Just had my E4OD Trans rebuilt and it's shifting too early into OD and lugging

[nicksorenson]

I just had my E4OD rebuilt. A local guy rebuilt it. He said he's done but that it's shifting too early into 4th and lugging. He said the transmission is mechanically all set and that this is electronic. Where do I look?

[CT Performance, Inc.]

If it shifter fine before the rebuild its the trans.

[SuperDuty73]

Well i'd be happy you have overdrive/ 4th gear. Mine doesnt stay in it at all unless im on it. I have no clue why but im going to find out soon I hope. crusing rpms are way up there. If you get this fixed please tell me becuase my problem is probably realated.
My truck was fine before my shift kit. I have already replaced the shift solenoid pack and now looking into the accumulator valve body.
Mark

[Robsr]

Originally Posted by SuperDuty73

Well i'd be happy you have overdrive/ 4th gear. Mine doesnt stay in it at all unless im on it. I have no clue why but im going to find out soon I hope. crusing rpms are way up there. If you get this fixed please tell me becuase my problem is probably realated.
My truck was fine before my shift kit. I have already replaced the shift solenoid pack and now looking into the accumulator valve body.
Mark

Hmm, I would say since you've replaced the sol pack, we can eliminate S2 as the problem. I would inspect the 3-4 shift valve, and the OD accum. reg. valve. Make sure the valves are not sticking in the bore, and the springs ain't tangled or broken. Check the seperator gasket and bolts/valve body to case as well. Hope this helps