Getting EGR Code on 90 model. PCV Maybe?
Thread Starter
Instructor
Joined: Nov 2009
Posts: 155
Likes: 2
From: Columbiana AL
Getting EGR Code on 90 model. PCV Maybe?
We are getting an EGR check engine code on a 90 model.. Is it possible that a stopped up PCV valve could cause this? Or does this def mean the EGR valve is bad? I was thinking a vacuum leak could also be the culprit.. The code is intermittent. Fuel mileage seems low @ 21-22. All highway 60mph Baby footing it.
Thanks
Thanks
Burning Brakes
Joined: Nov 2004
Posts: 897
Likes: 12
From: Land of Whiskey Rebels, PA
I agree with WW7. If it rattles, it's good. I'd just go ahead and replace the EGR (I don't know of a way to test the EGR valve). Then erase the codes. Run it and see if it shows the EGR code, again. I would think a "bad EGR valve" would affect gas mileage. It's part of the pollution control system.
Use TWO wrenches on the EGR.
Use TWO wrenches on the EGR.
Instructor
Joined: Feb 2008
Posts: 177
Likes: 5
From: Toronto Ontario
Before replacing any parts verify the code and do a diagnosis to isolate the problem part.
If it is Code 32 it is associated with the whole EGR circuit not just the valve.
Code 32 could be
-EGR valve
-EGR solenoid
-the vacuum lines to in the EGR circuit
-the wiring to the EGR solenoid
-the park neutral switch
There are test procedures in the FSM to help isolate the problem.
If it is Code 32 it is associated with the whole EGR circuit not just the valve.
Code 32 could be
-EGR valve
-EGR solenoid
-the vacuum lines to in the EGR circuit
-the wiring to the EGR solenoid
-the park neutral switch
There are test procedures in the FSM to help isolate the problem.
Last edited by gmboileau; Dec 18, 2009 at 09:09 AM.
Burning Brakes
Joined: Nov 2004
Posts: 897
Likes: 12
From: Land of Whiskey Rebels, PA
gmboileau is right. There is more to it than just the EGR valve. That was the first thing I thought of. So, that came out of my mouth and a slice of "humble pie" replaced it. He's right.
Le Mans Master
Joined: Aug 2000
Posts: 8,838
Likes: 31
From: Australia
EGR operation is controlled by the computer ; PCV works all the time by engine vac
If engine is not getting to correct temp then it will affect lots of things as many engine functions are heat sensitive ; there are settings that turn on / off dependent apon engine temp
Team Owner
Joined: Jan 2009
Posts: 73,568
Likes: 33
From: Somewhere in Mo
St. Jude Donor '09-'10, '14
The EGR, so I have read, is a trouble spot with the 90. As a matter of fact I just read that today, but don't recall where.
but go with a whole diagnosis as stated above and don't just assume it's the EGR valve itself.
but go with a whole diagnosis as stated above and don't just assume it's the EGR valve itself.
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Instructor
Joined: Feb 2008
Posts: 177
Likes: 5
From: Toronto Ontario
[QUOTE=rodj;1572487627
If engine is not getting to correct temp then it will affect lots of things as many engine functions are heat sensitive ; there are settings that turn on / off dependent apon engine temp[/QUOTE]
If engine is not getting to correct temp then it will affect lots of things as many engine functions are heat sensitive ; there are settings that turn on / off dependent apon engine temp[/QUOTE]
