Forum search didn't yield. PCM questions

[SourMashII]

I have conflicting reports.

DPTuners in North Carolina telle me for $75 (reflashing fee)
they will create a PCM that has the PATS killed, and will have the speedo pick up its signal off the Pumpkin ABS VSS.
As well as curing other "incorect" parameters created by my manual swap.

Speed-O-Motive in Fruitland, ID.. claims to work with everything from a Focus to a 6.7 PSD, says that is incorrect information, and for $425, they will rewire my truck, to have the former VSS transmission input for the speedo, read off the PCM's input from the ABS tone ring.< He (Speed o motive) made it sound more complex than just switching input designation in the PCM, as DP said it could be done, SpeedO also claims to correct any driveability issues, write the performance tunes, and kill the Emissions readings, so that it will pass smog, and be able to support free flowing exhaust. e.g 2 or 4 cat delete.

Wife had sticker shock at the second, and then I googled PCM tuning software.

< I need to do that to this truck to show it who the daddy is, and make it .

 

[Thermo]

CLyde, are we talking about a 97-98 truck here or a 99+ truck? They are both correct ironically. The 97-98 trucks could get away with only using the rear ABS sensor, but then, why that when you have the VSS gear in the truck already for the speedo. if you have a 99+ truck then you can use the rear diff speed sensor to do the speedo.

I guess I have to ask what you are attempting to do that would require all this modification? unless you are going to a solid axle swap, all of this should not be required as the re-programming to eliminate the emmission stuff is all internal to the computer. No re-wiring should be needed.

 

[SourMashII]

CLyde, are we talking about a 97-98 truck here or a 99+ truck?

1998 5.4 Truck

They are both correct ironically. The 97-98 trucks could get away with only using the rear ABS sensor, but then, why that when you have the VSS gear in the truck already for the speedo. if you have a 99+ truck then you can use the rear diff speed sensor to do the speedo.

So I could pull a 99 ECM from the boneyard, and have it reflashed to make my 98 happy? And if I was gonna do that, couldn't I just run a 99 SuperDuty PCM.. S-Duty has no PATS, and pulls speedo from Diff.

I guess I have to ask what you are attempting to do that would require all this modification? unless you are going to a solid axle swap, all of this should not be required as the re-programming to eliminate the emmission stuff is all internal to the computer. No re-wiring should be needed.

http://expeditionforum.com/showthread.php?t=12336&highlight=swap


Did that ^. No speedo, truck isn't happy, tail pipe is sooty.

Trip rev limiter at 4k, and can trip accelerating around 25~ if giving more than 1/4-1/3 throttle. wunnnnnnnnnn ta tat tat wunnnnnnnnnnnnnn; then when 4k rolls around :wunn tat wunn tat wunntat... Watch the you tube in the swap thread, you can hear it, follow the source to you tube, watch my other one, you can hear it there too. F bomb towards the end of the one I didn't link on this site.

 

[Thermo]

Clyde, there are wiring differences between the 97-98 trucks and the 99+ trucks, so, you can't slide a 99+ PCM into a 97-98 truck. Now, taking say a 98 F-250 PCM from a truck with a 5.4L motor that is under the hood, you can possibly make that work. The wiring for that should be the same. The big thing there is you would have to get to the PATS module and completely bypass the module. Leaving it in the circuit is going to lead to tons of problems. Granted, normally the solution that I have seen done in the past is that people open up the steering column and mount the glass chip from inside of a key to the key tumbler. This is enough to allow the truck to start using a non-PATS key.

 

[Thermo]

Clyde, I think your bigger problem at the moment is you are actually needing say a PCM from a 03-04 truck that came with the ZF6 tranny. The older PCMs are only designed for a 4 or 5 speed tranny. So, you are going to have issues with not having the right pinouts to the tranny. I didn't read the whole story you have with the tranny swap. The other thing that I see that is in your future is doing a pin by pin comparison of what you have in the truck and what the computer needs. It is looking to me like you have a few wires that need to be in different positions. For example, your 98 originally had the speedo signal coming from the VSS gear on the tranny. With what you are trying to do, you need to get the speedo signal from the ABS module, which would require a 99+ ABS module along with new wiring running between the ABS module and the computer. So, grabbing a harness from an 03+ truck may be your best option there. But, there will be other things like that that will need to be overcome.

I can see where the truck is confused and will limit the engine RPM to 4K. And I am sure the tranny is not wanting to shift at this moment. There are too many wires that are not in their correct spots.

 

[SourMashII]

And I am sure the tranny is not wanting to shift at this moment. There are too many wires that are not in their correct spots.

That confuses me as the tranny has only reverse lights that come off of it.

Granny through overdrive, I can run it right out to 130mph.

 

[Thermo]

Clyde, that may be the issue. The ZF6 tranny to my knowledge has electronic shift in the tranny. Now, it is designed to be able to shift without the computer (helps you get out of a situation where the computer completely dies on you), but the shifts are going to be very firm and cause the ECM to toss all sorts of codes. But, you should have a harness with the shifting commands being sent to it.

Just because I am not 100% sure here, the ZF6 tranny has only a 2 wire plug or a 5 wire plug going to it? Or is it a different number wire plug. I say this as if you only have the reverse switch on the tranny, you would only have 2 wires. If you have a 5 wire plug, you have the reverse lights using 2 wires, you have a power wire, and then 2 wires for the CAN wires. The CAN wires send digitally signatured commands to the tranny to do specific tasks. Starting in about 2003, Ford went to the CAN system and if you are using even a 2002 ECM, it won't have the CAN network, which is then leaving the tranny to "think for itself".

 

[SourMashII]

I am confused I guess, how a completely manual tranny needs input from the PCM.

2 wire plug for reverse lights on pass side.

 

[SourMashII]

3 of my 5 codes are the ECM not reading the automatic....
the other 2 are the 02 I dicked installing everything.

o2 dicked would partially explain the soot. Will come back with an edit and list the codes.

PO743
Definition:
TCC circuit condition
Explanation:
ECM energized the ICC solenoid and detected no voltage drop on the circuit

P0750
Definition:
Shift solenoid circuit condition
Explanation:
ECM energized solenoid and detected an open or shorted condition

PO755
Definition
Shift Solenoid 2 circuit condition
Explanation:
ECM energized solenoid and detected an open shorted condition

 

[toms89]

I think Thermo may be confusing the ZF6 with an automatic tranny.

I would go for the reflash option but on the condition if everything does not work properly... you get your money back. I do know from my limited understanding thus far with my programming software that there are many parameters(scalars) that can be reset for manual tranny. There is also a simple on/off parameter(scalar) in the tune for pats.

 

[Thermo]

Clyde, based on the codes that you are seeing for the tranny, the computer is doing a check for the solenoids in an automatic tranny. I was assuming that it was an automatic tranny. If it is a manual tranny, then a rewiring of the ECM will be required to eliminate the need for the computer to go looking for the tranny. Granted, it may take nothing more than finding an appropriate size resistor (probably something around a 10 ohm, 20 watt resistor) to trick the computer into seeing a load there.

 

[SourMashII]

So assuming I have tricked the brain into seeing a load, I then need to update to a 99 or newer ABS module to re gain speedo?

And then Monstro is happy?

 

[rburch]

So basically you need a 98 SD manual ecu?

 

[toms89]

The ecu from the factory is programmed for auto tranny!! Go figure.. It is not testing for but relying on these sensors and outputs to control the tranny. Now if it is reprogrammed for manual tranny it will ignore these various sensors and controls as they would no longer exist. I am trying to tell you that the ecu can be reprogrammed for manual tranny. Found this out studying my SCT ford pro racer software and thought it was of interest due to your original thread at the time. That was the reason for my question about the ecu before you finished in your original tranny swap thread. I knew you would have issues with factory programming due to what I had read. But believe what you may.. just trying to help.

http://www.fordexpeditionforum.com/showthread.php?t=12336&highlight=zf6+swap&page=3

 

[SourMashII]

What you are saying I am hearing. When it is reprogrammed, can it be made to have provisions for speedometer reading off the ABS VCC as DP said it could?

That would change many things for me.

Secondly, so as not to have down time for a week, can I sub in a SD ECM (1999 Manual Trans 5.4) to limp around as adequarely well as I am right now?

Thirdly, PATS. I understand that can be switched off, or left alone in my ECM. It's a non counter if I continue to use my ECM, will have DP kill it, just because.
But.. the SD in 1999 was not a PATS equipped vehicle, so if the answer to the last question is yes, will the PATS not existing in the SuperDuty ECM be functionally the same as it being turned off in my ECM?

 

[toms89]

What you are saying I am hearing. When it is reprogrammed, can it be made to have provisions for speedometer reading off the ABS VCC as DP said it could?

That would change many things for me.

Secondly, so as not to have down time for a week, can I sub in a SD ECM (1999 Manual Trans 5.4) to limp around as adequarely well as I am right now?

Thirdly, PATS. I understand that can be switched off, or left alone in my ECM. It's a non counter if I continue to use my ECM, will have DP kill it, just because.
But.. the SD in 1999 was not a PATS equipped vehicle, so if the answer to the last question is yes, will the PATS not existing in the SuperDuty ECM be functionally the same as it being turned off in my ECM?

I do not know as far as the speedometer reading. I would have to trust the experienced programmers on that. I did not realize you would have to ship your ecm away for this. That is a major inconvenience. I have SCT X3 flash programmer so I can flash ecu immediately. They can actually email you tunes with this but then your cost go up by the amount of the programmer..($380)

 

[rburch]

What you are saying I am hearing. When it is reprogrammed, can it be made to have provisions for speedometer reading off the ABS VCC as DP said it could?

That would change many things for me.

Secondly, so as not to have down time for a week, can I sub in a SD ECM (1999 Manual Trans 5.4) to limp around as adequarely well as I am right now?

Thirdly, PATS. I understand that can be switched off, or left alone in my ECM. It's a non counter if I continue to use my ECM, will have DP kill it, just because.
But.. the SD in 1999 was not a PATS equipped vehicle, so if the answer to the last question is yes, will the PATS not existing in the SuperDuty ECM be functionally the same as it being turned off in my ECM?

Yes it should be the same because it was not offered therefore it wouldnt even be wired for it and wouldnt be working and the ecu wouldnt be looking for PATS.