I took my tuner off and put a different one on and when I turned key nothing happened. I put a new PCM on it and now it will turn over but no start. I put a Ficm on with new PCM and all it will do is turn over. Put my burned up PCM on a different truck and it did the nothing when turned the key just like on mine. But good PCM will start the other but not mine. I'm stumped. I'm getting good oil pressure but no rpms. Maybe cam position sensor? Ran great until the sct change.
2005 6.0 no start after changing sct
- Thread starter Racerorr
- Start date
swinky
New member
Read codes with the sct
alwil
Member
Check all the pins on your connections one might be bent, did you try going back to stock before switching programs?
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'94IDITurbo7.3
New member
bad moose
New member
Yep, they do.
What tuner did you change to? Did it have custom tunes on it that were written for a different strategy? If so... you'll have to take the truck to a dealer to be reflashed
A crank position sensor fault is to be expected when cranking for longer periods of time.
We sometimes get these after a stud or injector job when the hpo system has air in it.
A crank position sensor fault is to be expected when cranking for longer periods of time.
We sometimes get these after a stud or injector job when the hpo system has air in it.
That's most likely your issue then...if the second tuner had tunes written for a different strategy..and you tried to load one..
I know that's what burnt up my PCM but I've put another on and another Ficm and ran codes and checked oil pressure. It won't start. I've read threads and tried what people have said with relays and fuses and still no start. This is my only vehicle and need it to run. PCM on truck right now that turns it over is off 2004.
Gotcha....your best option is most likely gonna be a reflash.
As far as I know pcms are flashed for a particular vin. Instead of wasting a bunch of time id get a tow to the dealer. They may be able to reflash the pcm without the truck since you have it out.
But since custom tunes rewrite parameters in the pcm TCM & ecm... I would think there are issues with all of them. I could be wrong... maybe someone that knows for sure will chime in
