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Old 10-20-2010, 02:22 PM
Solo V8 4G Solo V8 4G is offline
Life is like skid marks
 
Join Date: Oct 2010
Posts: 139
Default Re: If you have an 01+ 4.0 with lean codes (PO171 and/or PO174) look here!

Quote:
Originally Posted by TurdFX4 View Post
Mine just threw the codes for lean bank 1 and 2, mechanic said it might be the CAI with it all of a sudden getting colder out, the colder denser air may effect it.
the way you would check to see if it is CAI is by hitting it with a hammer with it running, if the engine idle straightens up then you can remove the CAI clean it with carb cleaner or brake parts cleaner and reinstall.
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98 Ranger, Bagged 2600's in the front, 2500's in the rear. 3 Gal tank. DJM Upper and Lower control arms. 2 Thomas Compressors (garbage). 4 linked rear with C-notch. All (except cab) fiberglass. Custom Tribal Paint (soon to be Sunburst/burnt Orange).
Coming soon - 405HP 4.6L (SOHC), 4R70W
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