Differences tween 89-91.5 vs 91.5-93 wiring harness

Does it have spark? And other questions...

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Differences tween 89-91.5 vs 91.5-93 wiring harness

Postby 2uphill » Mon Jul 01, 2019 10:46 am

Picked up another crew cab (82) and want to upgrade with Cummins and am wanting to update 82 with 1st gen pcs. parts to be same ( heater/AC, ECM, etc.,etc.). That way I only need to trouble shoot one animal if and when issues come up. I know I will need to swap column and a few things, but need to know if any advantage (and disadvantages) intercooled wiring vs non intercooled. I have donor trucks for both...hope this makes sense...thks in advance
90 d350, SRW, 2wd, 727, stock, except banks i/c, 85K
84 w350 crew cab, I/c 89, s300, 727, 4x4, 130K
90 w350cc, 3.54, getrag, 125K
82 d350 crew cab project
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2uphill
fuel screw!!!!
 
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Re: Differences tween 89-91.5 vs 91.5-93 wiring harness

Postby 2uphill » Mon Jul 01, 2019 4:56 pm

I assume (which has got me in trouble before) there’s not much difference, my 89 doesn’t have the ecm/pcm(?) module and my 92 does
90 d350, SRW, 2wd, 727, stock, except banks i/c, 85K
84 w350 crew cab, I/c 89, s300, 727, 4x4, 130K
90 w350cc, 3.54, getrag, 125K
82 d350 crew cab project
User avatar
2uphill
fuel screw!!!!
 
Posts: 72
Joined: Thu Aug 27, 2015 11:18 am
Location: Armpit of Mesa county

Re: Differences tween 89-91.5 vs 91.5-93 wiring harness

Postby cougar » Mon Jul 08, 2019 8:48 am

89 through 91 are the simplest. 91.5 is the same, just added TPS for A518 overdrive. 92 and 93 are more PCM dependent moving the voltage regulator onboard.
RIP 91.5 W250 5 speed. The great experiment.
92 W250 HD 47RH with Compushift. Upgraded H1C to 60/60/16, Scheid Lightning VE, 60# valve springs, DAP 7X.010 injectors, 4" DE exhaust.
01 2500 "the work truck".
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14mm rotor
 
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