Just got done doing some tuning with Tunercat. Ran it out for 20-30 mins and adjusted some settings.

Went to program the PCM with my laptop via battery power (it lasts 5-7 hrs on battery). It went through 100%.

Turn key off, wait, turn it back on, try to start car....it won't start and my radiator fans come on and stay on when I turn the key to the on position.

So I think the PCM is fried?

I took out the PCM fuse to see if I let it sit for 20mins or longer to see if it will work. But doubtful.

Any advice? Pretty sure I'll just have to get another PCM and keep a spare.

What would cause this though?

This would be my 5th programing the same PCM and never had this trouble yet.

SIGH...

Thanks!

 

Did it actually say complete after it got to 100%? Did it have any errors during programming? Have you tried reprogramming in your previous tune or doing a read to see if it still communicates? If its no longer communicating, then its fried so to speak. I always had 2 socketed pcms so i always had a back up and both were easy to fix being socketed.

Ken R.

 

Yeah it said 100% complete with no errors.

Tried to reprogram it 2x before unhooking the battery and after. No communications.

My dad found a place where he can get a blank PCM for $100 and get it to me today, but can Tunercat program a blank PCM??

 

it messed up somewhere. i did something similar to my pcm. i sent it to madtuner. they do a cheap fix.