OBD Codes - Ford Mustang Forum
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post #1 of 2 (permalink) Old 04-27-2019 Thread Starter
JustNotherStang's Avatar
Joined: Apr 2018
Location: East side
Posts: 20
OBD Codes

Took my 96 mustang to AutoZone to check the engine codes. It's a V8 with roughly 100k on it.

P0307 Cylinder 7 misfire
P0303 Cylinder 3 misfire
P1443 EVAP canister purge valve mechanical fault or VMV fault condition explanation ECM detected a fuel tank pressure change greater than a minus 7 inches of H20 in 30 seconds wthpurge less than 0.02 lbs. per minute
P0401 EGR System fault detected too little flow on the EGR system
P0171 Fuel trim bank one rich or lean condition on one engine bank only

any clues where to start looking?

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post #2 of 2 (permalink) Old 04-27-2019
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Standard troubleshooting procedures......if you need to, go to Helms or alldata and purchase a short term access fee (very cheap) for your car....but in general...the misfires....time for new plugs & COPS, with regards to the evap- could be bad gas cap, an evap vacume leak or a bad evap cylinoid….the fuel trim issue...vacuume leak related

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