If I were me, (and better looking), I would just do the opt in and replace all glow plugs so I had a bench mark.

That is the first I heard of a gp failure resulting from a ts chip change or install.

(regardless if it's something you want to hang on and drive, just do it)

You might be surprised. Other thoughts are uvch in question.

Dunno

Denny

 

My not to go to thought is: Drum roll please.

Pull the chip. retard the truck from power for 20 minutes, and see if things go back to Mayberry..

Did you look at the code on the PCM and compare it to compatibility for your new chip?

Denny

 

Denny, the chip would not work for whatever reason (even tho seller checked my code) . I pulled it out, currently not installed. When I re- installed computer, that's when I got #6 GP fault and a "random shut off".

NOW.... here's the update. I was able to get a few more turns on that 10mm bolt for the PCM. Currently, no CEL at all. Just drove it 10 miles. Idles and runs like a top. Starts normal. This truck angers me LOL. I'm gonna let it sit over night and start it, see what happens. If #6 pops up, I will guess it's the GP.

 

I looked at the connector, could not figure out how the hell to remove it

 

That is a legitimate beef, I finally just grabbed mine by the edges somehow and pulled and they came off but I suspect that there is a tab that should be depressed to release the things.

 

Mine was a P0237 after chip install:

https://www.ford-trucks.com/forums/1...0237-code.html

Resolution was R&R PCM in a specific order:

 

ok this morning she started right up. No CEL. I think the PCM was not tight enough on both sides ....time will tell on the glow plugs lol

 

well F me, light came back on. Gonna check out the GPCM ....

 

ok tested the pins from the GPCM...2, 4, and 8 had 1.5 ohms, #6 had NO OHMS reading. .... where do I go from here ??

 

First stop is at the 9 pin connector on the valve cover. Next into the valve cover. Fortunately the driver's side is easier.

 

Yep, check your ohms at the UVCH and see what you get, if it's still nothing pop the cover and see if the wire came off and you can ohm the GP directly in it's place. On the UVCH connection the two outer pins on each end are your glow plugs.

 

Pretty common, and an easy fix. New to you truck. Right,

Echo what I said before. Just replace all glow plugs with OEM, nothing else.

Denny

If the Glow plugs are old, so is your clock. If after the GP change out and you still get this code. UVCH or 42 pin problem.

In General if you don't change your glow plugs like spark plugs every 5 years, in the winter climates, put heavy weather gear behind the seat. Warmer climates still get a residual for start ups.

I'm in the North.

Denny

 

annnnnd new code: p0683 .... guessing the module itself is bad? how can it be tested? Connectors are good-en-tight. Wires are snug.

 

It does seem odd it keep popping random GP codes, P0680 is for the module . I would start over, pull your chip and retroubleshoot your glowplugs, ohm out wires/check voltage from the Module---> UVCH--->GP's. double check all connections to and out of the GPM and UVCH.

Did you check the connections for #6 GP? if the connections are good replace the GP. The OHMs are starting to creep up on the other GP's as well.

At this point I would OHM out the passenger side GP's if they are around 1.5 and GP3 is 0-ohms or higher then yes I agree with everyone else it getting time to change them all since your are gonna open that side also.

 

I ordered a new GPCM ....everything that I read p0683 was faulty module 95% of the time