Engine Vibration

1,285

Asked by May 18, 2013 at 09:44 PM about the 1995 Buick Riviera Supercharged Coupe FWD

Question type: Maintenance & Repair

In a previous post I asked for help in resolving an engine vibration in my 1995 Supercharger Riviera. Well I am back.
Since that post and in an effort to stop/minimize the problem I did the followings with NO AVAIL. Changed ALL the motor/trans supports ; pulled the oil pan and checked the crankshaft for lose rods; pulled the front plate and replaced all the gears and chains, checked the balance shaft, checked the coil packs, replaced the supercharger and replaced several MAF sensors. And yes I had a transmission company checked to determined if maybe it was the trans. even though the vibration is present when the transmission is in parked/neutral. And yes I have changed several harmonic balancers. Is there something I missed????? Thanks.

5 Answers

261,865

What is your idle rpm in park?

2 of 2 people found this helpful.
1,285

The idle rpm is 1000.

1,285

Well readers I finally figured out what was causing the engine vibration. It was the harmonic balancer. Obviously GM in its infinite wisdom decided to have two different harmonic balancers and 6-8 different aftermarket part numbers for that year model. And I not knowing this threw away my original part which included the parts no. But after many changes I realized my Riviera required the balancer with the larger balance bar. Word of advice, please keep the original part and or parts' number until problem is resolved.

1 of 1 people found this helpful.

Hello I have the same problem and im just wondering what is the original part number!? My Riviera vibrates and sounds like its only firing on 5 cylinders when it does run on 6. I replaced the harmonic balancer but I am thinking I may have the wrong one. But I threw away the old one. Thanks

1,285

Alvin1966 answered about a second ago Say Taylor..I corrected my problem with Part Number: 88960264. This balancer as compared with all previous balancers has the long or large bar located (inside/backside) of balancer. Good Luck.. Semper FI

Your Answer

Riviera

Looking for a Used Riviera in your area?

CarGurus has 109 nationwide Riviera listings and the tools to find you a great deal.

ZIP:

Buick Riviera Experts

  • #1
    Alvin1966
    Reputation
    1,120
  • #2
    Chris Kelley
    Reputation
    550
  • #3
    Jason Zane
    Reputation
    410
View All

Related Models For Sale

Used Buick Regal
164 Great Deals out of 8,422 listings starting at $5,299
Used Chevrolet Corvette
176 Great Deals out of 19,378 listings starting at $3,941
Used Chevrolet Impala
564 Great Deals out of 36,758 listings starting at $990
Used Chevrolet Monte Carlo
9 Great Deals out of 1,236 listings starting at $1,488
Used Ford Mustang
608 Great Deals out of 39,013 listings starting at $1,500
Used Pontiac Grand Prix
12 Great Deals out of 2,552 listings starting at $1,750
Used Buick Park Avenue
376 listings starting at $1,000
Used Pontiac Firebird
10 Great Deals out of 767 listings starting at $2,500
Used Buick Skylark
86 listings
Used Chevrolet Camaro
501 Great Deals out of 33,586 listings starting at $1,450
Used Buick LeSabre
7 Great Deals out of 1,720 listings starting at $999

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.