Question about 1998 Buick Riviera

2 Answers

Lack of Acceleration

My supercharged '98 Riviera has about 73k miles on it and I'm *SURE* it hasn't had anything done to it besides regular oil changes, brakes, and new tires in the last 50k miles.

Problem: It doesn't accelerate like it used to. When I hit the gas pedal, I used to feel some serious g's as I was thrown back into my seat... this doesn't happen anymore.

Attempted Solution: I took it to a mechanic to ask about a tuneup, but he said it looks fine and doesn't need anything just yet.

Anyone have any ideas as to what kind of maintenance should be done that this mechanic claims is "unnecessary", or what might be going wrong? I'm thinking about bringing it to the dealership to see what they say...

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  • Buick Master
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If the car is ECM controlled , the mechanic is right about a tune up
as the ECM tunes the engine 60 times a minute
plugs will last almost the life of the engine
what is suggested is that you have the fault codes read first , then check the cat converters for failure
when operating at the correct temp and then immersed in cold water , snow( below zero road conditions ) or the like , the core fractures and tends to block the exhaust flow
with the car on a hoist , if you hit the cat with your hand and it rattles , that could be one area that needs attention

Posted on Mar 25, 2017

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  • Buick Master
  • 5,642 Answers

Fuel filter, air filter, fuel injection put some gas tank.

Posted on Mar 25, 2017

6 Suggested Answers

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: supercharger maintenance

On the let front of the Supercharger there is a small level plug that is eay to remove, Whatever you do,,,do not overfill. The oil is only available through the dealer at about seven dollars for a couple of ounces. Takes about ten minutes. Good luck

Posted on Feb 02, 2009

Hubbyof2
  • 5 Answers

SOURCE: 95 buick riviera supercharger

you can not put a regular 3800 intake in place of the 3800 super charged engine,the compression ratio is lower than the regular 3800 engine.......!

Posted on Feb 16, 2009

michigan man
  • 3533 Answers

SOURCE: Speed) when i push the gas pedal it wont take off fast.

check the EGR valve and the vacuum lines and for any GM parts try Schram auto and truck parts 1-800-292-1032

Posted on Mar 20, 2009

defadad
  • 351 Answers

SOURCE: wanna know if i can put a tranny for basic 1995 riviera in my Supercharger

you will most probably need a beefed up tranny to take the power of the engine, I have just installed a 350 supercharged chevy motor in my sons car with a Turbo 350 transmission and a shift kit which I have been told by an auto trans mechanic may not take the power of that engine.
It is costing him $1500 australian to have it reconditioned so I hope it will survive the rides

Posted on May 10, 2009

  • 34 Answers

SOURCE: 1995 riviera supercharged with 91000 miles has a

check compression possible burnt valve check fuel pressure check ignition componants

Posted on Jul 10, 2009

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3 Answers

Serpentine belt on a 3800 supercharger


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Jul 10, 2009 | 1995 Buick Riviera

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you can not put a regular 3800 intake in place of the 3800 super charged engine,the compression ratio is lower than the regular 3800 engine.......!

Jan 27, 2009 | 1995 Buick Riviera

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It takes a 3/16 allen wrench to open the port to check and add fluid which is on the top of the charger just left of the cover. You don't need to take the cover off to access.

Oct 06, 2008 | 1998 Buick Riviera

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