Originally posted by HITMANinMI:
Originally posted by TronX:
What this means is that your Mass Airflow Sensor may have become contaminated. Rather than replacing the MAF as Ford recommends, I have always successfully cleaned MAFs with carb cleaner. If this doesn't work I guess you could always change the fuel filter...



WTH are you talking about, a CEL because of a fuel filter? Also if the MAF was dirty he would get PO171 system to bank 1, ONLY, he wouldnt get PO174 as well.

To the first poster ignore that post by TronX, he has no idea what is talking about.





You think you know everything about cars? The CEL codes do not always tell you what�s really wrong and it can mean many things depending on the maker of the car. The fuel filter its self would not set off a CEL code here, but this was more of a suggestion for fixing related issues. Besides it can help if its never been replaced from years of driving. Along with a few others I can think of like replacing any damaged PCV valves, Inspect each vacuum line for leaks/cracks, clean or replace any air filters, Reseat the oil dipstick and checked the gas cap.. LOL

There is a TSB from Ford.
Article No.: 98-23-10
Date: 11/23/98
Mass Air Flow (MAF) - Sensor Contamination
P0171, P0174 (Fuel system lean, Bank 1 or 2)

There is no procedure for cleaning the MAF; Ford says it has to be replaced.
All though you can clean this part as many here have already done. This same part can also give you many other codes...It's a real Ford Gem.

He should inspect the hose from the PCV valve to the intake.
Sometimes the lower intake leaks at the IMRC seals� (This can cost a lot of money to fix.)
Though it is possible you may only need to clean the EGR ports thoroughly.
The PCM might also be defective ect�?

And if he comes back saying I was right about any of this then I'll be sure to step all over your ego trip.