Engine light

[liljerryjr]

Engine light bank 1 bank 2 lean. Truck runs good. Replaced ox sensers an map senser . light still on .replace gas cap.light still on. Replaced hoses. What next? Light on for a year now.

 

[Bedrck47]

WOW you been a member since May of 2012 5 years and this is your first post and your light has been on for a YEAR NOW

First What took you so long to ask for help Seems to me that your not in any hurry to get it fixed

Second it would be nice to know what year expy you have

Third What are the code/s that you are getting?

Fourth Why did you replace the " ox sensers an map senser"

Fifth What other troubleshooting have you done.

 

[stamp11127]

Sounds like he is tossing parts instead of diagnosing the problem.
Lean on both banks means intake and/or gaskets are letting too much air into the engine.

 

[liljerryjr]

Po 171 po 174 2001 expedition runs good starts good. Idle good. But has lean codes. 5.4 egr good.pcv good. Somebody told me maybe fuel pump gasket leak? New gas cap.

 

[liljerryjr]

181000 miles on it.

 

[liljerryjr]

Maybe DPFB?

 

[Bedrck47]

Look at post #6 in the attached link for some information on your problem

http://www.expeditionforum.com/threads/p0171-p0174.32156/

What is DPFD or did you mean DPFE

Also read this attached link

http://www.expeditionforum.com/threads/about-egr-pcv-dpff-evap-iat-tps-maf.23583/

 

[liljerryjr]

DPFE controls EGR valve. 2 black hoses on it. Heard it can do this.

 

[Bruce Mitchell]

I had Check Engine light for bank 1 & bank 2 too lean. Replaced fuel filter - cleared codes & reset CEL; 3K miles since repair and no recurrence...

1999 EB 5.4 w/228K miles, BTW.

 

[Bedrck47]

I had Check Engine light for bank 1 & bank 2 too lean. Replaced fuel filter - cleared codes & reset CEL; 3K miles since repair and no recurrence...

1999 EB 5.4 w/228K miles, BTW.

Most likely you were lucky that is was something simple. Many other things can cause the same problem.

How long was the filter in the fuel line??