Engine Vibration

1,275

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

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

254,235

What is your idle rpm in park?

2 of 2 people found this helpful.
1,275

The idle rpm is 1000.

1,275

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

1,275

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 126 nationwide Riviera listings and the tools to find you a great deal.

ZIP:

Buick Riviera Experts

  • #1
    Alvin1966
    Reputation
    1,110
  • #2
    Chris Kelley
    Reputation
    550
  • #3
    Jason Zane
    Reputation
    410
View All

Related Models For Sale

Used Buick Regal
171 Great Deals out of 9,184 listings starting at $2,500
Used Cadillac Eldorado
391 listings starting at $2,500
Used Chevrolet Impala
507 Great Deals out of 33,699 listings starting at $950
Used Ford Mustang
686 Great Deals out of 38,301 listings starting at $895
Used Chevrolet Monte Carlo
15 Great Deals out of 1,314 listings starting at $1,500
Used Buick LeSabre
17 Great Deals out of 1,882 listings starting at $999
Used Chevrolet Caprice
199 listings starting at $10,595
Used Chevrolet Corvette
276 Great Deals out of 20,697 listings starting at $2,990
Used Chevrolet Camaro
405 Great Deals out of 30,567 listings starting at $3,550
Used Cadillac DeVille
4 Great Deals out of 1,637 listings starting at $1,995
Used Buick Park Avenue
427 listings starting at $1,295

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.