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Discussion Starter · #1 ·
Good day all,
I have a 2001 4.7 liter automatic SLT and I recently purchased it it had a misfire problem stammering and stuttering and throwing a 1391 code and then shortly thereafter started throwing and no bus code so I went ahead and bought a new PCM how to program to my VIN number installed it on the vehicle started right up but still has a slight stutter and won't stay at an idle goes up and down and then eventually dies and is now throwing the 1391 code again I replace the cam and crank sensor I've checked for brakes in the harness and currently checking the TPS for proper voltage I was wondering does anybody know if the AC would have anything to do with it before I purchase the vehicle the seller said that they had a problem with their AC pump and so their mechanic bypass and put a switch in.
Is it possible that this is causing all my issues anybody with any ideas really appreciate the input
 
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