94 5.9 Magnum wiring diagrams

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94 5.9 Magnum wiring diagrams

Postby liftarc » Sat Apr 30, 2016 6:26 pm

I recently swapped a 94 5.9 magnum into my Ramcharger and Im finally getting around to adding the second O2 sensor to correct the check engine light. I need to see how to tie into the wiring, if it splices into the same power and ground just different signal wires. If someone has a 94 fsm and they wouldnt mind looking in the gasser section that would be a huge help, I havent found the diagrams online. Needs to pass smog in a few weeks... Thank you
92 D350 club cab flatbed dually-201k G360, NP205,D60 swap soon
92 Ramcharger 5.9 Magnum, 46rh, NP241-238k
liftarc
fuel screw!!!!
 
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Re: 94 5.9 Magnum wiring diagrams

Postby liftarc » Mon May 23, 2016 4:22 pm

To answer my own question:

Power, ground and reference are all spliced to the same pcm pins though ground is routed to engine block ground terminal as a common ground with pcm. Sensor signal is the only different wire.

Existing 92 5.2 O2 sensor becomes right bank sensor for 94 5.9, add left bank sensor pin to pcm connector, wire and done....
92 D350 club cab flatbed dually-201k G360, NP205,D60 swap soon
92 Ramcharger 5.9 Magnum, 46rh, NP241-238k
liftarc
fuel screw!!!!
 
Posts: 96
Joined: Thu Mar 03, 2016 1:28 pm
Location: State of Jefferson

Re: 94 5.9 Magnum wiring diagrams

Postby DodgeFreak » Mon May 23, 2016 8:04 pm

I guess I didn't know they used 2 o2 sensors I thought it was just one. What did everything come out of?
92 D350 Cab and Chassis. Auto stock, wiring gremlins. 330k miles
92 W250 Ext cab rotted completely out. Auto, pump maxed, 215 ppump nozzles, Denny T2 pin.
85 D350 single wheel, converted to cummins, getrag, turned up 2 turns and afc screw flush.
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Re: 94 5.9 Magnum wiring diagrams

Postby liftarc » Wed May 25, 2016 7:00 pm

Truck is a 92 RC that had a 5.2 magnum mpfi stock. Now has a 5.9 magnum from a 94 ram 2500.

It has 92 5.2 intake, fuel rails, tb, wiring and 94 5.9 pcm and dist. The 94 5.9 had 2 O2 sensors, one on each tube of the y pipe right after manifolds. I think its supposed to have 2 cats to but Im running a single like the 5.2 to hopefully sneak the swap under the radar. I used a 3" magnaflow cat, 3" 304 sanitary tube and no muffler, dumps behind axle.

I also cut out the slip joint between y pipe and cat and welded in 3" 304 v-band flanges because @$!# that slip crap.
92 D350 club cab flatbed dually-201k G360, NP205,D60 swap soon
92 Ramcharger 5.9 Magnum, 46rh, NP241-238k
liftarc
fuel screw!!!!
 
Posts: 96
Joined: Thu Mar 03, 2016 1:28 pm
Location: State of Jefferson
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