Acceleration problem above 35 mph...

[kilroypr]

I am not sure about the technician. Because for mileage i do know the TCC will lock on high gear. But is supposed to dissengage rather quickly when pressing the pedal to pass other car. Is not supposed to stick on higher gear when pressing the pedal further.
You do not have to shfit manually to make the tranny dissengage and go to a lower gear, just pressing the pedal a bit harder should do it.
The problem that I had on the Z-34 was more like the tranny not deciding to stay on 3rd or 4th and would jerk rather quickly between both gears until I floored the pedal and the tranny will stay in the lower gear.
Never the less what the technician tells makes some sense what does not make sense is that the tcc will engage too much as to stay like that when pressing the pedal further enough to make the tranny normally shift to a lower gear. I would check the TCC and add an additive that would enhance the clutches performance, what is the car mileage again?

[alexschmitty974]

anybody find out what the actual problem was with this? my pontiac grand am is doing the exact same thing.

[LMP]

Originally Posted by alexschmitty974

anybody find out what the actual problem was with this? my pontiac grand am is doing the exact same thing.

WOW....long gone thread....but anyway...What year, what engine. COme back with details....
I had two incidents of that type...one related to failed TPS, another due to dirty MAF..the little wire that senses air flow covered with a thin layer of mud/dirt.
but 3.1 do not all have MAF...but have MAP....so it depends....

[alexschmitty974]

it is a 2000 pontiac grand am with a 3.4l v6 it has about 167xxx miles on it and I've replaced the mass air flow sensor and the tps already. and yeah the thread is ridiculously old but it matches it pretty well

[Tech II]

yeah the thread is ridiculously old but it matches it pretty well


I can't understand what the original thread says...sounds like something my SM would write....

IN YOUR OWN WORDS, describe what is happening....also has the car been scanned for engine/tranny codes....does your tranny have a dipstick?

[rkvons]

I've read the original thread and can't really understand it either. It sounds like the person describing it does not know what a locking torque converter does and how it makes the car behave. But if you read it with the idea that he's describing the locking torque converter operation, it makes sense.