1996 GT 4.6 mustang running too rich
#1
1996 GT 4.6 mustang running too rich
My car is showing a P0172 obd2 code for mixture being too rich. I have cleaned the mass air flow sensor and replaced some vacuum lines, but code still comes back. Before it was setting a rich code it was setting a purge valve solenoid code, but the code for that one has disappeared. Does anyone have any idea's on what could be causing this?
#3
I have checked the volts on the two oxygen sensors upstream, they both have the required volts on warmup. The thing is I just did replace one of the 02 sensors upstream about 1 month ago.
#4
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Originally Posted by steelhorse06@hotmail.com
I have checked the volts on the two oxygen sensors upstream, they both have the required volts on warmup. The thing is I just did replace one of the 02 sensors upstream about 1 month ago.
#6
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Originally Posted by steelhorse06@hotmail.com
I checked the long term fuel trim its way off from normal, its like -21.00%.
#8
I replaced my air filter on my cold air intake, it had a disposable filter on in it from the previous owner. I replaced it with a k&n. I erased the dtc's once again to check it. After driving again it yesterday,the check engine light came back on. I checked it with my new scanner. I'm not showing a running too rich code anymore, it's now showing a P1443 code. Something about the Evaporative Emission Systems Purge Flow was low or no flow at all.
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