2001 Ford Explorer Q&A
2001 Ford Explorer Question: trouble codes
id like to know if a faulty gas cap would cause trouble codes po 171 and 174.when i bought this vehicle the check engine light came on shortly after. i took it to the place of purchace and told them the first code which said loose cap or canister cover.they said it was probably a bad gas cap .know it shows these two new codes which says its burning lean in bank 1 and bank 2 thanks for any info - jimbo63
Here is some info about these codes: http://repairpal.com/OBD-Code-P0171-and-P0174 - Bret Bodas
i would say intake o rings or fuel pressure. check fuel pressure with gauge if good do o rings first - hammerken
A faulty gas cap will not cause a P0171 or P0174 code. A faulty gas cap would cause an evaporative emissions code, possibly P0442 or P0446. Your 171 and 174 codes indicate a lean fuel mixture in the engine, possibly caused by a vacuum leak (intake gaskets or PCV system or broken vacuum hose), a weak fuel pump or restricted fuel filter or weak fuel pressure regulator, or a dirty/defective Mass Air Flow sensor. Also, double check the ductwork between the MAF sensor and the intake throttle body. - Visitor
I'm having trouble getting power when I accelerate. The truck seems to have no pick up when I go to speed up. I have already replaced the EGR valve and EGR vacuum solenoid. Can anyone help me what ...
My trouble codes are 136 & 172. I have already replaced both oxygen sensors, and the EGR valve. Can you help wh...
i get the po101 code but replaced mass air flow sensor and still the same problem the car is idling rough and it is jerking when accelerating. All oxygen sensor have been replaced, fuel filter, egr...
Car is running rough. Was only when cold til reached full opp temp, then would be fine. Now when warm it comes and goes mostly runs rough. Cleaned MAS with carb and choke spray, heard may have damm...