Truck doesn't want to shift from 1st to 2nd

[BLOWN454]

So I just got an email back from Westers and all they said was make sure the MAF sensor is spotless?

 

[Stumpuller6.5]

So I just got an email back from Westers and all they said was make sure the MAF sensor is spotless?

I think they are on crack, call them and demand to talk to Justin, or is it Jason, shit if forget....

 

[BLOWN454]

So I just got an email back from Westers and all they said was make sure the MAF sensor is spotless?

I think they are on crack, call them and demand to talk to Justin, or is it Jason, shit if forget....

Yeah I don't know who answers. They seem very vague every time I email them though. I have a rough/lean idle issue also now once in awhile and I told them about the shifting and the idle and they said make sure the MAF is clean, then I emailed them back and asked if the MAF could be responsible for the shifting AND the idle and the only thing they said back was remove the MAF and spray it down with cleaner. Who knows. Going to stop by NAPA after class and pick up a can of cleaner and try it out.

 

[hotrodpc]

So I just got an email back from Westers and all they said was make sure the MAF sensor is spotless?

I think they are on crack, call them and demand to talk to Justin, or is it Jason, shit if forget....

Yeah I don't know who answers. They seem very vague every time I email them though. I have a rough/lean idle issue also now once in awhile and I told them about the shifting and the idle and they said make sure the MAF is clean, then I emailed them back and asked if the MAF could be responsible for the shifting AND the idle and the only thing they said back was remove the MAF and spray it down with cleaner. Who knows. Going to stop by NAPA after class and pick up a can of cleaner and try it out.

The MAF sensor should not have a thing to do with the transmission. Trans will read sensors like crank position for RPM, TPS for throttle position if you are on it, or just cruising and things of that nature only to decide shift points. The ECM for a transmission only takes place of things like vac modulator, TV cable, governor etc. Once the ECM gets the proper info from the proper sensors, it then tells Solenoid A and B what to do which shifts the transmission, and tell the converter when to lock up and when to unlock. That's pretty much about it.

I hope Redneck wasn't thinking I was disagreeing with him totally but in a way I was/am. Trans is not defective YET and just an overhaul isn't going to fix your problem. But, he makes a very valid point and I will agree with the fact you could sure use a trans rebuild. I say that because you need some mods done to this transmisison for it to perform properly with the new added power and tune. Just that while you are there doing these mods, may as well put in the clutches and seals too. IF you want to save $25 or so, your steels are probably still good. I'd for certain get a stonger TC, maybe even add a little stall if you need it. Sounds like the tune may have just delayed the shift, which is really not needed on a Big Block since Blig Blocks don't like RPM. But true, to get some umph behind these shifts, line pressure is going to need to be increased to clamp the clutch packs tighter, and close faster. Also keep in mind, there may need to be some mods done for clutch packs to release quicker too. Having 2 gears engaged at the same time, is killer on a trans. This can happen when a clutch pack compresses faster than the one that needs to release has fully released. IF it were 4L60-e, I could tell you without looking, but if you want an idea of some mods, I can check into some. The 4L80-e is a Turbo 400 with Overdrive pretty much as far as the hard parts go. Not much needed done to a T400 for performance, but with electronics total differant story. Actually non electronics in some models too for that matter, like the 700r4.