1998 Buick Park Avenue Ultra Stalled on Road Today


Asked by Mar 03, 2014 at 06:16 PM about the 1998 Buick Park Avenue 4 Dr Ultra Supercharged Sedan

Question type: Maintenance & Repair

1998 Buick Park Avenue Ultra Supercharged drove fine to and from work today (about 20
miles each way).  Then with about a mile to go to home the car stopped running on the
road --- it just cut out.  It wants to turn over but can't/won't.  Seems to be related to one of
the pulleys (maybe).  Any suggestions even if it is something else that needs to be
checked?  Had it towed to a nearby mechanic to see what needs to be done.

6 Answers


These 3.8s are notorious for intake manifold gasket failure. Check the oil dipstick. Does it have white milky "goop" on it? If so it's possible that one or more of the cylinders has coolant in it causing the engine to hydrostaticly lock. You'll want to remove the spark plugs and try to crank it. If it cranks and coolant shoots out of one or more of the spark plug holes, that's what has happened. If you decide to fix it change the oil twice right after the repair. This is necessary to avoid a spun bearing from the coolant contamination of the oil. HTH. - Jim


Oil on dipstick looks clean/normal.

3 out of 3 people think this is helpful.

That's definitely a good sign! -Jim


I saw a video on youtube recently about a 2000 Grand Prix GTP (also a supercharged 3.8) that had locked up. In that case one of the crankshaft bearing cap bolts had come loose. This allowed the cap to swing away from the crankshaft and locked the motor. -Jim


Heard from the mechanic yesterday (Tuesday). Their initial feeling is that the supercharger blew and may have damaged the engine which is now making quite a bit of racket. They were able to take off all of the belts and get the engine running (although not as well as they would have liked). Originally, they thought it may have been the AC compressor or something like that. We will hear back from them today but it looks like we may have to scrap the car unless we want to put a new engine and a new supercharger in it which I don't think we are leaning toward doing. The nice thing is that we got this inexpensively a few years ago after a hail storm. It had almost no dents that were detectable but the insurance company totaled it anyway. It has 254,000 miles on it so I think we have done okay.

1 out of 1 people think this is helpful.

I see. I think you're right. Sounds like you definitely got your moneys worth out of it. Thanks for the update. - Jim

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