hypertech III cause trans probs
#1
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so this seems strange
my trans 4 spd auto, shifts pretty badly, and late. sometimes it seems to want to stick in a gear.
let off the gas and it shifts, in an old truck it would be the vacuum modulator, I doubt a 99 has one??
for instance at mild acceleration (around town) it will be at 3000-3500 rpm before it will shift at 30 mph
when I installed the hypertech programer III 87octane program, it got so bad it would hit the rev limiter in third gear and still not shift. and if I let off the gas it would just act like the truck hit a wall, then it would shift after it slowed down a lot, then when I stepped on the gas it would accell a bit, then slip back into 3rd and rev all the way up again.
GRRRR
why the #$%% do trucks need computers anyways, it was so much easier to work on things that only had mechanical parts!
help help help [sm=pcwhack.gif]
my trans 4 spd auto, shifts pretty badly, and late. sometimes it seems to want to stick in a gear.
let off the gas and it shifts, in an old truck it would be the vacuum modulator, I doubt a 99 has one??
for instance at mild acceleration (around town) it will be at 3000-3500 rpm before it will shift at 30 mph
when I installed the hypertech programer III 87octane program, it got so bad it would hit the rev limiter in third gear and still not shift. and if I let off the gas it would just act like the truck hit a wall, then it would shift after it slowed down a lot, then when I stepped on the gas it would accell a bit, then slip back into 3rd and rev all the way up again.
GRRRR
why the #$%% do trucks need computers anyways, it was so much easier to work on things that only had mechanical parts!
help help help [sm=pcwhack.gif]
#3
#4
#5
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yeah, i know the shift points are cable adjusted.
i am thinking maybe it is only seriously loosing it with the Hypertech because of the extra power.
I am almost certain the tranny is shot, but just do not understand why?
and it is not throwing a single code at all!!!!!!!!!
i am thinking maybe it is only seriously loosing it with the Hypertech because of the extra power.
I am almost certain the tranny is shot, but just do not understand why?
and it is not throwing a single code at all!!!!!!!!!
#6
#7
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#8
#9
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I can't see a programmer causing the trans problems. When my trans puked it didn't set a code at all. what year is your truck? Chrysler has some software updates for delayed up shift for the newer trucks and also addresses some durability issues. By the sound of what your descibing I'd say that your about to joint the rebuild club.
#10