I changed my plugs and did the boost by-pass mod about 2 days ago and truck ran perfict. now today, its having a hard time shifting into 2nd and slips at WOT. i undid the boost by-pass thinking that was the problem, but no luck... then i thouhgt maybe a vacume leek, but i cant hear or see one... or maybe it had something to do with all the sensors i unhooked on the drivers side changing the plugs... has anyone had this same problem? can some one please help??? by the way. the tran fluid is ok, and i did a search and see alot about tps with this problem. where is the tps located?

 

If the tranny is slipping at wot? I believe it's a tranny issue. Look up "Gregg Evans" and he'll help you.

Personally I would'nt touch anything else electic til you get this figured out. Sometimes a guy can make it much worse than it already is.

(The TPS is located on your throttle body. Front side with two wires coming out if it)

Rich

 

I just went for a long drive and after shuting it off its shifting normal. Now there's something other than the supercharger making a wining noise and the over drive light keeps flashing on and off. I thinking it almost has to be something electrical. A sensor or something. I really hope someone here has already been through this so they can give me some advice. I even tryed disconnecting the battery for a few minutes to see if that would work. It didn't! I have a predator tune. Don't know if that info will help any.

 

I just had to replace the pump in my toyota beater, it was making a whining noise and leaking fluid past the torque converter. Major pita to pull a transaxle!! Hopefully that's not your problem, but on a good note, our transmissions are easier to remove!!
Best of Luck,
Bryan