fixt
Well-Known Member
- Joined
- November 15, 2010
- Messages
- 144
- Reaction score
- 2
- City, State
- North Carolina
- Year, Model & Trim Level
- 1996 5.0L XLT AWD
1996 AWD 5.0 L
Check Engine light came on yesterday and scanned with Innova 3160 scan tool
P0401 - Exhaust Gas Recirc Flow Insufficient Detected
There were two P0401 codes.
The engine runs fine and I can detect no sputtering or flat spots. Idles fine.
I had reset the code and it came back in later at 32mph and 174F ECT according to data. Trying to determine when it came in, I called the wifey and it had not come back in today. Her work is about 5 miles away.
Since it seems to be intermittent at this point, would you think the valve is getting sticky and need cleaning or would you think the valve position sensor (DPFE?) is going bad?
I read about decarbonizing and cleaning the EGR which I am sure has never been done, as well as checking vacuum lines and testing the valve by applying vaccum.
There is a vacuum line to the EGR from the EGR vacuum solenoid. Is that the place to apply vacuum?
Is the DPFE at the electrical connector on the back of the valve actually a position sensor for the EGR? Its not the flat black pancake kind.
How do I need to pursue fixing this thing?
I don't know much about the emission system, I prefer simple old jeeps.
Check Engine light came on yesterday and scanned with Innova 3160 scan tool
P0401 - Exhaust Gas Recirc Flow Insufficient Detected
There were two P0401 codes.
The engine runs fine and I can detect no sputtering or flat spots. Idles fine.
I had reset the code and it came back in later at 32mph and 174F ECT according to data. Trying to determine when it came in, I called the wifey and it had not come back in today. Her work is about 5 miles away.
Since it seems to be intermittent at this point, would you think the valve is getting sticky and need cleaning or would you think the valve position sensor (DPFE?) is going bad?
I read about decarbonizing and cleaning the EGR which I am sure has never been done, as well as checking vacuum lines and testing the valve by applying vaccum.
There is a vacuum line to the EGR from the EGR vacuum solenoid. Is that the place to apply vacuum?
Is the DPFE at the electrical connector on the back of the valve actually a position sensor for the EGR? Its not the flat black pancake kind.
How do I need to pursue fixing this thing?
I don't know much about the emission system, I prefer simple old jeeps.