Throttle sensitive update.

[T.Hanson]

In case anyone is interested. After checking all details, odd possible things, my common sense had to go back to visualizing a snappy, pedal sensitive throttle to just that. Something happening fast, right in the area of the big butterfly throttle plate. Right or wrong, if I know the throttle body is clean and set right, that leaves the AFM, with its doors, innards.

Five to choose from. Three on cars, two on the shelf. Two have been on the car. All have identical part numbers on the Bosch plastic cover, from '79 to'80,'81. To be sure both weren't doing the same bad thing I installed the third.

Seems way better. Still snappy, but now less pedal sensitive. I suspect a step towards solution is AFM tuning, and I have no idea why two others do what they do. Not malfunctioning, just pedal sensitive.

Having two 528's is great, and strange. Very interesting to discover how different two identical cars feel.

[marc79euro645]

trying to tune the old afm gave me the courage to megasquirt, I remember the joy of tossing that afm away
trace tracks can altered to new radius by bending arms carefully with needle nose pliers
good luck
marc

[socalfiver]

I wish mine were a little more sensitive than it is, but I've got a slushbox tranny. And a 6th cylinder that loves to not fire.