEMBER
Is that a 3.8(3800)? Does it run smoothly at idle and normal driving? Could be an EGR problem.
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Saturday, February 26th, 2011 AT 1:25 AM
Tiny
ZETTA
  • MEMBER
I had a similar problem with my 2002 Park Ave shaking at 60 plus mph. After new tires, alignment my mechanic did finally find the problem. 2 cracked engine mounts, and rear and front transmission mounts were busted. Something we would never have thought about.
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Thursday, March 17th, 2016 AT 4:21 PM

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