My L is not running good at all. When it goes into the boost(high RPM's) it just dies, it is boosting up but laggs and back fires. Changed plugs and fuel filter. Took it into the dealer, and they said the PCM is shot and they are getting me a new one. They said the PCM is not allowing the boost to go into the engine. Anyone ever here of this???? Runs fine when out of the boost...

just curious anyone else have a PCM go south......

 

wait a second.

tell them to reflash it and see what that does.

if the PCM goes bad, then it doesn't work at all! not periodically,

tell them to reflash it.

 

OK will try that..... does not make any sence to me either.....

Doug

 

What plugs are you using? I have seen this using non resistor plugs.

 

what if you did the boost bypass mod

that way the computer can do whatever it wants and there is still boost

 

well tried the boost bypass mod and made no differance. Plugs are the NGK TR6.. so good to go there. Called the dealer and they said that parts of the computer can go bad...... you got me.......

 

That is true that part of the PCM can go bad. It is nothing more then IC chips that basically have inputs and outputs. You could have a chip where some of the outputs and/or inputs are faulty while others are just fine. The software would be fine as well. It would be like walking into your home and 4 of your 6 light switches work and the other two don’t that’s a basic IC chip…

 

Wow your a law student and a Dealer Tech

As Stated above part of the circuit board can go bad.

 

how much is reflashing and who can do it and is there any was to tell if any parts in the pcm are bad like does it throw a code or something. if a part of is bad and not the whole thing will reflashing fix it or do you need a new one and how much are they and do you have to buy it from ford

 

The dealer should have some type of test they can run on the PCM to insure all inputs and outputs are working correctly, or to just tell them the PCM is working with no faulty hardware and/or software.