SPONSORED LINKS

2001 Ford Ranger PO401 emission code

Tiny
BUBBAB
  • MEMBER
  • 2001 FORD RANGER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 140,000 MILES
I keep getting this same trouble code over and over. I have had my truck fixed but they keep wanting to replace the egr valve and dpfe sensor which is cool but I have had those replaced twice so I know those are not at fault. I have had my truck about 18 months and this is the third time it has done this. Also nomatter what grade of fuel I use I always have a bad spark knock. I know all of this is from the emissions but im puzzled at what to do next.
SPONSORED LINKS
Thursday, April 15th, 2010 AT 12:57 PM

5 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
There's a problem with the EGR valve and also it will cause spark knock which is detonation if it doesn't open
Was this
answer
helpful?
Yes
No
Thursday, April 15th, 2010 AT 1:13 PM
Tiny
BUBBAB
  • MEMBER
  • 5 POSTS
This is the third egr valve and I still have the same problem. I have replaced it and the dpfe sensor twice and the codes come back about 6 months later so I think it has to be something else
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Thursday, April 15th, 2010 AT 4:08 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check for carbon buildup on the EGR tube
Was this
answer
helpful?
Yes
No
Thursday, April 15th, 2010 AT 6:17 PM
Tiny
BUBBAB
  • MEMBER
  • 5 POSTS
Doesnt have alot of carbon build up. Any ideas would be helpful
Was this
answer
helpful?
Yes
No
Thursday, April 15th, 2010 AT 7:30 PM
Tiny
BUBBAB
  • MEMBER
  • 5 POSTS
Could it be caused by weak vacume to the egr valve and if so what could cause that
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Thursday, April 15th, 2010 AT 7:32 PM

Please login or register to post a reply.

Related EGR Valve Content

Test an EGR Valve
VIDEO
Test an EGR Valve
Instructional repair video
VIEW MORE

Sponsored links