P1404 code set on 2000 Montana

JP

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#1
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MAKE:pontiac
MODEL: Montana
YEAR
: 2000
MILES: 125K
ENGINE
: 3.4l
DESCRIBE ISSUE....

Trouble code P1404 EGR valve? Stuck, perhaps? dying? Can I clean the pintle?
 
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#2
yes you can check for an obstruction keeping it open...
if you have a scanner we can command the EGR open and closed to observe position


DTC P1404 Exhaust Gas Recirculation (EGR) Closed Position Performance
 

Gus

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#3
There was a recall long ago for this....doubt it's still active.......can try removing the EGR and cleaning it....could be some carbon under the pintle...replace gasket and re-install EGR....cler codes with a code reader and hope for the best...
 
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#4
As frugal as I am and for around 50 bucks, I would replace it, 125K is a lot of miles for an EGR valve. And if it fails, can cause a lot a engine damage.



Some run around 200 bucks, this hurts.
 

JP

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#6
Can you get away with taking it off, cleaning it and replacing it without buggering up the gasket? (I'm not THAT cheap, but wondering if the gaskets are stout enough to reuse)

And...can a dirty EGR valve cause intermittent rough idle (every few minutes a momentary dip in RPM)?
 
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#7
Can you get away with taking it off, cleaning it and replacing it without buggering up the gasket? (I'm not THAT cheap, but wondering if the gaskets are stout enough to reuse) Maybe yes, maybe no, depends on it and you.

And...can a dirty EGR valve cause intermittent rough idle (every few minutes a momentary dip in RPM)?
yes it can
 

JP

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#8
I didn't have any more codes set, but it sounds like replacing it is a very good idea.