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Where is the egr valve on 91 Buick Regal 3.8 - Buick Cars & Trucks

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where is the egr valve on 91 Buick Regal 3.8 - 26407506-s101zg44eny3r1fvelmgmeba-5-0.png

Posted on Dec 20, 2016


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91 buick regal. fuel coming out of throttle body when turning over the motor

Has throttle body been rebuilt? What about the gaskets/seals? are they new, (incl base gasket)? Also check throttle valve shaft for leakage between throttle body and shaft.

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I have a 99 century custom where is the dpfe located

There is no DPFE (Dual Positive Feedback EGR) sensor on a buick. Ford is the only manufacturer that uses them. Your vehicle has an EGR valve that has a position sensor built into it. On the 3.1 liter the EGR valve is mounted on the drivers side of the engine just to the back of the throttle body. It will be round in shape, held in place by two bolts and have either a four or five wire connector.

Sep 17, 2011 | 1999 Buick Regal

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My 95 buick reagal is running real ruff. One day I drove it to work with no issues and when I got off I started it to go home and it was real ruff. I almost had it floored to get on the high way. I checked...

Priority Action Part Type Cause
1 Inspect Catalytic Converter Clogged or Faulty Catalytic Converter.
2 Inspect Piston Ring Set Worn or Broken Piston Rings.
3 Inspect Distributor Worn, Damaged or Faulty Distributor.
4 Inspect Distributor cap/rotor Worn, Burned contacts

Priority Action Part Type Cause 1 Inspect EGR Valve Improperly Functioning or Faulty EGR Valve. 2 Inspect Fuel Filter Clogged or Dirty Fuel Filter. 2 Inspect Fuel Injector Dirty or Worn Fuel Injectors. 3 Inspect Radiator Cooling at System Clogged. 4 Inspect Timing Specification Incorrect Ignition Timing. 6 Inspect Coil -Ignition- Faulty Ignition Coil.

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Where on engine is egr valve? 91 buick pa 3.8lt

It's a bellows shaped diaphram with a vacuum hose fittedto it . Usually rear of manifold (intake)

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I have a 99 Buick Regal GS, engine will start and run for few seconds then it will die.

I had a similar 98 regal GS did the same. There is a two stage fuel pump resistor located in the right inner finder. It was corroded and open. The fix requires relocating new resister on firewall. Fix was $165.00 + tax to my mechanic and runs like new now. Hard to diagnose problem per mechanic.

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1984 buick regal 3.8 carbed v6. Intermittent

Sounds like a bad wiring connection in the egr circuit.

Mar 03, 2010 | 1984 Buick Regal

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1991 Buick Regal dies when warms up.

Sounds like a vacuum leak crank sensor fuel pump stuck EGR valve

Feb 07, 2010 | 1991 Buick Regal

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91 buick idles up and down after it watms

Check the Throttle Position Sensor and Egr vavle. Look closely at all vaccume lines and check for cracks, breakage and colasping lines.

Feb 07, 2010 | 1995 Buick Regal

1 Answer

I have a 1991 buick regal stalls and shut off after warming up

egr valve is not opening up when the engine reaches it normal operating temperture

Feb 07, 2010 | 1991 Buick Regal

1 Answer

How do I locate and replace EGR valve?

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1. Turn OFF the ignition. 2. Disconnect the EGR valve electrical connector 3. Remove the bolt retaining the pipe assembly from the EGR valve and carefully pull the pipe assembly back. 4. Remove the EGR valve retaining bolts. 5. Remove EGR valve assembly. 6. Remove the gasket. INSTALLATION PROCEDURE
Install the EGR Valve with a new gasket to the intake manifold. NOTE: Refer to Fastener Notice in Service Precautions.
2. Install the bolts through the EGR valve. Tighten Tighten the bolts to 30 N.m (22 lb ft) 3. Connect the pipe assembly to the EGR valve. 4. Install the bolt. Tighten Tighten the bolts to 30 N.m (22 lb ft) . Connect the EGR valve electrical connector.

Jan 30, 2010 | 2001 Buick Regal

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