02-07-2008, 11:07 AM
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#1
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636 whp
Join Date: Aug 2006
Location: AZ
Posts: 11,876
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P0401
Mom's Pontiac Montana's got a problem again, throwing a P0401 code again (which it put out among others when the head gasket leaked/blew. P0401 is supposedly insufficient exhaust gas flow, or a problem with the EGR. How hard is it to replace the EGR valve/unit on the 3400? I get to do it this weekend if that's the problem.
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02-07-2008, 11:49 AM
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#2
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GLS member
Join Date: Jul 2004
Location: Where you should be
Posts: 5,577
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Is it the Special Edition Pontiac Hannah Montana?! 
Seriously tho..
Should not be too bad
As far as installation of the EGR valve is concerned, you will locate it on the intake manifold
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Please don't be offended by my comments because that would break my effing heart you kitty.
Have a good day 
Last edited by AGT : 02-07-2008 at 11:54 AM.
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02-07-2008, 01:14 PM
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#3
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636 whp
Join Date: Aug 2006
Location: AZ
Posts: 11,876
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EGR isn't even necessary, is it? It not functioning will only piss off California. Couldn't we just say screw it and let it be? I've read around other forums who have just let it go and everything's fine.
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02-07-2008, 01:46 PM
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#4
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GLS member
Join Date: Jul 2004
Location: Where you should be
Posts: 5,577
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Well think of it in terms of pissing off California and your vehicle computer. I know people say computers are not tempermental but just let an error code ride for a while and your car might give you more problems than before.
But you are right. The EGR is not as necessary as say your camshaft position sensor but...
__________________
Please don't be offended by my comments because that would break my effing heart you kitty.
Have a good day
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02-07-2008, 04:46 PM
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#5
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GLS member
Join Date: Jun 2004
Location: New Prague, MN
Posts: 2,481
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you can let the code ride for a while but that light would piss me off after a bit. It is easy to change, two bolts from the egr to the uim and one bolt from the egr pipe to the unit itself. Be extra careful when the pipe comes in and out of the egr as it is very thin and can bend easily which will make it a huge pita to put back in the hole on the egr. Other than that it is easy.
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03-16-2010, 09:44 PM
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#6
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GX Member
Join Date: Dec 2009
Location: Las Vegas, Nevada
Posts: 142
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I know the thread is old, but I wanted to add this for anybody who searches for this thread in the future.
If you replace the EGR and still have the light come on, watch the following video and instructions related to the P0401 code..
http://www.explorerforum.com/forums/...d.php?t=261169
__________________
2001 Oldsmobile Alero GL Sedan - Sport Red
 miles as of 04/23/10
Last edited by Runaboveit : 03-16-2010 at 09:49 PM.
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03-16-2010, 10:55 PM
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#7
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2Screwy
Join Date: Dec 2003
Location: South Dakota
Posts: 13,238
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first thing i did with every alero i got was to block off the EGR, it's a waste.....
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03-17-2010, 05:03 AM
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#8
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GLS member
Join Date: Feb 2004
Location: MARYLAND
Posts: 4,018
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well it serves its purposes as an emissionary control dvice, but from the "performance" perspective no one wants it.
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03-18-2010, 12:25 AM
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#9
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Aleromod part owner
Join Date: Nov 2003
Location: Far Northeast Philadelphia, PA
Posts: 18,199
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^ Yes but unless it's deleted in the car's PCM it's going to get bad MPG and lower performance 
__________________
33% ALEROMOD OWNER!!
2000 Olds Alero 3400 SFI 14.53 @ 94.93
1985 Olds Delta 88 307 SBO 17.96 @ 76.99
2007 Volvo V50 T5 6M 15.782 @ 89.12
www.facebook.com/kb0177
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03-18-2010, 08:13 AM
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#10
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2Screwy
Join Date: Dec 2003
Location: South Dakota
Posts: 13,238
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well yes, but i can control that.....
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03-18-2010, 01:25 PM
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#11
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Aleromod part owner
Join Date: Nov 2003
Location: Far Northeast Philadelphia, PA
Posts: 18,199
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I know
Do you know the shift points that are in the DHP PCM? I like the shift points I have but thinking about getting the HP tuners box 
__________________
33% ALEROMOD OWNER!!
2000 Olds Alero 3400 SFI 14.53 @ 94.93
1985 Olds Delta 88 307 SBO 17.96 @ 76.99
2007 Volvo V50 T5 6M 15.782 @ 89.12
www.facebook.com/kb0177
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03-18-2010, 01:51 PM
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#12
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2Screwy
Join Date: Dec 2003
Location: South Dakota
Posts: 13,238
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i don't know, but hp tuners is the shit.....
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03-18-2010, 02:21 PM
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#13
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Now a Ford Traitor.
Join Date: Mar 2008
Location: Greenland
Posts: 6,996
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Quote:
Originally Posted by Redog
I know
Do you know the shift points that are in the DHP PCM? I like the shift points I have but thinking about getting the HP tuners box |
you are honestly running a stock PCM...
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03-18-2010, 04:59 PM
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#14
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636 whp
Join Date: Aug 2006
Location: AZ
Posts: 11,876
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he just said he has the DHP but a mail order tune is BS
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03-18-2010, 08:31 PM
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#15
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Now a Ford Traitor.
Join Date: Mar 2008
Location: Greenland
Posts: 6,996
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still need anew EGR? i have a good one you can have
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