Truck dies w/o warning

AJF · Dec 19, 2011

Will be driving down the road, and truck will just die. It always starts right back up like nothing happened. Engine is the only thing that cuts out, radio and everything else still works. No SES lights or anything else when it dies...
Any ideas would be great

abbottfarms · Dec 19, 2011

It will start right back up immediately?

AJF · Dec 19, 2011

abbottfarms said:
It will start right back up immediately?

Yes. It dies, I let it roll to a stop if possible, turn the key back, and it starts like nothing happened. No long crank, or anything...

turbodiesel_02 · Dec 19, 2011

sounds like a cam sensor to me

zilla68 · Dec 19, 2011

AJF said:
Will be driving down the road, and truck will just die. It always starts right back up like nothing happened. Engine is the only thing that cuts out, radio and everything else still works. No SES lights or anything else when it dies...
Any ideas would be great

have you always had this chip?
Is the chip in your sig correct?

Mine would do the same exact thing in my old tunes, in either tow or heavy tow. changed tunes and haven't had a problem yet.

abbottfarms · Dec 19, 2011

x2 on the CPS, but the last time I had one go out on me, it would not restart immediately.

AJF · Dec 19, 2011

turbodiesel_02 said:
sounds like a cam sensor to me

I just replaced the cam sensor a little bit ago if that helps

zilla68 said:
have you always had this chip?
Is the chip in your sig correct?

Mine would do the same exact thing in my old tunes, in either tow or heavy tow. changed tunes and haven't had a problem yet.

Chip is correct, had it since the F6 came out...

AJF · Dec 19, 2011

Could it be PCM related by chance?

turbodiesel_02 · Dec 19, 2011

could be run without a chip and see if it goes away,i had an ipr do the same thing once

AJF · Dec 19, 2011

turbodiesel_02 said:
could be run without a chip and see if it goes away,i had an ipr do the same thing once

Do chips wear out? <-- Probably a dumb question

Big Bore · Dec 20, 2011

AJF said:
Do chips wear out? <-- Probably a dumb question

No but they fry. DP's are very sensitive to being pulled with key in the ignition, so be very careful because when they fry they can and will take out the PCM and IDM. Always have keys out of ignition and either in console or pocket before touching the chip.

Have you scanned for codes?

What brand of CPS did you use as a replacement?

Have you checked all the harness connections on the motor? IPR, ICP, VC?

Arisley · Dec 20, 2011

Big Bore said:
No but they fry. DP's are very sensitive to being pulled with key in the ignition, so be very careful because when they fry they can and will take out the PCM and IDM. Always have keys out of ignition and either in console or pocket before touching the chip.

Have you scanned for codes?

What brand of CPS did you use as a replacement?

Have you checked all the harness connections on the motor? IPR, ICP, VC?

All chips are very sensitive to being pulled with the key in the ignition. Come on Frank, you know that.

Other than that :whs:

CPS usually gives a SES light when it fails, but not always. Parts house CPS are notorious for being bad out of the box. Also check the CPS connection.

Tom S · Dec 20, 2011

Big Bore said:
No but they fry. DP's are very sensitive to being pulled with key in the ignition, so be very careful because when they fry they can and will take out the PCM and IDM. Always have keys out of ignition and either in console or pocket before touching the chip.

Have you scanned for codes?

What brand of CPS did you use as a replacement?

Have you checked all the harness connections on the motor? IPR, ICP, VC?

I do not think the IDM gets damaged pulling a chip with the key in. I also suspect that any chip has the potential to fry the PCM if it is pulled with the key in. I think there are two contacts on the PCM board adjacent to each other that short together.

AJF · Dec 21, 2011

Big Bore said:
No but they fry. DP's are very sensitive to being pulled with key in the ignition, so be very careful because when they fry they can and will take out the PCM and IDM. Always have keys out of ignition and either in console or pocket before touching the chip.

Have you scanned for codes?

What brand of CPS did you use as a replacement?

Have you checked all the harness connections on the motor? IPR, ICP, VC?

Scanned for codes, none.

I put an International CPS in

I have not checked IPR or ICP, VC connections seemed good...

Justin@DP-Tuner · Dec 21, 2011

AJF said:
Scanned for codes, none.

I put an International CPS in

I have not checked IPR or ICP, VC connections seemed good...

There is your problem. Running an International CPS with a DP Tuner is a no no.

Strokin Platinum · Dec 22, 2011

How does the international cps conflict with the dp tuner? This is the first I have heard this and would like to learn more.

Justin@DP-Tuner · Dec 22, 2011

Strokin Platinum said:
How does the international cps conflict with the dp tuner? This is the first I have heard this and would like to learn more.

Yes it does. I have no idea why, but it does. Even Jody will tell you to not run the International CPS.

Strokin Platinum · Dec 22, 2011

Oh ok. That's a good bit of information to know. Thanks! :thumbsup:

TyCorr · Dec 22, 2011

JBone said:
There is your problem. Running an International CPS with a DP Tuner is a no no.

Hmmmmm? How in the french onion soup does that matter?

Justin@DP-Tuner · Dec 22, 2011

TyCorr said:
Hmmmmm? How in the french onion soup does that matter?

"Yes the old international blue ones will throw off the timing because they were designed for in-line 6 cylinder motors."

That is just what Jody told me...