02 Expy code P0174 after P0308

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09-16-2007, 10:01 AM

millaman

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02 Expy code P0174 after P0308

My 02 Expy 4.6 is giving a P0174 code (bank 2 lean)...HISTORY: It all started with it running rough at idle and through acceleration and cruise range and seemed to be worse after a fill-up. Wife filled it up this last time, started the truck and it started missing worse afterwards, the service engine light came on. Pulled 1 code (P0308) misfire on #8...replaced plugs and swapped #8 COP with #2 COP and cleared the code. Test drove, still missing (running real rough). Pulled 1 code (P0174) lean on bank 2...the P0308 code is now gone.

My thought is it may be the #8 injector.<O:p</O:p

Items Tested:<O:p

Spark firing triggers, power (-/+) and resistance at the COP's are good<O:p></O:p>

Cleaned MAF sensor (easy and just for grins)
New air filter (easy and just for grins)
Can't find any vacuum leaks
Any thoughts before replacing the #8 injector (80.00 bucks) or taking it to the dealership...(Big $$$$$$$$)

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