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Old 09-04-2012, 12:20 AM   #11 (permalink)
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Bump

I'm curious what the fix is..
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Old 09-04-2012, 10:44 AM   #12 (permalink)
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Quote:
Originally Posted by Ansare View Post
Bump

I'm curious what the fix is..
So am, as I still have not located / fixed the problem.

I've checked the TCM end and the connection is all secure with no signs of movement or play. I'm going to have to take it into a specialist auto electrician at this rate as my local Chrysler dealers are seemingly just fitters, with no concept on how to identify this electrical problem. They only seem capable of replacing expensive electrical parts one after the other until they maybe find the problem.

Last edited by Crazy_Mayes; 09-07-2014 at 01:59 PM.
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Old 09-05-2012, 10:59 AM   #13 (permalink)
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My car is back at the dealer again. Yesterday they say they called Chrysler for help. But, with the time change were not able to get anyone.
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Old 09-08-2012, 03:04 AM   #14 (permalink)
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My car is still showing the same symptoms as in the OP, but now it seems a bit more inclined to just stall while driving, especially at low speed.

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Old 09-08-2012, 03:49 AM   #15 (permalink)
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Not sure if this might help you, but I had a similar issue with my 06 srt8. It would randomly cut off and check engine light would come on saying it lost communication. Like your self I could not trace it to a certain action that would cause the problem. So After checking through the Internet I read that some of the 300 had issues with fuses not being tight enough and they eventually started to cause similar issues. I looked over all the fuses with no luck but did find the power connection in the engine compartment to be a bit loose. I snugged up all the fuses and re torqued the bolt down and the problem went away. My guess is wit huge vibrations the bolt would cause move and cause it to loose communication temporarily resulting I the shut down. Hope this helps you.


2010 300 SRT-8 BT Catch Can, DS intune tuner, 180 thermostat
2006 300 SRT-8 Kenne Bell 2.8 supercharger, borla cat back exhaust
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Old 09-08-2012, 08:26 AM   #16 (permalink)
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Quote:
Originally Posted by teamdrift04 View Post
So After checking through the Internet I read that some of the 300 had issues with fuses not being tight enough and they eventually started to cause similar issues. I looked over all the fuses with no luck but did find the power connection in the engine compartment to be a bit loose.
Well, I had a look through the engine bay fuse compartment and yes a few did have a little bit of play in them, including No 11 - Autoshutdown/Powertrain Control Module (PCM) and No 14 Powertrain Control Modeul (PCM). I decided to replace all the micro blade fuses up front, and in doing so noticed quite a bit of what seems like electrical charing / discoloration on the old fuse blades. My power connection and earth seemed well connected with no play at all.

Probably nothing, but they won't have been making the cleanest connection. Anyway, with new fuse blades which seem to fit tighter I'll see if it makes any difference.



This is an interesting link on fuses. Specifically the comment, "At times the fuse blades are discoloured or oxidized from heat and corrosion. If this is the case, the fuse is inferior, and direct replacement with a quality fuse solves the problem."

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Old 09-13-2012, 09:22 AM   #17 (permalink)
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i did change many diff parts not help.wasting money.finally change PCM solve everything.


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I'm having this problem where my 2006 300c 5.7 Hemi keeps seemingly cutting out while driving. Best way to describe the problem is the RPM needled drops to zero for a second, engine stops instantly, then re-starts and carries on. Causes a massive jerk effect as engine power is momentarily on / off. Also, it occasional just stalls when I come upto roundabouts or traffic lights. Problem does not necessary occur under acceleration, can occur when cruise control is on, or when braking. Problem is random also, one day I can do 300 miles with no errors or problems. Next day, it can do it 5-6 times over 10 miles. Then it can run fine with no faults or issues for another 10 days. Makes a chime every time the RPM needle drops off. It does not always cause the engine management light to come on though.

I took it into my local non-Chyrsler dealer first who scanned the fault code(s) which came back as follows:

Gearbox - Diagnose MT/AT - Fault Memory - U0100 - Lost Communication. Control module part number 04692392AK. Hardware version 0.547. Diagnostic version: 53.

eOBD - Fault Memory - U0100 - Lost Communication with ECM / PCM A
P0700 - Transmission Control System (MIL Request)


They referred me to my Chrysler dealer who again scanned the engine management fault. It came back with one active engine management fault, that being P0700 (Transmission Control System). No mention of U0100 code. The dealer carried out a flash update on the transmission control system and told me to keep an eye on the problem. It didn't fix it.

Went back into Chrysler and the re-scanned engine management light fault. The same error was present, but they were not sure 100% on what the fault was. They wanted to replace the Transmission Control System for 650.00, but could not guarantee me that was the error!

Car runs on petrol / lpg - They tried to tell me that it might be a mapping issue, but I told them that the fault occurs on both petrol and LPG. Either way, the LPG ECU copies the petrol ECU and just mirrors the input, so they are talking rubbish in that respect. It's in the LPG garage tomorrow just for a quick once over before I take back to Chrysler.

Has anyone experienced the same problem? Does anyone have any potential cheaper solutions which I could run past my main dealers as alternatives to replacing the TCU? Could it be something as simple as a sensor issue between the TCU and the Gearbox or is it likely to be the TCU and should I bite the bullet?

I'm at a real loss with this problem, any help would be greatly appreciated.
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Old 09-18-2012, 11:09 AM   #18 (permalink)
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Well, I've replaced all the discoloured and oxidized micro fuses under in the Front Power Distribution Centre (Fuse Box) now. The fuses I have fitted, although the same shape / size, the blades just seem to fit tighter and there is no play or movement in the fuses when seated. For the hell of it, I also replaced all the rear power distribution centre fuses, despite there not being much in the way of discolouration or oxidization, nor anything back there which would be linked to this problem. I did that because there was again lots of play and movement in the fuse blades.

I'm going to tempt fate here, but I've not had a single issue in just over 300 miles of sporadic running. I'll report back if I make it to a 1000 miles without any problems!
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Old 09-20-2012, 02:20 PM   #19 (permalink)
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I finally have my car back fixed from the dealer. They replaced the PCM. I have not been able to make it stall. I have had it for 48 hours. If you still have this problem you should look into the PCM.
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Old 01-10-2013, 03:31 PM   #20 (permalink)
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Ok, by way of an update my problem had seems to have resolved itself after changing the fuses.

Last edited by Crazy_Mayes; 09-07-2014 at 02:02 PM.
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