Hmm. so maybe the sensor will take care of 2 issues at once. Couldnt get that lucky. lol

 

We have twin trucks, try tr tps, I changed mine with no trouble

 

Well changed the TPS and the shifting appears to be smoother but the lack of power is still there. I can stomp it at any speed and there is kick to it. Just slowly gains speed.

 

Went ahead and changed plugs will I was under there. Plugs were so frozen I had to use a bar on a few to break them loose. When I got them out someone had gapped the old ones to .075. According the the service manual they should be at .040. I put them at .040. Still lacking the power but seems to be getting better little by little.

 

With how cheap plugs are. Ill never re gap them I dont like to. Should of spent like 25-30.00 for plugs and called it a day. How is pulling out? Is it very sluggish or is pretty normal for a v6

 

Should have said that different. I didn't re-use the old ones. Meant I gapped new ones .040. It has not power. At any time I can stomp on it and the tach climbs but it slowly gains speed. Not sure what to check next. It is almost as if something is plugged up. Maybe Cat?

 

I also have the 2003 with the 3.9. Check your Distributor cap and rotor. Mine were original with 175,000 miles on them and they were ate up. I do not know how it even ran. I bought the Borg Warner from O'Reiley's and now she runs like a champ. Less that $20 if I remember right. Good luck.

 

That is what was the next thing I was going to change. I am hoping that helps. Strange thing about it is, I was leaving work yesterday and had to get on it and it kicked in. First time it has done it. Tried it again and nothing.

 

A bad TPS can throw a code. For example, my bad TPS cause p0201-208 error codes.

 

Yea changed to TPS.