How much does it cost to reprogram a PCM?

The PCM with need to be programmed to accept the new key which will cost about $130.00 at the dealer unless you have the old key which you can dig the RF chip out of the plastic part to tape or glue to the new key. I have seen that work. Also here are the instructions on how to reprogram the PCM

All OBDII scan tools support the Powertrain Control Module (PCM) reset.

The PCM Reset allows the scan tool to command the PCM to clear all emission-related diagnostic information. When resetting the PCM, a DTC P1000 will be stored in the PCM until all the OBD II system monitors or components have been tested to satisfy a drive cycle, without any other faults occurring.

The following events occur when a PCM reset is performed:
- Clears the number of Diagnostic Trouble Codes (DTCs).
- Clears the DTCs.
- Clears the freeze frame data.
- Clears diagnostic monitoring test results.
- Resets status of the OBD II system monitors.
- Sets DTC P1000.

NOTE: When using the New Generation Star (NGS) Scan Tool to perform a PCM reset, press the CLEAR button. This function is performed only after retrieval of continuous DTCs.

New Generation Star and Generic Scan Tool
Refer to the scan tool manufacturer's manual for specific instructions on how to perform PCM reset.

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.

Then you still need to get it reprogrammed for anti theft which would include your key fobs

FORDÂ KEYÂ PADS

†Enter permanent factory code

†Press the 1/2 button within 5 seconds to enter programming mode

†Within 5 seconds enter new code,  doors will lock,  unlock to verify code, this erases previous codes
remotes will also need to be programmed.

FORDÂ KEYÂ PADS/REMOTES

†Insert key,  turn ignition off to on eight times in succession,  ending with key in on position doors will
lock,  unlock to verify in programming mode

†Press any button on new remote,  doors will lock,  unlock to verify

†Do the previous step with the second remote,  doors will lock unlock to verify.

†Turn ignition switch off. Doors will again lock,  unlock to verify.

You are probably talking about a 1600 code which means the key doesn't match. You'll have to get this reprogrammed at a dealer. I really don't know how someone can sell a pcm already programmed when they don't have the vin. If it is it's just a general one. If you change a pcm it HAS to be reprogrammed for the vin including keys/keyfobs

Did they check the fuel pressure? It may not be turning the fule pump on and was the inertia switch checked to see if it is kicked on. Why was the pcm replaced to begin with? There are porbably 200 wires running to the pcm so asking where the short is is kindo fnil at athis point. The circuits will have to be traced down to see whichone it is. I would start with the fuel circuit or see is there are any bent pins on the pcm where it was connected first. Did the dealer reflash it or what exactly did they do?

Shorts can be hard to find, and this isn't the place for it for obvious reasons, it will have to be physically looked at. Wha I would suggest is to check all the fuses in the underhood junction box then check the coolant temp sensor it shold have abot 1550 ohms when at 230 degrees, fuel pressure sensor which shold have about 2.2 volts at 30 psi and intake air temp sensor which shold be about 3.51 volts at 50 degrees lower volt astemp is higher. And finallyo r first if you like disconnect any sensor to see if engine starts. That wil put it in open loop. You might also try checking resistance on crank and cam sensors, although we dont' have any numbers here so you might check against a new one. Other than that I have nothing else to give you. Oh, one otehr thing there is a ground wire on the rad support for pcm and rpcm relay. Make sure that is good and then check pcm relay as that runs the inectors form a signal the pcm will give it.

Yep, you will need to visit a shop that can initialize the key for you should cost about $130.00

Make sure your cam timing is correct it may not be then have check for no power to read codes as you may have one or two and not know it.

You can check your timing all you want but the pcm controls it. If you pulled the dist you need a local pro with a scanner to reset cam to crank sensor schyncronization, which you can't do. Your best bet is to scan for codes and check fuel pressure before you start to throw money away at good parts. Also check for vacuum leaks. Otherwise you are just throwing money at it until you actually either give up and have a pro look at it to see what is really wrong. Auto parts can scan for codes and rent gauge for fuel pressure.

Only the same numbers will work