I recently woke up to a PCM malfunction flashing OD light and tranny stuck in high gear . I bought a used PCM and installed it only to get a cranking non starting engine. I've heard the unit has 2b re-programed and keyed is this true ? and how can this be done when the dealer will not reprogram a PCM that I didn't buy new. ANY AND ALL SUGGESTIONS PLEASE leave out the Junk the truck suggestions tho. this is a 2001 4x4 lariot 5.4 auto supercrew W/rebuild trans

 

If it's a 99 or later, a dealer or well-equipped locksmith must reprogram the anti-theft system to your existing keys. The PCM, the Instrument cluster, and the keys are all "married" to each other.

You CANNOT simply replace either the PCM or the instrument cluster or the keys without this being an issue in the 99 and newer F150 trucks.

 

I will try a locksmith since the Ford Dealer already said that they wouldn't do it

 

Whatever it takes...

Of course, transmission problems are only very rarely caused by the PCM, so you'd better hope that after all this that the transmission itself isn't the issue.

 

HEY THANKS FOR THE REPY MY GARAGE THAT I TAKE IT TO FORINTERLOCK SERVICE HAS BEEN A GREAT HELP HIS LOCKSMITH SAID IF i HAVE TWO fORD KEYS OR TWO STARTEC KEYS THE OLD PCM AND THE USED PCM HE CAN CODE THE REPLACEMENT PCM TO THOSE KEYS . I DIDN'T HAVE TO OF THE SAME KEYS I HADE ONE OF EACH , SO THEY WHENT TO A DEALER HAD TO FORD KEYS CUT TO MY EXCISTING FORD KEY BECAUSE THEY ONLY SELL SETS OF TWO AND NOW CAN CODE THE REPLACEMENT TO THE KEYS . KEYS WERE $65 AND THE LOCKSMITH IS $130 SO THAT SURE BEATS $1,100.oo AT A DEALER. i HAVE A RECENTLY REBUILT TRANS AND WAS PERFECT WHEN PARKED THAT NITE AND IN THE MORNING IT WAS Fd UP i THINK THAT MY DRIVE TIRE WAS STILL SPINNING ON ICE WHEN I WAS NOT ROLLING AND HIT THE ELEC 4X4 SWITCH SO MAYBE WATCH OUT FOR THAT . THE GIRL NEXT DOOR HAD THE SAME PROBLEM THE SAME DAY WITH HER JEEP IT COST HER $1100.oo AND PROBABLY DID THE SAME THING AS ME THANKS AGAIN SPYDA F150