I'm in a little over my head here, and looking for some advice, and possibly a wiring diagram if possible.
Mfgr date- 10/01, Ram 3500, 4x4, 5.9, 47RE. 667,000 miles
Was a super cab long bed dual rear, but was fitted with a small sleeper at some point.
Had some transmission problems previously, changed the servo/transducer and adjusted the band, solved the shifting problem for a while. It's acting funny again now, it doesn't always like to upshift like it should.
The throttle also acts funny, just off idle is fine, then it's not hardly responsive, until just before full throttle. ( I believe my father has adjusted the throttle switch a couple times trying to solve this)
Cluster did the No Bus thing once, a year or two ago, never did it again.
Temp related- at hot idle, it surges/ misses occasionally.
Will only turn on the CEL below 50*F.
With a cheapo actron scanner I can pull P1698, and P1693.
Blink codes I get P1694, P1693, and P1687.
Been researching those, but having trouble making it all fit together in my head. Have also been sniffing out and cleaning grounds.
Now, the real noggin scratcher, and the reason I'm here, and looking for a PCM wiring diagram.
Black PCM connector, closest to the engine, ( C1?) , On pin 23, Orange w/light blue tracer, someone has spliced in a resistor, and what appears to be a capacitor on a ground jumper.
Simplified- from the plug at the PCM, wire is branched through a resistor to the harness, and a capacitor to batt ground. ( See photo)
With a volt meter, at the splice, KOEO, PCM side reads .22 volts, harness side of resistor reads .30 volts. No continuity between the capacitor? and the ground jumper wire
Any ideas what this wire does? Any ideas what this modification was for?
Sorry for being long winded, but I tried to include everything.
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