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1994.5 - 1997 7.3L Power Stroke Diesel  

OBD link - one more try.

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Old May 12, 2016 | 09:56 PM
  #1  
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OBD link - one more try.

I've never been able to get Torque to communicate with the PCM. I also have a Autel Maxidiag 801 pro, that seems to connect to some degree but won't actually do anything productive. I've also got an odd starting issue where it lopes VERY badly without a slight throttle input. I do mean slight, sometimes not even enough to raise the RPM.

So today I wanted to chase my suspicions of my TS-6 interfering. I pulled it out and viola, starts perfect. But still no data link from torque or my scanner. My scanner has a "component check" and that makes some relays click somewhere under the hood, and cycles the WTS light. So there is some sort of link.....

I know plenty of guys run Torque, but right now, I'm scared to even drop the $$$ on something like edge or AE b/c I'm afraid I have some sort of communication failure with the PCM. ANY ideas?
 
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Old May 12, 2016 | 10:11 PM
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Your chip might be tuned for a 5speed. If so its no recognizing the TRS causing it to lope.
Put the chip back and start in N see if it stops loping
 
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Old May 12, 2016 | 10:17 PM
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I'll try that, but... it definitely has some influence over shift points and TC lock up.
 
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Old May 13, 2016 | 10:50 PM
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Tried a neutral start. No change. The hunt continues I suppose.
 
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Old May 14, 2016 | 06:55 AM
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If it only does it with the chip then something is wrong with it or the tuning
 
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Old May 14, 2016 | 08:50 AM
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Originally Posted by fordpride
If it only does it with the chip then something is wrong with it or the tuning
Agreed. The chip does affect the mapping of the throttle pedal it seems.

I REAALLYYY wish I could figure out whsts up with my OBD comms.
 
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Old May 14, 2016 | 09:35 AM
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Originally Posted by finallyo3gt
Agreed. The chip does affect the mapping of the throttle pedal it seems.

I REAALLYYY wish I could figure out whsts up with my OBD comms.
Have you gotten the device to "pair" with your phone or tablet?
I have torque and I will say it's a finikey deal.
 
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Old May 14, 2016 | 09:39 AM
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Yes. In the torque status all green except comms with pcm. Multiple attempts
 
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Old May 14, 2016 | 09:51 AM
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From: Livoina,La
Have you checked the fuse ?
The cig lighter fuse controls the obdII port
 
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Old May 14, 2016 | 10:06 AM
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I have checked for voltage per wiring diagrams, and done ring outs from the PCM plug to the OBDII. Check fuses (power port and cig both in use, so I'd know if they popped), and checked voltage again. The scan tool will power up as soon as I plug it in. Also, when I run a "component check" on my scanner, I hear some relays click, and my WTS light cycles, so there is some communication to something..haha.
 
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Old May 14, 2016 | 10:07 AM
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I wondered about communication protocols. Is it possible my truck is NOT OBD enabled?? Would that cause the issues I'm having?
 
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