Question about 1992 Cadillac Brougham

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Egr valve Stopped up

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Then buy a new one and replace it

Posted on Nov 29, 2015

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Posted on Jan 02, 2017

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1 Answer

How do you clean a PO400 code on a nissan frontier 2002


That's going to be an EGR code. More than likely your EGR valve is either clogged with carbon buildup or it stopped working altogether.
Another culprit could be the EGR solonoid but most likely its the valve itself.

Aug 30, 2014 | Cars & Trucks

1 Answer

What is the safest Removal and cleaning of egr valve on a 1999 lincoln continental?


Doubtful. The EGR valve only opens when you are going 40+ m.p.h. and not accelerating. The EGR valve is normally CLOSED at idle and, when it does not seat correctly, it usually just causes the vehicle to idle rough. If it becomes stuck open, it will invariably cause your CHECK ENGINE light to come on (there is a position sensor).
You can use regular penetrating oil (WD-40) to clean and lubricate the EGR valve and see if that helps, but a more likely suspect is your THROTTLE POSITION SENSOR or your IDLE AIR CONTROLLER.

Aug 07, 2014 | 1999 Lincoln Continental

1 Answer

95 cougar 4.6l wont pass emissions heavy smoke out tailpipe but runs fine spark plugs are new,no misfires, rechecked plugs and are not oil or fuel soaked. all fluid levels are staying the same. have egr...


YOUR EGR VALVE IS A PRESSURE FEED BACK ELECTRONIC VALVE.IF YOU USE A HAND VACCUM PUMP AND PUMP 5 HG TO EGR VALVE THE IDLE SPEED IS NOT SUPPOSE TO DROP AND ENGINE SHOULD NOT STALL OUT,YOUR EGR VALVE PAST THE VACUUM TEST.PROBLEM COULD BE PRESSURE TRANSDUCER OR THE EGR VALVE INTAKE PORT HOLES WHERE EGR VALVE SIT IS STOPPED UP WITH CARBON.CLEAN CARBON HOLE IN THE INTAKE WHERE EGR VALVE MOUNT TO.YOU CAN USE SMALL SCREW DRIVER OR PIECE OLD CLOTHES HANGER SEE WHAT HAPPENS.

Oct 12, 2011 | 1995 Mercury Cougar

1 Answer

Got a 2001 Ford Taurus with 128K miles, engine was rebuilt 10 months ago, for the last 4 months it has been chugging or hesitating when I'm stopped at a light, Autozone codes said egr pressure sensor,...


Sounds like the egr solenoid stuck..Not the valve..When you are sitting at idle,,you should be able to take off the vacum line and there should be no vacuum..,If there is back track that line and see if it goes to a solenoid..I bet the vacuum lines are crossed..One should have vacuum,,the other should go to the egr valve..If they are crossed on the egr solenoid,,then you end up with constant vacuum going to your egr valve..Until you figure it out leave the line off the egr valve and block the line..If you are constantly haveing the valve held open,,you killing sparkplugs and the catylitic converter

Oct 04, 2011 | 2001 Ford Taurus

1 Answer

Code says bad egr valve replaced still throws code


V6? 4cyl? what is the code? there is no code that says "replace egr valve", the passages may be stopped up. open the egr valve manually (a scanner may be able to do thiis) and see if the engine idles rough or stalls out (it should if passages are flowing) if not you need to take valve off and clean the EGR passages. If you cant open the valve, take it off, one hole is exhaust. the other will be vaccuum, from the intake manifold. A bad map sensor could also cause a egr malfunction code.

Sep 14, 2011 | 1999 Isuzu Rodeo

2 Answers

1994 CHEVY C1500 WITH HIGH NOX. I CAN NOT PASS THE INSPECTION.


SOUND LIKE EGR VALVE NOT WORKING NOT OPENING UP OR EGR VALVE PORT STOPPED UP WITH CARBON BUILD UP NEED TO BE CLEANED OUT.SCAN VECHICLE SEE IF EGR WORKING OR YOU HAVE FAULTY PCM.

Jan 09, 2011 | Chevrolet C1500 Cars & Trucks

1 Answer

Egr failier,replaced censer and valve what next


Remove the EGR valve and look in the ports in the intake. There is a good chance they are stopped up. Good Luck.

May 06, 2009 | GMC Sierra 2500 Cars & Trucks

1 Answer

Ecm codes 32 & 53


Problem Description: Code 32 means that the EGR diagnostic switch was not detected closed under the following conditions:


  • Coolant temperature greater than 80 C (176 F).
  • EGR duty cycle commanded by the ECM is greater than 50%.
  • Manifold pressure less than 25 kPa, (7" vacuum).
  • All conditions above must be met for about 8 seconds.


Diagnostic Aids: A Scantool can be used to check the diagnostic switch circuit. The Scantool should display "on" when vacuum is applied to the diagnostic switch. The switch should also be indicated as being closed whenever the ECM is commanding an EGR duty cycle of greater than 50%. EGR duty cycle can also be monitored by a Scantool.



"Scan" Diagnostics: Before using this test, check for ported vacuum to EGR solenoid, also check hoses for leaks or restrictions. There should be at least 7"hg vacuum at 2000 rpm.
Disconnect EGR solenoid vacuum harness. Rotate harness and reinstall only the EGR valve side. Ignition on, engine stopped. Install a hand held vacuum pump with gauge to mainfold side of EGR solenoid. Apply vacuum and observe EGR valve, the valve should not move.
Valve does not move Valve moves

Apr 28, 2009 | Oldsmobile Cutlass Supreme Cars & Trucks

2 Answers

Code P0404 Exhaust Gas Recirculation Control Circuit. How Do I g?


It could be that your EGR port is stopped up with exhaust (soot). There is usually no adjustment on an EGR valve. I would remove the EGR valve and check the port. If it is clogged up I would use carb cleaner to clean the EGR port.

Good luck

Jan 06, 2009 | 2005 Dodge Caravan

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