early 2nd gen, run w/o a PCM? - Competition Diesel.Com

kawi600 · 06-08-2021, 05:51 PM

Ive got a 95 dodge with 47RH. its got some computer stuff on the firewall which Im assuming was just for controlling the shift points for the lockup and overdrive. Anyone know if thats right?
Im sure its possible to run the truck without that module if I manually shifted lockup and overdrive with switches but is there anything else the PCM does that I need to worry about? Like voltage regulation or heater relay engagement?

displacedtexan · 06-09-2021, 07:40 PM

It would run...

But the PCM controls the alternator, the grid heaters, the AC compressor, most of the gauges, cruise...

BigPapa · 06-09-2021, 07:51 PM

As usual, the loud guy is correct.

displacedtexan · 06-10-2021, 10:08 PM

Quote:

Originally Posted by BigPapa

As usual, the loud guy is correct.

06-08-2021, 05:51 PM	#1
kawi600 Name: kawi600 Title: got Coal for Christmas Status: Not Here Join Date: Jun 2008 Location: communist urban hell Member`s Gallery Posts: 861	early 2nd gen, run w/o a PCM? Ive got a 95 dodge with 47RH. its got some computer stuff on the firewall which Im assuming was just for controlling the shift points for the lockup and overdrive. Anyone know if thats right? Im sure its possible to run the truck without that module if I manually shifted lockup and overdrive with switches but is there anything else the PCM does that I need to worry about? Like voltage regulation or heater relay engagement? __________________ Psalm 144 Psalm 37:10,11 Isaiah 65:20

06-09-2021, 07:40 PM	#2
displacedtexan Name: displacedtexan Title: $500 PREMIUM MEMBER Status: Not Here Join Date: Feb 2008 Location: Mobilehoma Member`s Gallery Posts: 13,876	It would run... But the PCM controls the alternator, the grid heaters, the AC compressor, most of the gauges, cruise... __________________ I talk loud.

06-09-2021, 07:51 PM	#3
BigPapa Name: BigPapa Title: Truckless Status: Not Here Join Date: Jan 2008 Location: Springfield, TN Member`s Gallery Posts: 5,038	As usual, the loud guy is correct. __________________ Scott 2003 Avalanche Z71 Common sense is like deodorant. The people that need it most never use it.