Trying to Swap to a T350HD manual trans

Post by **occasional demons** » Mon Oct 11, 2010 11:40 pm

Caraudioholic24 wrote:
Now only question I have right now is the ecu has 4 spots for plugs but only 3 have pins??

The 4th socket is for ATX equipped PCM's

Caraudioholic24 · Post by **Caraudioholic24** » Tue Oct 12, 2010 1:02 am

So Im assuming when I finally find an 03+ engine harness that it is a single plug???

Also I dont have a clutch safety switch in my car. Will this come as part of the engine harness as well? I have'nt been able to find one local. Thanks

Post by **occasional demons** » Tue Oct 12, 2010 7:21 am

Clutch safety switch would be part of the under dash harness. The engine bay harness should have it wired up to the bulkhead connector tho. Whether or not it is wired from the firewall in, is another matter. That was the one section missing when I installed Speed Control. The internal wire from the engine bay connector to the steering column was not there. All else was. You might be lucky, might not.

By single plug, do you mean at the firewall? Then yes. AFAIK. It is on pre '03 anyways.

Caraudioholic24 · Post by **Caraudioholic24** » Tue Oct 12, 2010 11:01 am

I meant on the ECU but I think I have an idea which plug is what now. I know on the 02 I took a look at the safety switch was part of the harness that ran through the firewall. Not sure how its setup on the 03+. Ill have to keep digging.

Caraudioholic24 · Post by **Caraudioholic24** » Mon Oct 18, 2010 7:11 pm

Ok so I received my 04 r/t harness now I see that when I swap over to the ATX trans I assume the plug will just hang there as it taps into the LARGE harness that goes into the under hood fuse box. What would "That" Harness be called as my fuse box has a few pieces missing on the bottom.

Oredered ASP Custom Hydaulic Clutch Kit to get rid of the Plastic setup so that should be here soon.

AllI need now is my PT Clutch and a few odds and ends and we are goldoen. The suspense is killing me.

Caraudioholic24 · Post by **Caraudioholic24** » Mon Feb 07, 2011 10:07 pm

Ok just curious...as the time approaches that I can actually get this swap done....Im curious about swapping the computers... Now will it just be a matter of getting the cars vin reprogrammed at the dealer to the new computer or is it a bigger deal than that such as changing the skim module around the steering column

.. Its an 05 computer if it matters. Thanks

BlackRoseRacing · Post by **BlackRoseRacing** » Mon Feb 07, 2011 10:13 pm

if you have the pcm,skim,key,and cylinder installed into your car you may be able to start it right up....

Caraudioholic24 · Post by **Caraudioholic24** » Mon Feb 07, 2011 10:19 pm

I only grabbed the cpu from the donor car at the yard...my car is an 05 atx at the moment and already has a skim key..im hoping i can drive the car to the dealership with the atx tranny temporarily hooked up and swap them once i get there..im hoping its only a matter of programing the mtx to my car....

Post by **occasional demons** » Mon Feb 07, 2011 10:41 pm

You could drive your car there, swap in the MTX PCM, have them Flash your SKIM/VIN to it, remove it re install the original PCM, and drive home. The MTX PCM should then be ready to go, once you swap.

Caraudioholic24 · Post by **Caraudioholic24** » Mon Feb 07, 2011 10:48 pm

oh so i can do this even before I do the swap....interesting....that would make things a little easier

Post by **occasional demons** » Mon Feb 07, 2011 10:57 pm

I would definitely ask them for sure, when you schedule it.

BlackRoseRacing · Post by **BlackRoseRacing** » Mon Feb 07, 2011 11:09 pm

drive to the dealer on your stock pcm, once into the parking lot swap out the old pcm for the new one and have them reprogram it with your skim. There is a how to in the "How to" forum on the procedure so you can print it out incase the tech does not know how to do this....

Caraudioholic24 · Post by **Caraudioholic24** » Mon Feb 07, 2011 11:18 pm

sweetness well that will save me a little bit of a headache thanks...

Post by **occasional demons** » Tue Feb 08, 2011 11:05 pm

The only thing I can see with swapping PCM's in the parking lot, is they will have to push your car into the service area, and possibly maneuver it into a bay. I'm sure they could do it in the parking lot with the DRB, but again, it depends on the dealer. I'm sure it isn't going to be until "warmer" weather anyways.

Caraudioholic24 · Post by **Caraudioholic24** » Wed Feb 09, 2011 3:24 am

yea wont be for a while...im hoping to talk to a local friend of mine who works as a dodge tech and see if he can help me out then i wont even have to move the car....win win...

Caraudioholic24 · Post by **Caraudioholic24** » Sun Mar 20, 2011 1:45 pm

Ok getting the final parts for the swap....came across something

I was at a pull yard I needed the horshoe part that holds the slave cyl on..I cam across this large bracket that surrounds the slave cyl and bolts to the trans and poss the block..is there a need for this bracket..structurally...thanks

sidepipe87 · Post by **sidepipe87** » Sun Mar 20, 2011 10:58 pm

If it's the big bracket I'm thinking of underneath the car... no. I don't believe it's going to make a difference. Over-engineering.

Caraudioholic24 · Post by **Caraudioholic24** » Sun Mar 20, 2011 11:06 pm

well I know about the one not being needed that attaches o the oil pan this one almost surrounded the slave cyl...I swa it on an 01 that I pulled that horshoe part from..I had to remove this funky looking bracket to remove the slave cyl???? weird design on both it seems LOL

Caraudioholic24 · Post by **Caraudioholic24** » Sat Apr 02, 2011 7:15 am

Ok if someone can help me out... I finally found an 03 neon R/T PDC harness complete from the computer back....now only question is if this will work with my trans swap since I am using an SXT computer.. want to make sure the pinouts and stuff are the same.... Thanks

gilly02le · Post by **gilly02le** » Sat Apr 02, 2011 8:41 am

that'll work fine. You'll just have an extra plug for the tuning valve in the intake manifold.. Handy if you ever bolt one on, or if you already have one.

Caraudioholic24 · Post by **Caraudioholic24** » Sat Apr 02, 2011 9:06 am

well thats part of the engine harness... this is the harness for the PDC or the under hood fusebox that runs from the computer all the way through the firewall

Post by **occasional demons** » Sat Apr 02, 2011 10:10 am

Should be fine.

The MTV relay circuit should never be powered, as the SXT PCM does not have that programed in.

If you wanted to use the MTV motor connector for something else, the signal wire to the relay coil could be cut on the underside of the PDC, and wired to a switch.

You could cut it anywhere, but under there is out of sight, and keeps it clean looking.

Caraudioholic24 · Post by **Caraudioholic24** » Sat Apr 02, 2011 10:51 am

sweet....score..

as for the mtv motor it came on the engine harness that i got from an rt as well so yes i will hook it up to the relay later on..then to the megasquirt so it will make for a clean install.....thanks again