check engine lite

[brainfart3]

2001 SportTrac, 4.0 SOHC, 5spd, 4x4
after 160,000 miles the original engine self destructed.

located a "gently used" engine (7k miles) and swapped.

check engine lite goes off shortly after i fill the tank.
then comes on about 3/4 tank level.

don't know what code it's throwing yet - gotta stop by the parts store to have then read it.
did replace the factory fuel cap w/aftermarket. no change.

engine runs great - no miss, no lurch, no stumble.

know this post is a bit premature, just wanted to get some ideas.

many thanks.

 

[Project_Sparta]

Ive heard of this happening before. Someone left the car running while they filled it up, and it threw a code, took it to a shop and had it reset. no problems after that.

 

[brainfart3]

i'll give that a try - thx.

 

[Project_Sparta]

bump. wondering you fixed your problem

 

[brainfart3]

thanks for the followup. haven't resolved it yet.
reset codes, filled up. th elight came back on. ran a couple thanks thru her - light (shutting off at each fill-up) - no resolution.

i'll stop by the parts house this evening to have them read the "new" code(s) and update this thread..

 

[Bluejackets38]

Had the same problem was caused by dirt around where the gas cap seals

 

[brainfart3]

codes

P-0401 & P-0402
thoughts? suggestions???

 

[Ed Fenwick]

Hay, do a search for P0401&0402, you will see a sensor for the gasoline.
Good luck Ed

 

[bdmaash]

401 - insufficient EGR flow
402 - excessive EGR flow

 

[brainfart3]

Resolved!!!!!

changed out the DPFE sensor ($75 from FORD) and the light went away!.