'86 hesitation

Maybe someone can help me with this. While highway driving and hitting it to pass/accelerate "sometimes" I get a hesitation and a grinding noise like the gears are not grabbing. I
let go of the gas , accelerate again and it clears up. This only happens at speeds over 40-50 MPH. I have an automatic '86 which otherwise changes gears fine. I'd appreciate any help in this regard. Joe
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i noticed a hesitation on moderate take off in the 86 as opposed to the 84 smoothness. i also noticed a 'burblying' if you will at moderate speeds when feathering the gas. also, i was getting an intermittent err code 42 and 44. also getting the 2 back plugs fouling. ran the usual chks and found nothing.
then i started putting in a container of injector jet cleaner with Every tank full and the problems have 95+% gone away. still evaluating.
ssome

at
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i'm told that this is not the best xmission. and that they can be upgraded.
ssome

at
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Thanks for the tips. As far as the tranny I changed the fluids about 2 years ago for the hell of it and it ran fine . I would rather not have to upgrade the tranny but "me fears it is in my future" : ) . Joe

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joevett wrote:

I had an '85 that had transmission problems. I changed the fluids and filter once a year, and that kept it running well for a long time.
--
Jim

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http://www.corvettefever.com/howto/4686/index.html
from a msg above

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happens
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