1997 Ford Explorer V8 Code PO401

Reply

  #1  
Old 02-15-09, 06:23 PM
Member
Thread Starter
Join Date: Jun 2007
Posts: 2
Question 1997 Ford Explorer V8 Code PO401

I think code PO401 has something to do with the EGR system failure. Where is the EGR valve and solenoid on the engine and how can I isolate the problem part?
 
Sponsored Links
  #2  
Old 02-15-09, 11:03 PM
Member
Join Date: Dec 2001
Posts: 2,538
it may be difficult to isolate the problem part without a scanner, but most of the time it is either a bad dpfe sensor or clogged egr intake passages, the vac solenoid and egr valve rarely fail.
 
  #3  
Old 02-16-09, 04:23 AM
Member
Join Date: Apr 2006
Location: Floriduhhhhh Us of A
Posts: 611
Easiest way to determine if the problem is physical or electrical is to vacuum pump the EGR while at idle.
If the engine stalls or runs extremely ragged you then know the valve works and the passages are clear. Confirm vacuum from the solenoid to the valve and if that's in place move on to the DPFE...
If the engine DOESN"T run poorly with vac to the EGR at idle, you'll need to remove the valve check it for proper operation and then clear all passages of carbon
 
  #4  
Old 02-16-09, 07:35 PM
Member
Thread Starter
Join Date: Jun 2007
Posts: 2
Thx for the help

Thanks for the help. I will try it.
 
Reply

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread
Display Modes
'