can anyone help me? my car wont down shift unless i floor it to the metal. that cant be right. also, once it does manage to down shift, i can feel the powerband switching around like if the timing is adjusting or something. i have an injen intake ws superflow y pipe and magnaflow high flow cat with stock catback for now. any advice ????

 

Floor it alot? Then maybe seek a new/used tranny.

Or check the fluid.

 

the trans. fluid is clean and in good condition and they are at the level they should be... could this be a tps, maf or knock sensor problem?

 

The only time I have trouble downshifting in an auto, is when flooring from 50-60+. It tends to goto 2nd from 3rd, which is not good. I usually let up at that point, leading the tranny to search for the correct gear based on my foot-input. :P If from a straight-line accel, it shifts normally...1.2.3.



I dunno...bump.

 

You have a 99, the power surge your feeling at WOT is most likely a failing coil. That might be causing your tranny to act funny too.

 

damn a bra ona max! take dat ish off! this aint the 90's

 

*sigh* ...