Inmotion tune/ EGR issues after timing belt service

loveCRD · **Joined:** Sun Dec 16, 2012 10:28 pm **Posts:** 6

I just got my CRD back after having the timing belt/serpentine/water pump replaced as well as a number of other things. (glow plugs, tires, brakes, etc.) It seems that they left the battery disconnected for around 2 weeks and since then maybe the inmotion tune is gone. (assumption) My reason for believing so is the lack of higher end power it had before, but this may be wrong. I am also getting a few codes thrown at random times, (not in times of high power or boost). They say that since the timing belt this has been happening and at first it pointed to the MAF sensor. The MAF was replaced, and i am still getting codes. My TCM tune from GDE seems to be fine, i have the same exact shift points and TC lockup speeds. I forgot to write the exact codes down, but i remember one of them is P0101.

I guess my real questions are; 1, Isnt the Inmotion tune a plug and play, or is it like GDE where you send in the whole PCM as a core? The reason i ask is because i found a box under the drivers console that plugs into the system, and the fact that i bought the Jeep with the tune on it and never upgraded to GDE's tune, so i have no idea how it was done. Plus if it was a plug and play shouldnt it still be there? Unless maybe theres a backup battery that went dead??? Just sounds wierd...
2, with this EGR bypass, should this eliminate all sludging of sensors (MAP in particular) or should i still have to check up on them? Also, does the EGR bypass have a flash on the PCM that might have been erased? How do you trick the PCM into thinking the EGR is working properly? On another note, the was a plug on a harness that had aluminum foil wrapped around it that somehow slipped by me for a year or so... What the hell could that be for??? That was removed as well.

Thank you so much for reading. I apologize for being so thorough, but i want to get as much information on here as possible so you guys can give me the best answers. Plus i know this is the place for it.... :-)r

loveCRD · **Joined:** Sun Dec 16, 2012 10:28 pm **Posts:** 6

The codes were P0101 (MAF), and P0234 overboost. Im pretty sure the current code is just overboost but i cant understand why.

ATXKJ · **Posted:** Mon Dec 17, 2012 9:55 pm

both GDE and Inmotion are PCM remap's - i.e. no outside boxes
and they remain until someone reprograms the box - or replaces it.

so if you have an outside box in addition - (generally plugged into the turbo pressure and injector pressure sensor's)
you will kill the injector pump.
the box will spoof the injector pressure and drive it too high - the remap's already boost it some - but by themselves they won't overpressure.

the GDE makes the EGR go away.

loveCRD · **Joined:** Sun Dec 16, 2012 10:28 pm **Posts:** 6

I am well aware of the affects of stacking chips. The PO would not have done that, and that is def not the issue. However, this box under the dash definitely deserves a closer look, im not sure what it is-it could be OE. I have driven over 40k miles in the current configuration, so i know how it should behave. So on a 100 mile drive this morning i noticed the CEL is now staying on. The mileage doesnt seem to be affected but the power is definitely not what it used to be. I am not noticing any bad indications, all my temps are good, turbo sounds perfect.

Any ideas??? I am lost....

WolverineFW · **Posted:** Tue Dec 18, 2012 10:52 pm

Define plugs in. Is it plugged into the OBD2 port or does it have its own harness? SEGR box perhaps?

Drewd · **Joined:** Mon Feb 06, 2006 12:24 pm **Posts:** 902

Immotion and GDE tune are "written" into the computer and won't delete unless the CRD is exposed to high powered EMP from an overhead ballistic missile explosion.

I have an immotion tune in wife's car and a GDE tune in my vehicle. Both vehicles have had battery disconnected for 4 weeks at a time and tune was not erased for either.

I don't believe in coincidences. When a vehicle does't run well after a timing belt it usually mean the person who did it screwed up.

Please share with us who did the timing belt, did the have the correct Miller tools or did they use the pray and mark method to ensure timing is correct?

Joe Romas · **Posted:** Wed Dec 19, 2012 8:45 am

"replaced as well as a number of other things. (glow plugs,"

If a dealer installed 5 volt glow plugs your ECM was flashed and you lost your Inmotion tune :furious:

loveCRD · **Joined:** Sun Dec 16, 2012 10:28 pm **Posts:** 6

Nope i made sure they used the correct tools straight from chrysler, i deal with them all the time and they know me as very particular and picky with the way my things are worked on. (my uncle runs the shop) and thier diesel guy loves working on my CRD. They did my TC last year which is perfect. They also did my glow plugs, though i dont think they had to reflash. (and they know i have a tune)

The box under the dash is not connected to the OBDII port, its a separate harness, SEGR could be a good possiblity- but i have the provent setup, why would you need the SEGR? If it is on there it was put on by the P/O. I did mention before "EGR delete" but i just meant the provent setup. :banghead:

sorry

Checked my MAP sensor, a little oil but no buildup/looks perfect. This overboost kinda worries me, how about the wastegate? Thats designed to vent excess boost pressure correct? So if this was going bad i should get an over boost right? How would i know if my turbo is doing ok? Check the play on the impeller shaft right?

ChooChooman74 · **Posted:** Wed Dec 19, 2012 11:07 am

Wastegated turbos are a thing of the past. Our turbo uses VGT technology (Variable Geometry Turbo). The vanes pivot to control boost.

ATXKJ · **Posted:** Wed Dec 19, 2012 7:18 pm

Joe Romas wrote:

"replaced as well as a number of other things. (glow plugs,"

If a dealer installed 5 volt glow plugs your ECM was flashed and you lost your Inmotion tune :furious:

x2

and the dealership doesn't have an option - if they plug in the Jeep to the computer - it downloads the latest software rev - they can't pick and choose - nor can they go back.

loveCRD · **Joined:** Sun Dec 16, 2012 10:28 pm **Posts:** 6

Just because its a VGT, doesnt mean it doesnt have a wastegate, however i didnt know the CRD does not have one.

My PCM was NOT reflashed.

I assume i need to check for sticking vanes the more i read. It seems my provent and SEGR are working as designed. Like i said, im getting good mileage, Im not seeing any buildup on anything.. I might have more smoke under boost buildup/acceleration, which makes me think turbo. I just cant grasp the conditions and put them together. (P0234 and reduced power) So if i want to check the vacuum diaphragm/pressure sensor or manually actuate the vanes how do i go about this? What else can i try??

Inmotion tune/ EGR issues after timing belt service

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