Ignition switch

 

No, still having the issue. Recently and just for the sake of it i replaced the valve springs on one side and also the map sensor, problem is still there. It drives fine most of the time but it still has that jerking.

From everything i have done, the only thing that seemed to reduce the symptomps have been to remove the cat converter. The problem seems to happen when puting load on the engine while at highway speeds and my theory is that removing the cat converter gave me a few hp gains so the engine doesnt have to work that hard when pushed and that is why is a bit less common now.

At this point i think i will just live with it, i have diagnosed everything i could and changed almost every sensor and other parts and just cannot find what is going on

 

Man that's frustrating. How far did you get into that engine, visually inspect the timing chain, pull the intake? I remember you mentioned you replaced the coil, how about cap, rotor, and did you check out the distributor pick up?

I got that aluminum plenum yesterday so I'm probably gonna do a big tear down this weekend and see if I can find my similar problems. Its frustrating enough that I almost just want to turn the dakota into a beater off road vehicle lol.

 

I changed the coil, sparkplugs, wires, re-routed the wires, changed the distributor cap and also the dist. pickup sensor. I didnt pull the intake but i replaced the plenum plate for an aluminum one many years ago and it still tight and sealed so that is not my problem.

I havent checked the timing chain, its just that its too much work just to check it and i doubt its my issue as if something was bad there i would have issues all the time not just when the engine is loaded at high speeds...

The only working theory i have now is that my muffler may be plugged or something is loose insde it and blocking the exhaust under certain conditions

 

I signed up to this forum just to discuss this problem. I'm having the same problem with my 5.9L, 2000 Dakota R/T. After reading all the posts, I think it's the TPS. Not the sensor itself but one of the grounds. After examining the wiring schematic, it appears that both pin one and pin three are connected to ground. Pin two is signal from the ECU (it's not the ECU, I have two of them and swapping them doesn't fix the problem). So there are two different grounds to be precise. I haven't located both grounds yet, but I'm willing to bet they may be the culprit. Ground S107 and S101. Both say they are connected to the top rear of the engine or rear of the engine. On mine, the engine ground jumps over to the battery which I've been messing with a good bit and rerouting stuff. If the ground on S107 and S101 are okay, then I'd check the ground from the engine to the frame/battery. Most of my ground in the front driver side is looking rusted out in there so it might have something to do with it. If you check pin 2 for resistance to ground and the resistance is really high, then that's a red flag.

Also, mine only has problems on cool or cold days. Hot days everything seems to run okay. Although when I'm sitting at idle, the throttle fluctuates a fair amount regardless of temperature until I've driven it. Hope this helps.

Regards,
PotionX

 

You should start a new thread.