Question about 2001 Mercury Cougar

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Problem with the egr valve being clogged need help put new one on and it says still blocked

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  • justin smits May 11, 2010

    What is saying its blocked?

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Sound slike the egr passages are clogged take it off get the carbon out unless it is like the fords and has a egr selonoid or a dpfe. You said it says blocked it would be easier to assist you if you posted the code number that told you blocked.

Posted on May 06, 2010

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Posted on Jan 02, 2017

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2 Answers

EGR Valve keeps blowing out and no power


EGR valve blow-out can be caused by a clogged catalytic converter. A clogged cat. converter will cause pressure to back up in the engine. A test to perform is remove the front oxygen sensor from the exhaust to see if the engine runs better. Removing the oxygen sensor will relieve the pressure if, in fact the cat. converter is clogged. Another cause for EGR blow-out could be that the timing has jumped.The timing can be checked to diagnose this issue.

Mar 28, 2014 | 2003 Mazda Tribute

1 Answer

96 cutlass supreme will not pass emission in ut. what should I do? KOER failed, trouble code po401


cleanout egr valve and troutle body . Or replace egr with new one, clean, check vacumm lines , check for clogged check , depending on modle of car you can pippoint problem as some have a common part problem depeding with make of car. But all have to do with exaust system. Insufficient flow exaust flow. Im not an expert, all I know it is related to this, I have it myself so im googling it.

Ford EGR valve

The OBDII fault code P0401 means that the engine computer has detected that the Exhaust Gas Recirculation (EGR) system flow is insufficient. Read more how the EGR system works below. What could cause the code P0401 - clogged or restricted EGR passages
- faulty EGR valve
- EGR valve stuck closed
- problems with the DPFE sensor (Ford)
- problems with hoses to the DPFE sensor (Ford)
- problem with the EGR vacuum switching valve (Toyota)
- clogged catalytic converter
- carboned up EGR temperature sensor
- vacuum supply issues at the vacuum-operated EGR valve
- electrical problems with the EGR valve control circuit
- engine computer problems
helpful website helps you with pinpoint and sou;ution related to auto make and model shows you most common cause of code reading.
www.samarins.com

Apr 16, 2013 | Cars & Trucks

1 Answer

Egr code wont clear it says not complete put a new one on still same problem


If the passages the valve is bolted to are still clogged up with carbon deposits, the egr valve won't work right. Did you verify the passages into the engine block are clear?

Dec 10, 2011 | Cars & Trucks

1 Answer

Egr valve clogged - will not idle correctly - possible vacuam leak


take EGR valve off and make a full gasket with a coca cola can so it blocks the valve off completely this will eliminate any problems ,did cars years ago have this valve?? no they didnt just block it off and it will run like a dream

Feb 21, 2011 | 1994 GMC Suburban

1 Answer

Check engine code 2001 ford taurus p0401


usually caused by clogging or bad valve. Valve can fail by clogging, torn diaphram, or bad/loose vacuum actuation hose.

Exhaust gas recirculation (EGR) system - insufficient flow detected

Causes: Hose leak/blockage, basic setting not carried out (if applicable), wiring, EGR valve, EGR solenoid, ECM


Your EGR valve should be on top of the engine in the front between the intake manifold and the pulleys. It looks something like this:


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First, make sure the vacuum hose is good and run it down to where it connects to the intake manifold to check for any leaks. If that's good and you want to get your hands dirty, take the valve off and see if it's clogged. clean it and see if you can actuate it with vacuum (put a vacuum hose on it, ****, and see if it will open. Also, look to see if there is gunk in the line and intake where it connects. Clean out anything you can with carb cleaner.
If you can get it unclogged and the valve is working, put the valve back on with a new gasket, else buy a new one ($40 at autozone :o( ). If you solve the issue, the engine light should clear after a couple hours of driving. OK?

Oct 16, 2010 | 2001 Ford Taurus

1 Answer

I have a mitsubish montero and keep getting code 401 after putting in a new egr valve I have also replaced O2 sensors and cannot figure out why the code keeps coming up


make sure egr passage way from valve to intake not clogged and make sure exhaust to egr supply is present and make sure if valve is vacuum operated that senser is ok and vacuum supply correct if electial egr senser then intake probably clogged sense code 401 is insuffence egr flow

Mar 14, 2010 | 2002 Mitsubishi Montero Sport

3 Answers

EGR problem on 2001 Camry??


Replace filter in EGR Modulator located to the left of EGR valve.
How do you clean the intake port below the EGR valve?

Sep 30, 2009 | 2001 Toyota Camry Solara

3 Answers

Code on diagnostics p0401


Code on diagnostics p0401:

What is going on?
Exhaust Gas recirculation low flow detected means that: there is vacuum problem in the EGR system - between the combustion chamber, EGR valve (mechanical - blown up diaphragm or clogged airlets/hoses) , EGR Modulator Valve (mechanical - blown up diaphragm, dirty EG/air filter or clogged airlets/hoses) and Vacuum Switching Valve ((mechanical - blown up diaphragm or clogged airlets/hoses OR electrical - VSV not properly synchronizing with the ECM, for instance).

Effects?
This causes the combustion chamber temperature to increase and produce Oxides of Nitrate (NOx) that is out of an acceptable emission range. This triggers the Malfunction Light (check engine light) to stay on (after a couple of driving cycles)!
Solution: Focus on EGR airways (hoses...) and organs (EGR valve, EGR Modulator, VSV), clean, check or replace the defected one. VSV seems to be criticale as it plays electrical & mechanical function. Once the repair is done, Clear the P0401 code using an OBII scanner.

Dec 21, 2008 | 1996 Lexus LX 450

1 Answer

My compression is a little off at full throttle, I think it might be either that my car is in need of a valve adjustment, my throttle needs to be cleaned, or there is something blocking the right amount of...


clean your throttle body with some carb cleaner and then check your egr valve it may be clogged as well if it is take it off and clean the bottom hole where the egr seats it fills up with carbon deposits and blocks the flow also the egr valve may be clogged as well so clean it out iwth carb cleaner or soak in some gas so it can breakdown the carbon deposits it may have built to the point where it cause the valve to stay stuck open or closed.

Jul 21, 2008 | 1994 Volvo 850

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