does Gryphon allow for tranny to keep learning?

[Longshot270]

Originally Posted by JackandJanet

There IS a reason for drive by wire - it's easier to correct a problem (or a perceived problem) with a software adjustment than it is to fiddle with "hardware", which may include replacing actual parts with a corresponding cost in labor. But the downside is that the software engineer's idea of an ideal setup may not match yours.

And, looking at all the trouble Toyota is having with their throttle problem (which now possibly MAY include electronic control problems as well as mechanical ones) does not bode well for the rest of the industry that has also adopted electronic throttle control. Consider: All we have to have is an accelerator Pedal Position Sensor (PPS) that has somehow electronically failed into the WOT position, and the PCM will command the Throttle Position Actuator into the full open position. This COULD, of course be countered by a Brake Sensor that, if activated, tells the PCM to ignore the PPS and close the throttle, regardless of the pedal position.

Since the PCM DOES monitor the brakes, I think, on an ABS equipped vehicle, this seems a change that could easily be accomplished with a PCM flash (software fix).

Probably, it would have been better all along to simply follow the KISS principle.

- Jack

Funny you bring up the issue of the PPS sensor going out while driving. In Australia a while back I heard of a case where that happened to someone. He had his car on cruise control at 60 or so when something messed up. He drove against his will while the cops tried to figure something out. Luckily someone had the wonderful idea of using the the parking brake to get the vehicle slow enough to stop safely.

I dont really like the electronic stuff either. A friend of mine with an older powerstroke had that sensor go out on him. Caused quite a bit of trouble for him.