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2001 4.0 (SOHC) Explorer XLS




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2001 Ford Explorer XLS 4.0 SOHC

Body or suspension lift kit?
 












Update on P0171 & P0174 codes, the problem was a leaking lower air intake manifold gasket, I replaced both upper and lower air intake manifold gaskets, cleared the codes, now the truck runs great, no codes after driving it 400 miles. I think I am ready to enhance the suspension, just another project to add to my list. Sorry for the confusion, my bad.
 






nelson2001 said:
Update on P0171 & P0174 codes, the problem was a leaking lower air intake manifold gasket, I replaced both upper and lower air intake manifold gaskets, cleared the codes, now the truck runs great, no codes after driving it 400 miles. I think I am ready to enhance the suspension, just another project to add to my list. Sorry for the confusion, my bad.
Click to expand...

Sounds good. How'd you go about finding the leaks?
 






I took it to a garage paid for a smoke test.
 






nelson2001 said:
I took it to a garage paid for a smoke test.
Click to expand...
Smart dude, the fail safe and right way to find vacuum leaks, even if you have to pay. :thumbsup:

A few on this forum play the guessing game, and chase those codes for months, if not years. ;)
 












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