I have a 2005 3.8 NA with 80k miles. Recently began shifting roughly from 1st to 2nd, 2nd to 3rd etc. It is sporadic and only seems to happen when the car has been driven at least 30 minutes. Also seems to happen when the weather is warmer (70-75F).

I changed filter and fluid. No help with the problem. Don't seem to have any codes.

Ideas?

John

Consider adding seafoam transfix, drive 50 miles, then do another fluid change and this time to Dextron VI, also add a shift kit while doing the fluid change. Had your exact problem 30k miles ago and the above fixed it for me. Trans is running better know than it did after the fluid change- it is actually getting stronger with time/ miles.

Had the same problem with mine, probably a malfunctioning PCS. Installed a shift kit a couple of months ago and the problem went away. Check with BillBoost or Danthurs to see if they have any shift kits for sale.

i have one kit and i think Bill has one. waiting on a member to buy it. cant wait to long though. need it sent out and returned fast so others can get theres

Little new to the tranny part of the game. Not familiar with PCS or shift kit? Difficult to install?

the shift kits Bill and I make are as easy as they come.

How much is the shift kit?

Do you have to remove the transmission in order to install the shift kit? What does the kit consist of?

No all you have to do is take off the pan on he bottom of the trans and take 4 or 5 bolts out of the accumulator and then replace everything.