1985 Buick Riviera keeps stalling out!

Asked by Nov 07, 2012 at 01:31 PM about the 1985 Buick Riviera Coupe RWD

Question type: Maintenance & Repair

ok, this is a bit long winded but i want all the information there as to get a proper assessment.
i bought my buick about 10 days ago and have been having nothing but problems with it. the first time
it stalled out was shortly after i added new gas to it so we though it could be old/bad gas mixing
around with new gas. added some fuel treatment and replaced the fuel filter. would still stall if i was
stopped in drive but would continue to run if i threw it into neutral at stop lights. decided to give it a
tune up so i replaced all the bad vacuum hoses, spark plugs, plug wires. got it an oil change, filled the
all the fluids up and burned all the gas i had added out and added fresh gas with fuel treatments. ran
like a dream. for a day. yesterday i took it on a drive and had to grab some gas on the way into town.
10 minutes later i parked downtown, had dinner, then when i was leaving was having a really hard time
getting it going. it was dying in park which it wasn't doing before. before i could at least count on it to
run in park or neutral just not in gear (while stopped). got it going and it died while driving (i think my
foot was off the gas). finally got it home. started it this morning and i can't even get that sucker
running long enough to get it out of my driveway. what do i do? is this a case of bad gasoline or
something else? i'm at a loss. i don't have a lot of money so i'm trying to figure it out myself. all
suggestions welcome.

8 Answers


Have you tried to look at your idle air control?

i have not. will check that out. thanks!


And fuel pump, tbi has to be perfect or it throws a fit

1 of 1 people found this helpful.

Stuck EGR valves are common on early Gm's

1 of 1 people found this helpful.

Also true


Throttle position sensor


I had similar problems with an 85 Riviera. I changed the catalytic converter and it resolved my problems.

You need a new fuel pump and you will be o.k. Air bubbles are forming in the fuel pump as it becomes hot and the air bubbles prevent gas from reaching pistons. Get a new fuel pump and you will be ok.

Your Answer


Looking for a Used Riviera in your area?

CarGurus has 95 nationwide Riviera listings and the tools to find you a great deal.


Buick Riviera Experts

  • #1
  • #2
    Chris Kelley
  • #3
    Jason Zane
View All

Related Models For Sale

Used Cadillac Eldorado
316 listings starting at $1,700
Used Buick Regal
138 Great Deals out of 5,208 listings starting at $2,495
Used Chevrolet Impala
506 Great Deals out of 32,213 listings starting at $1,000
Used Chevrolet Camaro
374 Great Deals out of 31,404 listings starting at $3,495
Used Cadillac DeVille
1,413 listings starting at $1,899
Used Ford Mustang
344 Great Deals out of 41,936 listings starting at $1,488
Used Chevrolet Corvette
114 Great Deals out of 16,221 listings starting at $3,995
Used Chevrolet Monte Carlo
5 Great Deals out of 1,186 listings starting at $1,125
Used Buick Skylark
70 listings
Used Chevrolet Caprice
138 listings starting at $6,995
Used Buick Electra
11 listings
Used Pontiac Grand Prix
9 Great Deals out of 2,449 listings starting at $2,200
Used Buick LeSabre
5 Great Deals out of 1,492 listings starting at $1,299
Used Ford F-150
2,999 Great Deals out of 230,597 listings starting at $1,300

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.