Please help before I blow this truck up

[nitrox2595]

I am going crazy. My truck has had a full trans rebuild, with a suncoast convertor, royal purple synthetic fluid, Mag tec deep pan, and HD bands, clutches, etc. I have had the truck back for 4 weeks, and the check engine lights came on with codes P0868, P2509,P0871 and the truck has not been right since the new trans was put in. I just got it back today after it being in the shop for 3 weeks. The owner of the shop told me that there is a problem with the TCM, TFP, ECM communication. He thinks there is a short some where and he is telling me that if we can't find it, he will not warranty the trans if it goes again. I never had these problems before. Now, I put a flex a lite dual fan in at around the same time as the trans, and after contacting them, the sent me a new control module, saying the original one was defective for these trucks. I have alot of mods, and electric components, Is this a problem anyone is familiar with? It seems like when the truck gets hot or is driven all day, the CEL, and Voltage? Light come on, I use my tuner to clear the codes, and it could be an hour, or 2 days before the problem happens again. Is there a way to get this solved once and for all? The shop said that the solenoid pack was replaced 3x and there is no way that the trans is at fault. I am going crazy and i am scared to drive it now... . HELP Oo. #@$%! Please.....

 

[nitrox2595]

Awesome... 59 view and no one has any insight. . FML

 

[Simplysmn]

OK Have you gotten a second oppinion from a another transmission shop?if it didn't happen before the trans I would say the shop that did the trans pinched a wire ? I Alway leave my truck's Stock and that way I don't have problem's with extra boxes or added troubles Hope you get it figured out

 

[HBarlow]

I have insight to offer but after reading your post figured you don't want to hear it.

What I have been told by a couple of guys who've tried it is the new AS68RFE cannot be modified like you are trying to do. The ECM/PCM are programmed for it to operate the way MOPAR built it. Your computers have sensed all the destructive mods you've had done and the TILT alarm has sounded.

You are trashing an expensive nearly new truck at great expense.

 

[cerberusiam]

What I have been told by a couple of guys who've tried it is the new AS68RFE cannot be modified like you are trying to do.

What makes you think it is an AISIN? There is no indication it is not the 68RFE.

Awesome... 59 view and no one has any insight. . FML

Did the place that built the trans do the install? If so one would think it is on them to find the short they caused installing it. Since it did not have issues before that it is not hard to follow.



If it is a short that is. Maybe they just did do the build right and thats the problem? What makes them think it is a short in the harness?



What do the codes indicate for a problem? From all accounts, if they don't set the trans upp correctly, or, go to far out of spec and not reprogram the controller there will be issues.



Do you have a trans controller programmer?

 

[HBarlow]

Nothing made me think his transmission is an Aisin. Aisins are never installed in pickups. I simply used the wrong abbreviation from memory.

The same applies to what I stated above. A local former TDR member known as RowdyII had a highly modified '07. 5 or '08 Ram with a built engine and a heavily modified MOPAR automatic transmission. He told me, maybe it was posted here in the forum, that modifying the transmission was a waste of money and labor. He said it retained it's soft shift characteristics even after being modified.

He disappeared from TDR a few months later. Have never seen or heard from him again. My guess is he grenaded the truck.

 

[Jim W]

My, son has a side business that modifies diesels truck in IL. He has modified everything from a 5. 9L 12V to a 6. 7L Cummins. The shop also works on Chevy's and Ford trucks too since they are in the heart of farming country.

Now with that being said the shop will not even touch a 68RFE Trans in a Ram they will swap them out but will not rebuild them. He relies on "ATS Diesel Performance" for their rebuilds and has good success with them.

I know this is not want you want to hear but I would contact them and ask if they have a shop in the area that can help you out. You may have to take the Trans out and send it to them for diagnostic purposes, but your truck will run better and the Trans will be built correctly.

Just my $0. 02

Jim W.

 

[PFranzese]

I did a search on the web for the codes you listed, here is what I found.



P0868 DODGE - TCM Comm Circ

P0868 - Transmission Fluid Pressure Low



P2509 DODGE - Charging Sys Output Voltage Hi

P2509 - ECM/PCM Power Input Signal Intermittent 6



P0871 DODGE - OD Pressure Switch Rationality Fault

P0871 - Transmission Fluid Pressure Sensor/Switch C Circuit Range/Performance



Found the code info here: OBDII Trouble Codes Definition, Description and Repair Information | Engine-Codes.com



Looks like the codes point to possible trans issues with line pressure or a faulty sensor. I saw something about a tech bulletin for P2509 on the site.

 

[nitrox2595]

Ok, Thanks for all your help. Here is an update from today. The truck has 104 miles since being picked up. I drove it this morning to a job, no problems. Picked up my loaded dump trailer(5000lbs) to go to the dump. On the way there, up a small hill, it started to lug, On the way back, unloaded, the CEL came on with these codes. P0700, P1506,P0480. When i got home, it barely moved on acceleration,and the trans fluid smells burnt. Called the trans shop, they told me to clear the codes, drive it for another 40 miles, and call them back. He also printed out a TSB bulletin saying that a bad ground could be causing stuttering and die out. I do have 2 different size batteries, and put the electric fans in, and if memory serves me correct, I remember someone saying that anything in the grounding system may cause engine/trans issues? Any truth to this. I am soo mad right now.

 

[cerberusiam]

The P0700 is the TCM telling you it has stored codes and problems. The burnt fluid is a good indication something is slipping in the trans. Hard to tell but its a good bet the builder missed something.



You should have 2 good same size batteries or the possibility of charging and engine problems exist. Its possible it might effect the trans but not as likely as a build problem.



As a rule you would likely be seeing more engine codes if there was a bad ground somewhere in the system.

 

[RustyJC]

When i got home, it barely moved on acceleration,and the trans fluid smells burnt. Called the trans shop, they told me to clear the codes, drive it for another 40 miles, and call them back.

Ummm..... my experience has been that's the kind of thing that isn't going to heal itself in the next 40 miles.



Rusty

 

[JR]

This is just my opinion but I would definitely take it to another shop that is capable of scanning your truck, not just scanning your codes to tell you what is coming up. A good scanner such as what the dealerships have or maybe a high end diesel shop will be able to pinpoint the source of the codes. Yes it will cost you money but better to know before you do any damage. And by taking it somewhere else besides where the trans was built you are much more likely to get an honest diagnosis. If the builder truly did screw up something in the build he may or may not be honest enough to admit it.

 

[mwilson]

They are most likely banking on the fact that in 40 more miles the weak spot will have grenaded, much easier to find the issue then... ... ... .....





Mike.

 

[Cummins12V98]

Just curious why did you put on the electric fans? From what I understand the stock fan uses very little power under normal conditions and the electric fan can't move as much air as the stock fan.

 

[firemansdiesel]

You did not say if your transmission is a Suncoast rebuild or just the converter from Suncoast. Give them a call and tell them your issues. They may have a solution for you.

 

[HBarlow]

A large stack of dollar bills and a different transmission builder would take the op a step in the right direction.

 

[S.Morris]

They are most likely banking on the fact that in 40 more miles the weak spot will have grenaded, much easier to find the issue then... ... ... .....





Mike.

You are soooo right:-laf

 

[MullenaxM]

The P0868 is a transmission low line pressure DTC,The P0871 DTC is a Overdrive pressure sense curcuit issue. The first thing I would recommend checking is the sump filter Gasket. If the sump filter gasket/seal is installed wrong or cut while installing the filter it can cause both of these problems. The next thing I would recommend checking is the spin-on (converter filter) filter, Make sure it is tight.



Mike

 

[nitrox2595]

Well, The NEWEST update. Got the truck back yesterday. It now has 48 miles on the trans. Last night on the way home the CEL cam on with 0700 code again. I will be driving it, and the exhaust brake will stop workin, or work while idling through a lot( not supposed to). It will be fine for a few miles and when i drive in stop and go traffic, it will then change the way it shifts. It takes longer to go from 1st to 2nd, and then bangs hard, and the exhaust brake does not engage. I just got out of the dealer where the truck got 4 updates and flashes, and it is STILL DOING IT... . I will pay someone good money if they can help me figure this out. It is beginning to make me depressed.

 

[Simplysmn]

I would seriously take it to a different dealer sound's like the 1 you are useing is a Idiot