Mustang codes= Help!! UPDATE!!!! REpl....

kennebellgt · 07-16-2008, 01:26 AM

UPDATE: UPDATE: >>> I changed both 02 sensors and the car is still running lean im stumped, i changed the fuel pump fuel filter now 02sensors, i dont know what else it could be i found an exhaust leak on the rubber hose that comes from the cats it was ripped pretty bad i fixed that and still running lean, i have no clue on what it could be now its ticking me off anyways any idea's? [sm=lame.gif]

I pulled some codes from my 95 GT Mustang and code 172R came up and that means= HEGO (HO2S) sensor fault/lean. What could be wrong, my fuel pressure is set at 40psi just changed my fuel pump and fuel filter, i dont know what it could be so any advice would be greatly appreciated, Thank You for your time

kennebellgt · 07-16-2008, 02:07 PM

bump

kennebellgt · 07-16-2008, 04:15 PM

bump +1

AdderMk2 · 07-16-2008, 05:34 PM

change the O2 sensor.. I bet it goes away

kennebellgt · 07-17-2008, 11:48 PM

right on yeah i am going to throw some in, could it aslo be my egr sensor? (thing that mounts to the manifold or egr spacer) it seems to make a buzzing noise when i give it gas

AdderMk2 · 07-18-2008, 06:33 AM

Quote:

ORIGINAL: kennebellgt

right on yeah i am going to throw some in, could it aslo be my egr sensor? (thing that mounts to the manifold or egr spacer) it seems to make a buzzing noise when i give it gas

no

mjr46 · 07-18-2008, 07:08 AM

make sure there are no exhaust leaks before o/2 on that bank also

kennebellgt · 07-18-2008, 03:00 PM

the codes that came up did not specify on which bank it just says o2 sensor fault/ low voltage

kennebellgt · 07-22-2008, 07:22 PM

bump need advice, only a few people that give help on these forums now days, special thanks to mjr 46 & adder you guys are the Sh*t

Joel5.0 · 07-22-2008, 08:06 PM

172 - O2 Sensor sensor circuit indicates system lean (right side)