I have a 89 wrangler that has the complete engine, harness, and pcm from 98 Durango. When you mash the gas from an idle it stumbles at 2000 rpm. If you hold it, it revs past it. If you accelerate slow it goes past it.

While driving, if you pushed the throttle till it stumbles it looses power. But if you back out a hair, it will rev past it. Seems like an ignition timing advance issue. But I am unfamiliar with the 5.9 magnum.

Thanks in advance for any help n suggestions.

 

Tps

 

Could be a TPS or maybe even an ignition problem. Do a good tuneup on it (plugs, wires, cap, and rotor).

 

myMoney is on the tps...When going bad they act a fool like that

 

It has realitivly new plugs an wires, I pulled cap, was pretty decent looking n dry.

Were is tps?? Pics with arrow? Any way to test it? I'm sure I could find it if I search, but figure I'd ask. I'm new to dodge n 5.9 mag.

Is there supposed to be mass air sensor? There is one on the intake, but I wasn't sure were the intake came from. I found 2 plugs that looked like they would fit, but didn't. Its tuff with a transplant like this, not sure what some of the plugs went to. Thanks again for the help.

 

Not sure if the pic loaded, but here it is. Used dodge column n dash. Entire harness was pulled from headlights to tail lights

 

The TPS is the one with the white connector in this picture. It's on the driver's side of the throttle body.

 

Thank You.