HEY I GOT A 1999 MAX GXE AUTO.
I DON'T KNOW IF THE TRANNY IS SLIPPPING BUT I SEE THE RPM'S MOVING INSTANTLY FROM 2 TO 1 VERY FAST, RIGHT WHEN I LET GO OF GAS PEDAL. IS THERE A EQUATION OF RPM-MPH WHEN THE TRANNY SHOULD SHIFT,
EX. AT 60 MPH MY RPM IS 2.

 

Mph = rpm x tire diameter/Gear ratio x 336


Rpm = mph x gear ratio x 336/Tire diameter



And your car is shifting, that's why it goes from 2k-1k like that.

 

y would his car shift up when he lets off the gas?

 

Because it's automatic, and that's what it is designed to do.

When wot, the car will go higher rpm because more power is demanded, when cruising along, the engine electronic control is designed to be fuel effecient, hence keeping rpm's at a minimal.

 

What Is Normal Rpm For Every Speed?

 

I don't know exactly what you mean, nor why you want to use this information, but if you use the formulas, you should be alright.

 

I have the same problem , but i dont really think it is a problem...

 

I also have the same behavior, that's why I say there's no problem.

 

There is nothing wrong,,trans is free wheeling when you let off the gas

 

Yea your tranny upshifting, helps you glide forward instead of slowing down quickly(engine brakeing). No prob at all...

 

Your tranny is not slipping, if it was it would feel as if you have no tq at all and you can actually feel the TCC Slipping, (I think its called the TCC Correct me if Im wrong) My tranny is slipping, I dont think yours is from what you described, its just doind what its supposed to do, hense that name of auto trannys, little dumb machine