A/C through e38 pcm LS7
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From: Potomac, MD
A/C through e38 pcm LS7 Has anyone run aftermaret a/c through the E38 pcm?
Looking at the C6 ls7 a/c schematics the A/C request comes to the pcm from the a/c module then bcm via serial data.
So I was wondering if its possible without the bcm or could you use a bcm as well.
The earlier pcms allowed for manual operation of ac.
any thoughts appreciated
Looking at the C6 ls7 a/c schematics the A/C request comes to the pcm from the a/c module then bcm via serial data.
So I was wondering if its possible without the bcm or could you use a bcm as well.
The earlier pcms allowed for manual operation of ac.
any thoughts appreciated
You would have to also use the A/C module, because to the best of my knowledge there's no way to reproduce the signal that it sends to the PCM via the serial data line. I've been fighting the same problem on my 6.0 conversion. If you could mount that module/switch, and the pressure sensors, it should work.
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Launching!
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From: Potomac, MD
thanks. looking at schematic looks like ac module goes to bcm then serial data to PCM. I wonder if you could use these modules just for AC. I guess the alternative would be use an ls1 PCM
w 58to 24 convertor
w 58to 24 convertor
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Thread Starter
Launching!
Joined: Jul 2004
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From: Potomac, MD
Maybe I'll look at using the LS1 pcm. Easier tuning too w/ ve tables.
Which LS1 is considered best these days?
What TB would you use? and DBW pedal?
Dang just finished my E38 harness too!
thanks for the advice
dave
Which LS1 is considered best these days?
What TB would you use? and DBW pedal?
Dang just finished my E38 harness too!
thanks for the advice
dave
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Launching!
Joined: Jul 2004
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From: Potomac, MD
That would be way too easy.
Actually taking advantage of the PCM AC controls makes for a smoother operating system. The PCM does things like bump up the idle before clutch is engaged.
I have it wired this way now with the LS1 and was hoping to do it with the LS7 and E38 PCM as well. The increasing sophistication of the systems with climate control, zoning etc, makes it much more challenging.
Actually taking advantage of the PCM AC controls makes for a smoother operating system. The PCM does things like bump up the idle before clutch is engaged.I have it wired this way now with the LS1 and was hoping to do it with the LS7 and E38 PCM as well. The increasing sophistication of the systems with climate control, zoning etc, makes it much more challenging.
