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Lean Issues Read Entirely
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Hello I'm Nicholas I am from Commerce Georgia I have a 1998 Ford Expedition Eddie Bauer 5.4L 4X4 with Mach Audio System
In some category's I am smart in other places I am not and I would like to help others with issues and have conversation but I also have a issue also and in need of some advice !! Please Help
I bought my truck in March of 2013 I had a XLT previously now I have the Eddie Bauer 5.4L when I bought it the man said it needed new Exhaust Manifolds and Exhaust Manifold Gaskets he had both. So I took it to a local shop He called me a day later and said he accidently broke the Exhaust manifold bolts into the head I told him to drill it out and put a bigger bolt in no problem well he "accidently" broke the ears off of the head so I had the truck towed somewhere else to another shop I bought New Heads Water pump since it was going to be accessible Head gaskets intake and exhaust gaskets the gaskets came as a set with the entire top end as far as gaskets go Well Now a year later it is still showing CEL: System Too Lean Bank 1 P0171 System Too Lean Bank 2 P0174 mostly it shows up P0171 when it comes back after erased What I have done is Ive Raplaced the Faulty PCV Valve and line and Both Elbows I have also Taken The MAF ( Mass Air Flow ) sensor out and cleaned it with MAF cleaner runs ok for about a month and CEL illuminates again Fuel Filter has been replaced the Fuel pressure is around 40 I cant Remember I know its a pound or so off but not enough to make it run rough and throw codes
air filter has been replaced also ummm Any questions ask Please I insist !!!
Sorry if I shouldn't have posted this a Admin or moderator can move to the right place if they like would like !
Thanks in Advance Nicholas
Hello I'm Nicholas I am from Commerce Georgia I have a 1998 Ford Expedition Eddie Bauer 5.4L 4X4 with Mach Audio System
In some category's I am smart in other places I am not and I would like to help others with issues and have conversation but I also have a issue also and in need of some advice !! Please Help
I bought my truck in March of 2013 I had a XLT previously now I have the Eddie Bauer 5.4L when I bought it the man said it needed new Exhaust Manifolds and Exhaust Manifold Gaskets he had both. So I took it to a local shop He called me a day later and said he accidently broke the Exhaust manifold bolts into the head I told him to drill it out and put a bigger bolt in no problem well he "accidently" broke the ears off of the head so I had the truck towed somewhere else to another shop I bought New Heads Water pump since it was going to be accessible Head gaskets intake and exhaust gaskets the gaskets came as a set with the entire top end as far as gaskets go Well Now a year later it is still showing CEL: System Too Lean Bank 1 P0171 System Too Lean Bank 2 P0174 mostly it shows up P0171 when it comes back after erased What I have done is Ive Raplaced the Faulty PCV Valve and line and Both Elbows I have also Taken The MAF ( Mass Air Flow ) sensor out and cleaned it with MAF cleaner runs ok for about a month and CEL illuminates again Fuel Filter has been replaced the Fuel pressure is around 40 I cant Remember I know its a pound or so off but not enough to make it run rough and throw codes
air filter has been replaced also ummm Any questions ask Please I insist !!!
Sorry if I shouldn't have posted this a Admin or moderator can move to the right place if they like would like !
Thanks in Advance Nicholas
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Joined: Sep 2010
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From: Southern Cal
Are you using an aftermarket air filter such as a K&N? The oil spray necessary to help with filtering, can collect on the MAF sensor and prevent it from reading your air flow properly.
You might go back and clean it or change back to an original type filter and see what happens.
Sounds like you've hit the pcv elbow issue to eliminate the most common issue.
You might go back and clean it or change back to an original type filter and see what happens.
Sounds like you've hit the pcv elbow issue to eliminate the most common issue.
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