Question about 1991 Oldsmobile Ninety Eight Regency

3 Answers

My 91 oldsmobile 98 runs rough in idle but when driving run smooth.

Posted by on

3 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Oldsmobile Master
  • 14,036 Answers

ROUGH IDLING CAUSED BY VACUUM LEAKS AT VACUUM HOSES OR INTAKE MANIFOLD VACUUM LEAK.DIRTY INJECTORS.WEAK FUEL PRESSURE EGR VALVE STUCK OPEN.

Posted on Aug 29, 2010

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Oldsmobile Master
  • 6,826 Answers

Rough idle is a very common problem on 4 cylinders, but I believe the 98 Regency has a 6 cylinder in it, right?

Sometimes the coil packs get iffy, and sometimes the EGR Valve gets a leak in it causing a rough idle.

When the accelerator pedal is depressed, it can change things so that the engine seems to run smoothly.

However, I would look for codes to see if anything intermittent is occurring in the engine that may need attention.

The OBD-I scanner can help to diagnose the problem, if anything is out of specifications on the engine in question.

The owner will have to find a technician that has such a scanner.

Posted on Aug 29, 2010

  • Level 1:

    An expert who has achieved level 1.

    Mayor:

    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 9 Answers

Would you rather it run rough on the freeway and smooth at idle? It's a 91 Oldsmobile. If it gets you to your destination, I'd celebrate.

Posted on Sep 28, 2011

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

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

98 cadillac sls idling rough


try your ful injecton you mite have a injector clogged up try seafome it mite work cant hert to try

Apr 20, 2013 | Cars & Trucks

1 Answer

My 91 Chevy s-10 2 wheel drive p/u w/2.5 four cylinder wont idle and runs rough when i rev the motor which the only way i can keep it running is to feather the throttle. If i unplug the vacuum to the


the problem if from the map sensor.. when you change it it will run rough and keep cutting off,, keep stating it back and reeving over and over as soon as it cuts off again keep repeating until the CPU gets calibrated with the new sensor and it starts idling smoothly..

Dec 30, 2012 | 1991 Chevrolet S-10

1 Answer

Hey , i have a 1998 oldsmobile intrigue , let me start off by saying what a joke of a car . i really like the car , its in good shape , has all options, fully loaded, tranny is on its way out and now the...


Take the EGR Valve off and clean it with a non-chlronated brake cleaner and a wire brush.Sounds like the EGR Valve is stuck in the open position this will make the motor idle rough but running over 45 mph its smooth.

Apr 29, 2011 | Oldsmobile Intrigue Cars & Trucks

2 Answers

Son let his car run out of gas, and when he filled it this code appeared with rough idle and stalling code 2002


I had a something similar to this happen to a girlfriend of mine. She has a 98 escort and it ran out of gas and the service engine soon light came on after she filled it up. If this is what your talking about check your owners manual. Most of the time if there is really nothing wrong with car you can drive it around ( Generally 20 min in town and 10 on the hwy with 4 idle periods (4 times of the engine being at idle) - do not cut engine off) and the light will go off. The rough idle code most likely happened when the engine ran roughly because. it was running out of gas.

Jan 26, 2011 | 2002 Dodge Durango

1 Answer

1994 nissan altima rough idol when stoped runs


My 1994 Altima has always had rough idle but runs smooth. I now have 176,000 miles on it and drive it daily. Best car I ever owned. I wouldn't let the rough idle bother me.

Jul 28, 2010 | 1994 Nissan Altima

1 Answer

My 1995 oldsmobile royale runs rough idle and smooth acceleratde. whats up with that help!!!


you can try some a petrol fuel agent that clean the jets while drive, you will see lots of smoke iniitially but this will clear up. I a grease lighting component which you can purchase online for $10.00.

Oct 16, 2009 | 1995 Oldsmobile 88

1 Answer

Running roug at low idle, smooths out at 2500 rpms


change plug and wire if its been a while most cars have 90000 miles platinum plugs in them.but the wires wear before plugs.so change plugs and wires.+clean fuel injectors .change fuel filter and air filter.if car still run rough your idling to low.have idling check .

Jun 06, 2009 | 2001 Oldsmobile Alero

1 Answer

2001Pontiac Grand Am Rough Idle In Drive Only


I had the same problem with '99 GA I changed the idle control valve , solve the problem

Mar 23, 2009 | 1999 Pontiac Grand Am GT

Not finding what you are looking for?
Cars & Trucks Logo

745 people viewed this question

Ask a Question

Usually answered in minutes!

Top Oldsmobile Experts

yadayada
yadayada

Level 3 Expert

75807 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22133 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8172 Answers

Are you an Oldsmobile Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...