Done with the 4l80 Swap!
Done with the 4l80 Swap! The 80 swap has been done and we fired up the car to see if she would move and she did. However not in the manner we could have hoped for. Here is what is happening. Ill give some information
4l60e car formerly. Now has jakes stage 5 D3 transbrake late model 80e. (97+)
When you put the car into OD or 3rd or 2nd...that is the gear the car is in and moves in. If you shift it manually it will go into gear and drive almost like its a FMVB. This is supposed to be electronically controlled. When you hit the transbrake button to put it into reverse it will lunge backwards and stop just as suddenly.
I am not using a segment swap. I am using a wiring harness adapter from frost tuning.... http://www.tunedbyfrost.com/products_dev1.htm
My question is simply, has anyone ever had this issue, and are there any codes that could be causing this to happen. Not sure if it makes a difference, but I have deleted, traction control, ABS and cruise and everything from the car.
Thanks in advance.
4l60e car formerly. Now has jakes stage 5 D3 transbrake late model 80e. (97+)
When you put the car into OD or 3rd or 2nd...that is the gear the car is in and moves in. If you shift it manually it will go into gear and drive almost like its a FMVB. This is supposed to be electronically controlled. When you hit the transbrake button to put it into reverse it will lunge backwards and stop just as suddenly.
I am not using a segment swap. I am using a wiring harness adapter from frost tuning.... http://www.tunedbyfrost.com/products_dev1.htm
My question is simply, has anyone ever had this issue, and are there any codes that could be causing this to happen. Not sure if it makes a difference, but I have deleted, traction control, ABS and cruise and everything from the car.
Thanks in advance.
the tuner will know by tomorrow and hopefully i will have some more to go on. maybe i will get lucky and it will just be a few codes that need to be taken out. will update as information is made available to me.
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Verdad Gallardo RPP used their Snap On scan tool to scan for codes and it showed nothing. I found the info frost had up on the EFI forums and had a discussion at length with my tuner who may be able to ride over to RPP tomorrow and see what he can find out. Slow67 said it was possible to tune the car to act like FMVB. The tuner said it was also a possibility that a harness/wire was loose inside that he had seen this before and it was a simple pan pull away from working. There are a ton of possibilities. It'd be nice to have Jake and them in touch with one another to come together and troubleshoot so it can be on the dyno sunday.
Burken 01, you should join the boosted lsx page. i was looking for you on there the other day.
Burken 01, you should join the boosted lsx page. i was looking for you on there the other day.
Last edited by I8UR4RD; Mar 7, 2014 at 06:29 PM.
RPP used their Snap On scan tool to scan for codes and it showed nothing. I found the info frost had up on the EFI forums and had a discussion at length with my tuner who may be able to ride over to RPP tomorrow and see what he can find out. Slow67 said it was possible to tune the car to act like FMVB. The tuner said it was also a possibility that a harness/wire was loose inside that he had seen this before and it was a simple pan pull away from working. There are a ton of possibilities. It'd be nice to have Jake and them in touch with one another to come together and troubleshoot so it can be on the dyno sunday.
Burken 01, you should join the boosted lsx page. i was looking for you on there the other day.
he did say that it showed the car being in second gear not matter what gear the car was in. were wondering if the range sensor is even needed.
Last edited by I8UR4RD; Mar 7, 2014 at 07:20 PM.
yeah from what i can tell "limp mode" is exactly what it is. in reading some other threads describing that problem.....several people also reported no codes being thrown even after pulling off the connectors. It is all stuff that needs to be checked with a meter or engaged manually with HPT.
That is why I sent Jake a PM just now trying to get him and the tuner on the phone together while the car is hooked up to a computer and work together on the phone to resolve the issue so I can put some power through that badboy. I think between the two they would have it narrowed down if not solved in a few hours.
That is why I sent Jake a PM just now trying to get him and the tuner on the phone together while the car is hooked up to a computer and work together on the phone to resolve the issue so I can put some power through that badboy. I think between the two they would have it narrowed down if not solved in a few hours.
http://forum.efilive.com/showthread....-compatibility
and here is something shortuning posted earlier.
and here is something shortuning posted earlier.
Last edited by I8UR4RD; Mar 8, 2014 at 09:22 AM.
Doing that is a waste of money. The stock ecm will control it. It could be a number of things OP. My care would go into limp mode when it didn't see 12v ignition to the solenoids. Its probably a wiring issue, or tune. Did the tuner turn off the particular codes in the ecm that are required to run a 80 on a 60 tune with the relays? If those aren't off then it will do this also.
Doing that is a waste of money. The stock ecm will control it. It could be a number of things OP. My care would go into limp mode when it didn't see 12v ignition to the solenoids. Its probably a wiring issue, or tune. Did the tuner turn off the particular codes in the ecm that are required to run a 80 on a 60 tune with the relays? If those aren't off then it will do this also.
FormerVendor
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From: Dyno Tuning in KY
Also wanted to point out that the EFILive link posted is for a newer Gen4 application with a TCM (transmission control module). The Gen3 applications have the transmission control built into the PCM (powertrain control module, ie engine and trans).
The transmission is manually going into the forward gears fine manually. Reverse is not functioning correctly. I had limited time with the car over the weekend but the changes recommended were uploaded and nothing changed. I'm thinking it's a good idea to ditch the harness crap and just 80e segment swap the PCM like I always have done in the past. I have access to all the TCC tables to prevent the unlocking at closed throttle and the shifting issues that used to be associated with an 80e file. None of those issues are an issue anymore.
The transmission is manually going into the forward gears fine manually. Reverse is not functioning correctly. I had limited time with the car over the weekend but the changes recommended were uploaded and nothing changed. I'm thinking it's a good idea to ditch the harness crap and just 80e segment swap the PCM like I always have done in the past. I have access to all the TCC tables to prevent the unlocking at closed throttle and the shifting issues that used to be associated with an 80e file. None of those issues are an issue anymore.
With the D3 transbrake, reverse is a dedicated circuit (same circuit as the transbrake) that isn't tied to PCM control at all. A stock 4L80E also works similarly, you will have reverse with nothing plugged in.
It sounds to me as if something is mis-wired, activating the transbrake/reverse when it shouldn't be, or not activating it properly, like it's setting off a circuit breaker shortly after engagement.
If 3rd gear works, and you have engine braking in manual 1st gear on decel, everything internally is working for reverse
If it locks up when engaging the reverse, it would point to a burnt forward clutch which we've seen when one has been low on fluid or not enough pressure in the tune causes low fluid pressure. Once it's welded together, you will not have reverse.
You may try tuning it to maximum pressure to eliminate variables until you get it sorted out.
Also,
If memory serves, this is a unit we shipped some time ago. I would confirm the pinout of the D3 brake wiring, we have made some changes to that since we introduced it.
Also, what environment was the trans in while awaiting install?
It sounds to me as if something is mis-wired, activating the transbrake/reverse when it shouldn't be, or not activating it properly, like it's setting off a circuit breaker shortly after engagement.
If 3rd gear works, and you have engine braking in manual 1st gear on decel, everything internally is working for reverse
If it locks up when engaging the reverse, it would point to a burnt forward clutch which we've seen when one has been low on fluid or not enough pressure in the tune causes low fluid pressure. Once it's welded together, you will not have reverse.
You may try tuning it to maximum pressure to eliminate variables until you get it sorted out.
Also,
If memory serves, this is a unit we shipped some time ago. I would confirm the pinout of the D3 brake wiring, we have made some changes to that since we introduced it.
Also, what environment was the trans in while awaiting install?