Does the shudder come as soon as you mash the pedal or when the tranny
downshifts (if there's any delay)? Does it shudder at WOT without the
downshift? How many miles on the tranny?
On Sep 24, 2014 9:41 PM, "John Rodgers" <jrodgers113@gmail.com> wrote:

> I have a 1991 Carat with auto tranny. On floorboarding to go up a hill or
> kick down into a lower gear to pass, the  engine seems to drop a cylinder
> an shudder as if not firing. I have a Shoebox Electronic ECU Monitor hooked
> up and have the engine fine tuned and all the numbers are good and the
> lights are correct, yet I get this shudder anyway. I checked with an
> induction timing light the firing of  each ignition wire up 2500 rpm. Each
> was good. Yet it still shudders on pressing the pedal to the metal.
>
> Any ideas?
>
> John the Gimp
>