i have narrowed my truck's problem down to the following:
egr vacuum regulator; pcv valve; or maf sensor....

i got no resistance from the egr vac. reg. (short), and i think i have a leak or faulty vacuum hose near the egr. right after i shut the engine off, i can hear a "pppssssssssssss" (kind of like letting the air out of a tire, but not as loud) right in the area of the egr vac reg... or slightly behind the egr valve itself.

i don't know exactly how to check and/or verify the vacuum hoses to determine if they are working right. i do not have a vacuum pump or tester for this....

what can i do to try to fix this myself???? i'm getting closer to finding out the exact problem...

any help would be greatly appreciated- please see first post=

https://www.ford-trucks.com/forums/s...hreadid=193431

 

Check out this thread, it you should find it helpful...

https://www.ford-trucks.com/forums/s...hreadid=170847