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Buick regal 3.8l 3800 series 2 rough idle, almost stalls, surges forward

Engine has 89400 mi starting to rouugh idlealmost stalling,surges & engine sputters when starting.

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  • joe vanaman Sep 28, 2012

    THANKS FRANCISCO, THE PROBLEM WAS THE MASS AIRFLOW METER.THE PROBLEMS I MENTIONED WOULD NOT OCCUR ALL THE TIME.HOW I FOUND THE PROBLEM OUT WAS THE DIAGNOSTIC CODE (I HAD NO ENGINE LIGHT COME ON) ALL IS WELL SO FAR. I GOT AN AFTER MARKET MAF FOR $2II. 9/28/12 THANKS AGAIN, JOE V.

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  • Contributor
  • 24 Answers

Have u checked the idel air control selonoid otherwise could be a bad injector or fuel pressure regulator

Posted on Sep 26, 2012

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6 Suggested Answers

6ya6ya

6ya staff

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Posted on Jan 02, 2017

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Anonymous

  • 1 Answer

SOURCE: rough idle stalls at low rpm's

check your transmission fluid,the motor will stall when fluid is low

Posted on Mar 24, 2009

ilragatzzo78

francisco navarro

  • 241 Answers

SOURCE: mY car is a 1995

check your air mass meter or map sensor

Posted on Jul 09, 2008

Anonymous

  • 8 Answers

SOURCE: Car starts then stalls out...

could be to many thing to take chances with, but most commonly;fuel filter,gas line antifreeze or a crack in your air intake which would take your vacuum seal away, start with the least expensive and work from their. Worst case scenario pinched fuel line

Posted on Jan 19, 2009

scott

  • 532 Answers

SOURCE: My 1996 Ford F150 4.9l 5spd. rough idle, poor drivability, stall

try replacing the throttle position sensor

Posted on Oct 24, 2009

Anonymous

  • 1 Answer

SOURCE: 1992 LEXUS LS400 STALLS WHEN HOT & IDLE SURGING

Had same problem on 93 LS400, timing was off one tooth on left camshaft gear. Replaced belt and reset and no more problems. (Spent 1200.00 on repairs I did'nt need)

Posted on Feb 25, 2010

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1 Answer

Why does my 2003 buick regal ls stop ideling afer it warms up?


The automatic idle control valve may have stopped working or the control module that operates it.

May 17, 2014 | 2003 Buick Regal

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97 buick regal gs runs fine until warm then stalls and will start for more than a second. sometimes when i give it gas it will rev for another second then stall


When the engine warms up the engine computer goes into closed loop mode and relies primarily on the O2 sensors and the MAF sensor to calculate the correct fuel to air mixture - if one of the O2 sensors is fouled or the MAF sensor is not working properly, this can cause the problem.
Given the age of the car, I would also check the idle air control (IAC) and channels, the EGR valve and the throttle body for carbon buildup.

Apr 23, 2017 | Buick Regal Cars & Trucks

1 Answer

2002 buick regal runs rough and stalls


Having a qualified repair shop do diagnostic's on the vehicle would be your best bet . Could be any number of thing's ,engine mangement system sensor's , fuel system , ignition system , engine mechanical systems etc.... Could be as simple as just needing spark plug's & wire's , fuel filter . But , some testing should be done by a qualified technician with a professional scanner .You don't want to get into a guessing game , one person tell's you it's this or that , because without doing testing they are just guessing .
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Dec 10, 2017 | 2002 Buick Regal

1 Answer

I have a 1991 Buick Park Avenue. Runs rough in


Here are the common cause of surges, cold stalls, stalls at stops, slow idle speed, erratic idle speed, rough idle and engine hesitation (and other problems), it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours.
To correct this problem I want you to get a can of intake cleaner (ABOUT $5.00) from any local auto parts store like NAPA or Carquest, do not use carburetor spray, intake cleaner only or u will damage the Teflon coating inside the throttle valve and air bypass valve, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

May 25, 2010 | 1991 Buick Park Avenue

2 Answers

ENGINE IDLES ROUGH, BUT RUNS FINE WHILE DRIVING. My car is a 1995 Buick Regal Gran Sport with the 3800 series motor with 212000 miles. The rough idle tarted after driving through some muddy and wet roads


go the cheapest route. replace fuel filter and add SEAFOAM to tank of premiun fuel. replace filter before 500 miles. then add SEAFOAM to gas every 3000 miles to keep lines.engine,fuel pump, and emissions systems clean, ETHANOL problem number 3000

Aug 29, 2009 | 1995 Buick Regal

1 Answer

1997 skylark tries to stall on take off & idles rough, & misfire


Waited for engine to cool and checked all vacuum hoses and sensors, according to vacuum diagram and found a couple of dry rotted hoses. I replaced them and troubles went away.

Jun 13, 2009 | 1997 Buick Skylark

1 Answer

Low idle


Here is the most common cause of surges and stalls and low idle rough idle, it is the idle speed control air-bypass valve and throttle valve (IAC for short), they get full of gunk over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

Nov 30, 2008 | 2002 Buick Regal

1 Answer

Stalling


Here is the most common cause of surges and stalls, it is the idle speed control air-bypass valve and throttle valve, they get full of gunk over the miles and cause idle issues (stalls) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

Sep 23, 2008 | 1988 Buick Regal

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