Replace Trans or easy fix?

[Azbowhunter62]

Hello,

+
I am new here and am happy that this is here.
I have a 2000 7.3 Diesel F350 that I bought 3 years ago. Ever since the day I bought it it has done some strange things that no Mech seems to think is a problem.
1st when I drive the tranny deems to work fine but until I hit the brake pedal. When under 45 mph the truck stays engaged in gear but the idol seems to drop to 900 rpm or coasts as if in neutral. I step on it and it engages again. That is something I have never seen before and want to know if this is a common behavior of the Ford trucks. If not what could it be?
2nd When the truck is cold or even when it is below 80 degrees outside the Tranny runs strong. When temps get above 80 deg when I come to a stop in the truck it will seem to slip into neutral and I have to baby the fuel pedal to get it to move because it seems to want to stay in neutral. when running or it engages it runs strong. No slipping at all. Is this and easy fix or is it a complete rebuild?

By the way I have changed filters and fluid.

[HillClimber350]

Originally Posted by Azbowhunter62

Hello,

+
I am new here and am happy that this is here.
I have a 2000 7.3 Diesel F350 that I bought 3 years ago. Ever since the day I bought it it has done some strange things that no Mech seems to think is a problem.
1st when I drive the tranny deems to work fine but until I hit the brake pedal. When under 45 mph the truck stays engaged in gear but the idol seems to drop to 900 rpm or coasts as if in neutral. I step on it and it engages again. That is something I have never seen before and want to know if this is a common behavior of the Ford trucks. If not what could it be?
2nd When the truck is cold or even when it is below 80 degrees outside the Tranny runs strong. When temps get above 80 deg when I come to a stop in the truck it will seem to slip into neutral and I have to baby the fuel pedal to get it to move because it seems to want to stay in neutral. when running or it engages it runs strong. No slipping at all. Is this and easy fix or is it a complete rebuild?

By the way I have changed filters and fluid.

1st issue sounds like snap ring on coast clutch may be off so it just free wheels and doesnt engauge coast clutch,

Is the truck chipped or anything? May need a new solenoid pack for the second issue all the elctronic feedback for the tranny for temp and stuff comes from the solenouid pack and sounds like your pcm doesnt know how to control the tranny after temps come up. That is just a guess on my part but seems logical based on what your saying. and a fairly inexpensive thing to try

[RedneckGirl]

Doesn't sound like a rebuild thing to me, however, since the tranny wasn't engineered to run in this fashion, it may wear more quickly. Something is off for sure. I am far from a tranny expert and had to replace one at 99,900 miles in my Ex...that hurt. Best of luck!