Question about 1995 Buick Riviera

1 Answer

95 riviera 3.8 supercharged wants to surge up and down constantly at idle, but runs well at 1000 rpm and up, also seems to have a slight rattle in supercharger

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    President:

    An expert whose answer got voted for 500 times.

  • Master
  • 1,509 Answers

Yeap your describing a supercharger bearing failure it'll lock up after a while, It can be rebuilt with new bearings but the directions aren't known to me as I've just replased the whole unit. The intake and waste gate gaskets van blow too and you can find the leak with wd-40 or carb spray as when you hit the leak it'll change the way it runs. You may also need to remove the crankcase vents and stop them up to see if you have a leak to the crankcase ( intake gasket leak) The normally assperated engine did this quite alot but theirs few less supercharged ones and I've only changed blown bolwers that won't turn and the cases were so scared up that they could'nt be rebuilt. Oriley shows a unit in thier Knoxville warehouse and it's rebuilt. Find the rattle and fix it and you'll save a ton of money as the repair may seem expensive but the new charger will set you back much more and the work is about the same.

Posted on Mar 16, 2011

  • alogeetaylor
    alogeetaylor Jan 26, 2012

    its a coupler in the supercharger go on youtube and they show u how to replace it. its a easy 123 step

×

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

2008 ford ranger 2.5, what could be the problem if engine starts normal but after second the engine fluctuate?


Bleeding the fuel system is typically only needed on high pressure systems like GDI and Diesel vehicles, and only to get them to start if they run dry once.
If your engine keeps running but the idle speed moves up and down there are many things that can cause that. More information is always helpful. Does it always do it whenever the car is running? Or does it only do it conditionally (IE Only when 1st started in the morning, only after warmed up or getting off the dreeway, only with AC on or at night...describe as much as you can.)
Most newer cars have computer controlled idle strategy that wants to idle the car cold around 1000-1500 rpm (After an initial higher rev called a FLARE) and then bring it down in 3 or 4 minutes to 700ish rpm. If it CANNOT bring it down by normal means, then many resort to something called FUEL CUT IDLE where it actually turns off the fuel momentarily and the RPM will drop because the car is stalling and running out of gas...then back on and it starts to rev back up and when it gets too hiugh it turns back off. Cars that do this can have annoying surges from 500-2000 back and forth at idle forever.

a vacuum leak or MAF meter problem can cause rough idle. ALmost any engine code that turns on CHECK ENGINE lamp may be suspect, does it have any current fault codes?

As well, consider Sticking manifold runners, EGR systems, and temperature sensors all can cause surging, so can a defective Oxygen sensor, slightly jumped timing, and dirty throttle plates the ECM wants to close more but they wont due to dirt. If its not something fairly obvious, it may require deeper checking.

Jan 29, 2015 | 2008 Ford Ranger 2.5

1 Answer

1997 acura cl 2.2 revs up to 1500 rpm and down to 1000 rpm just several seconds after start


Cars are design to run at a higher idle at start up to warm them up quick. There is a sensor that reads water temperature and tells your car's computer how fast to idle. Your RPMs seem slightly high but not out of the norm. Does idle ever drop to around 600/800 after about a minute? If not, your engine temperature sensor maybe defective.

Mar 16, 2014 | Acura Cars & Trucks

2 Answers

95 buick riviera supercharged smells like gas from the rear and the car takes awhile to start when cold....please help


there maybe a leak in the fuel line and it is not getting enough pressure any gas (fuel) smells at rear should be check as soon as found. check fuel lines on top of tank, they the first point to split. also at any joint that is metal in the fule line.

Oct 11, 2013 | 1997 Buick Riviera

1 Answer

1991 Saturn SL SOHC has two strange conditions that I can't figure out. First, the car seems to have a slight but constant acceleration at any speed under 30mph, and second, when you put the car into...


the idle air control valve can cause the symptoms your describing and it may not set a trouble code have it replaced and see if that repairs your issue

Jan 18, 2010 | 1991 Saturn SL

1 Answer

1995 riviera supercharged with 91000 miles has a


check compression possible burnt valve check fuel pressure check ignition componants

Jul 10, 2009 | 1995 Buick Riviera

1 Answer

R&R Super Charger Gasket


not hard....the supercharger is basically a simple component.....there is an aftemarket company offering repair parts a lot cheaper than the dealer...sorry don't remember their name....

Jun 08, 2009 | 1995 Buick Riviera

2 Answers

Rough idle / engine surges until power is applied


Sounds like a possible vaccume hose leak?

Feb 07, 2009 | 1997 Chevrolet Astro

2 Answers

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.......!

Jan 27, 2009 | 1995 Buick Riviera

Not finding what you are looking for?
1995 Buick Riviera Logo

646 people viewed this question

Ask a Question

Usually answered in minutes!

Top Buick Experts

yadayada
yadayada

Level 3 Expert

76109 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8269 Answers

Are you a Buick Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...