runeweaver67
New Member
- Joined
- April 25, 2014
- Messages
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- Year, Model & Trim Level
- 2001 sport trac
ok here goes..i have a 2001 sport trac 4.0 (job 1 build) keeps throwing the p0171, p0174 codes.. i have found and replaced the following issues; i have replaced both upper and lower intake gaskets due to leaking, replaced the egr valve due to leaking, replaced the pcv valve.. all of my leakes were found with a smoke machine..i have inspected all vacume lines and have found no cracks or other leakes..i have also cleaned the MAF too!!
I have SCAN XL software that tells me that the STFT is running at or about 6-8 positive, and LTFT maxed out at 25 on both bank 1 and 2..i have tested the wireing for the o2 circuits and all checks out.. the o2 voltages are running around .2-.3v..I must admitt that im am new with scan xl so i may be missing something..
Is their anyone out their who knows these engines good that can help..
I have SCAN XL software that tells me that the STFT is running at or about 6-8 positive, and LTFT maxed out at 25 on both bank 1 and 2..i have tested the wireing for the o2 circuits and all checks out.. the o2 voltages are running around .2-.3v..I must admitt that im am new with scan xl so i may be missing something..
Is their anyone out their who knows these engines good that can help..
