Engine Vibration

1,155

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

216,965

What is your idle rpm in park?

2 out of 2 people think this is helpful.
1,155

The idle rpm is 1000.

1,155

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 out of 1 people think this is 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

1,155

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

Add photo

Related Questions

Riviera

Looking for a Used Riviera in your area?

CarGurus has 130 nationwide Riviera listings starting at $2,495.

ZIP:

Search Buick Riviera Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Buick Riviera Experts

#1 Alvin1966
Alvin1966
Reputation 1,030
#2 Chris Kelley
Chris Kelley
Reputation 540
#3 Jason Zane
Jason Zane
Reputation 380
View All

Related Models For Sale

Used Buick Regal
146 Great Deals out of 11,675 listings starting at $1,450
Used Cadillac Eldorado
391 listings starting at $2,500
Used Chevrolet Impala
894 Great Deals out of 35,191 listings starting at $1,700
Used Chevrolet Corvette
280 Great Deals out of 20,476 listings starting at $3,688
Used Buick LeSabre
13 Great Deals out of 2,251 listings starting at $1,299
Used Buick Park Avenue
500 listings starting at $2,500
Used Cadillac DeVille
3 Great Deals out of 1,953 listings starting at $1,600
Used Ford Mustang
549 Great Deals out of 42,541 listings starting at $1,699
Used Chevrolet Camaro
435 Great Deals out of 40,499 listings starting at $3,500
Used Buick Skylark
104 listings
Used Lincoln Continental
3,790 listings starting at $42,995
Used Pontiac Grand Prix
23 Great Deals out of 3,699 listings starting at $800