gushaman
Diesel Novice
Ok heres the facts:
when truck is nice and cold, i.e. hasnt been driven in a good few hours, it shifts just perfect. A mile or so after the torque converter starts being able to lock up, it starts shaking HARD whenever it locks it up. I installed and adjusted a new FIPL, and I have it set a little high, so it goes into 3rd about 35mph, and 4th about 43mph or so, instead of 30mph and 40mph, respectively.
Once the shaking begins (it usually starts in 4th, then moves to third as well) I can push my o/d off button and it down shifts from 4th to 3rd and almost immediately locks the converter. it shakes less in 3rd than in 4th.
If I touch the brake pedal it unlocks and all shaking stops. sometimes I ride the brake just to kepp it gaining in revs before I let the TC lock up again.
If I can finagle it to not shake much and get it up above 55mph (highway) then the shaking diminishes greatly and I can turn the o/d back on about 55mph and it up****s, and locks immedatley but not much shaking at all......
I have changed fluid and filter. P.O. said previous p.o. had trans rebuilt, and it looks nice and clean. After I changed filter/fluid I put 2 tubes of shudder fix in, then a week later (since no change) I put a bottle of lucas trans goo in, still no change.
furthermore, if I cut the purple/yellow wire going from comp to trans, it still has the same behavior, shaking whenever trying to lock-up, which If I understand correctly shouldnt be happening at all.....
Solenoid connector has been cleaned, found grease, mud, and bits of old o-ring in it, but trans fluid doesnt leak past the pins.
1991 f-250 7.3 idi non turbo 4wd manual hubs e4od
I hope thats enough info for someone that knows about these things?
when truck is nice and cold, i.e. hasnt been driven in a good few hours, it shifts just perfect. A mile or so after the torque converter starts being able to lock up, it starts shaking HARD whenever it locks it up. I installed and adjusted a new FIPL, and I have it set a little high, so it goes into 3rd about 35mph, and 4th about 43mph or so, instead of 30mph and 40mph, respectively.
Once the shaking begins (it usually starts in 4th, then moves to third as well) I can push my o/d off button and it down shifts from 4th to 3rd and almost immediately locks the converter. it shakes less in 3rd than in 4th.
If I touch the brake pedal it unlocks and all shaking stops. sometimes I ride the brake just to kepp it gaining in revs before I let the TC lock up again.
If I can finagle it to not shake much and get it up above 55mph (highway) then the shaking diminishes greatly and I can turn the o/d back on about 55mph and it up****s, and locks immedatley but not much shaking at all......
I have changed fluid and filter. P.O. said previous p.o. had trans rebuilt, and it looks nice and clean. After I changed filter/fluid I put 2 tubes of shudder fix in, then a week later (since no change) I put a bottle of lucas trans goo in, still no change.
furthermore, if I cut the purple/yellow wire going from comp to trans, it still has the same behavior, shaking whenever trying to lock-up, which If I understand correctly shouldnt be happening at all.....
Solenoid connector has been cleaned, found grease, mud, and bits of old o-ring in it, but trans fluid doesnt leak past the pins.
1991 f-250 7.3 idi non turbo 4wd manual hubs e4od
I hope thats enough info for someone that knows about these things?