Question about 1995 Buick Regal

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3.8L BUICK REGAL IDLE WONT KICK DOWN IN PARK OR IN GEAR CHECKED VACCUM LINES & INTAKE GASKET 4 LEAKS ALL LOOKS GOOD ANY SUGGESSTIONS

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  • Buick Master
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If you know for a fact you have no vac leaks, the next step would be to check the idle air control valve. It should be mounted in the throttle body. It could be stuck open.
The computer controls idle speed by regulating air flow into the throttle body.
The throttle plate could also be stuck open. An eighth of an inch would do it. Make sure the throttle and cruise control cables are not pulling on the throttle plate.
Vac leaks could include the PCV valve and the EGR valve.

Posted on Jan 12, 2013

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 625 Answers

SOURCE: 1995 buick regal custom missing

you might have bad plug wires replace wires and saprk plugs

Posted on Jun 09, 2008

emissionwiz
  • 75051 Answers

SOURCE: 1995 Buick Lesabre custom stalling and idle

did you clean the idle speed control air bypass valve?, u do this by spraying carb spray into the intake while the engine is held at hi idle so it won't stall, use up about half the can, then shut down and disconnect battery for 5 minutes to reset system idle learn, drive the car for a few days and let me know if the problem is fixed.

Posted on Mar 24, 2009

daves944
  • 1050 Answers

SOURCE: Buick Regal dying

You have a problem in the fuel pump relay circuit for sure then. I'm betting the relay, but it could be that dropping resistor.

Posted on May 11, 2009

  • 232 Answers

SOURCE: 1996 buick regal 3.8L. Rear brakes loud thumping

Check for leaks in the brake lines and calipers or brake cylinders. If leaking have it repaired right away its not safe. Change the brake fluid, take the old fluid out add new fluid or have it professionally done.

Posted on May 13, 2009

keithheavili
  • 410 Answers

SOURCE: 2003 Buick Regal Service Engine Soon light.

The error that I'm showing for error code P1133 is 
P1133 Heated Oxygen Sensor (HO2S) insufficient switching bank 1 sensor 1(Rear Bank).  I would suggest having both of your Oxygen Sensors replaced if you haven't already had that done.  Hope this helps.  Thanks for an honest rating and for using FixYa.

Posted on May 19, 2009

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When I start My 1998 buick regal ls 3.8 it idles rough and stalls most of the time, the rpm's go up and down as soon as I let go of the key. If I step on gas for a few seconds it stays running. Motor


did you clean any carbon from the air intake and air passages around the idle control motor. carbon buildup around fuel injectors or intake manifold can cause this problem also.

Sep 20, 2014 | 1998 Buick Regal

1 Answer

1995 3.8L BUICK REGAL ENGINE REVS HIGH 3000RPMS IN PARK OR GEAR


Good guess if it's not vacuum, it may be the intake manifold gasket allowing too much air into system. Easy teats to check is to spray some engine cleaner, or brake cleaner [ WD40 works too ] directly where the intake manifold bolts on. Making sure you are spraying the gasket. If gasket is bad, you will hear the idle go down or up. Any change at all tells the tale. . Be sure not to spray the exhaust manifold, just the intake manifold. This is the best test to perform Saves time and money. Let me know how you make out. PS Also spray vacuum hoses with the cleaner. Listen to motor at the same time
let me know how you do

Jan 12, 2013 | Buick Regal Cars & Trucks

1 Answer

What is a vaccum leak on a 1999 buick regal


All engines have vacuum created in the intake manifold, because the pistons are pulling in air into the cylinders from the intake manifold, resulting in a pressure drop in the intake. A leak is caused when the intake manifold gasket is bad, or when a vacuum hose off the intake becomes disconnected or breaks. The hose will then **** extra air into the intake, causing a higher than normal idle, maybe a rough running condition, and can be identified by a slight whistling noise at the break or at the disconnected end of the vacuum hose.

Feb 20, 2012 | 1999 Buick Century

1 Answer

Lean fuel trouble code


When a lean emisson code is present it basically means that the engine is getting to much air and not enough fuel, start checking the basics, look for vacumm lines that may have popped off or deteriorated vacumm lines allowing extra air to enter the intake system, next check your intake manifold gasket, you usually could check this very easily get a can of carb and choke cleaner and spray it all around where the intake meets the cylinder head if the engines idle increases or it starts to have a rough idle the intake manifold gasket is bad and should be replaced with a new one.....

Dec 08, 2010 | 2004 Buick Regal

1 Answer

2002 Jeep Grand Cherokee Limited 8L, engine revs while driving, especially on long road trips


THE FIRST THING IS TO HAVE THE COMPUTER SCANNED FOR CODES, THESE CODES WILL HELP IN FINDING PROBLEM, ALSO CHECK THE IDLE AIR CONTROL VALVE, AS THIS VALVE CONTROLS THE IDLE AND GOES BAD OFTEN. AND LAST TAKE A GOOD LOOK AT VACCUM LINES FOR LEAKS, MOVE THEM AROUND AND LISTEN FOR A HISSING NOISE. GOOD LUCK.

Apr 28, 2010 | 2004 Jeep Grand Cherokee

1 Answer

Trouble with idle


This is a vacuum leak problem, when your engine surges. To make sure that this is correct spray either where all vacuum leaks can occur

1) Vacuum Lines
2) Lower Intake Gasket
3) Upper Intake Gasket
4) Head Gaskets

Apr 05, 2010 | 1995 Buick Park Avenue

1 Answer

ENGINE IDLEING VERY HIGH IN PARK, WHEN IN GEAR TRANS DOSE NOT SHIFT GEARS


sounds like two problems 1 engine can idle high with vaccum leaks or bad idle air control or maf sensor 2 if trans wont shift in to gear fluid first next would be to tcm or wire connection on trans good luck

Dec 30, 2009 | 1993 Chevrolet K1500

3 Answers

Idle too high


have you tested the intake for vacuum leaks?

Aug 04, 2009 | 1993 Mercury Cougar

1 Answer

MIL on with a trouble code of P0174


CODE 174 IS BANK TWO FUEL SYSTEM LEAN.IF U HAD A FUEL PRESSURE ISSUE U WOULD HAVE A CODE 171 ALSO(BANK 1 LEAN)CK FOR A VACUUM LEAK AT THE INTAKE MANIFOLD GASKET(SPRAY CARB CLEANER WHERE MANIFOLD MEETS THE HEAD)IF THE IDLE PICKS UP THE GASKETS ARE BAD.SOMETIMES THE GASKETS GO BAD INTERNALLY.U CAN SPRAY CARB CLEANER IN TO THE OIL FILL HOLE.IF IDLE PICKS UP INTAKE GASKETS ARE BAD.GOOD LUCK

May 01, 2009 | 1999 GMC Denali

2 Answers

Engine runs very sluggish at start up


Change fuel filterS...plural
Don't forget the big canister unit under (next to wheel well)

Dec 17, 2008 | 1995 Buick Park Avenue

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