01 sureges real bad! Help

[Kman9090]

Was driving down the highway and all of a sudden the truck starts surging real bad, then dead pedal, then full power and more surging. Throwing abunch of codes but most of them are low circuit voltage codes, and TPS. My only guess is its the PCM anhybody else have any ideas???

 

[12vriviera]

Or a bad battery and tps issue

 

[07srt6]

Or vp problem

 

[Kman9090]

Dont think its a vp issue, it starts and runs fine

 

[jesnic]

Does it rev up on it's own at a stop? ECM controls vp and motor controls. Pcm controls voltage and signal input.

 

[cummin get it]

Tps sensor. Try cleaning the plug-in with electronics cleaner.

 

[2001cummins]

TPS sounds like what mine was doing. I also thought it was the pump.

 

[drdiesel12v]

I've got an 02 6spd doing the same thing. Only code I got was P0122 low voltage apps. Replaced apps still the same thing and same code. Also my cam sensor isn't showing a reading on my scanner. I replaced that too same thing. I'm confused. I went on mopar1973man's website and searched the code and did the diagnostics it showed for the code and I come down to a bad ecm!? Never heard that before.

Hopefully we can both get our issues figured out.

 

[RyanH]

I would check for broken wires and shorts to ground first.

 

[drdiesel12v]

Mopar1973Man's Dodge Cummins Articles - P0122 APPS Sensor Signal Voltage Too Low

If I do test #3 I get continuity between the two. If I unplug harness from ECM I do not have continuity like its suppose to be.

Already had fun and cleaned the grounds. What weird is my tps acts up only when running koeo tps acts normal. I even took the belt off thinking it might have been the alternator messing things up.

 

[Kman9090]

thinking its the PCM because its throwing 12 codes and all of them are to do with low circuit voltage, my old pulling truck did the same thing at it was the PCM, I took it up to Gilmore so should know what it is before to long