E4OD Rebuild Issue

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Jul 3, 2003 | 09:00 PM

oregon250

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Joined: Jan 2002

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From: USA

E4OD Rebuild Issue

I just recently had my '93 F250 4X4 460 E4OD transmission rebuilt. All soft parts updated pump, selenoid pack etc. HD Torque converter the works and $2800.

Well the shop was having a problem with a harsh 2-3 upshift and a somewhat harsh OD upshift. The said they narrowed it down to my PCM.

I decided to test my TPS and I really can't see how to adjust it. At idle I got .85 and at WOT I got 4.75. I tried to adjust it to 1.0 at idle at 4.5 WOT, but I always get a reading of 4.75 at WOT and harsh shifts still persist.

Was the shop right and I need a new PCM. HELP PLEASE I don't want to blow another transmission.

Thanks,

Jul 3, 2003 | 10:41 PM

pfogle

Lead Driver

Joined: Feb 2003

Posts: 8,140

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From: Oak Harbor, OH

E4OD Rebuild Issue

I would replace the TPS first. Why spend 100+ bucks now when it could just be the $35 TPS..

Jul 4, 2003 | 12:44 AM

lexluthr69

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Joined: Jan 2003

Posts: 383

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From: Newport News USA

E4OD Rebuild Issue

Those numbers sound about right for a TPS. The ideal idle numbers are as close to 1.0 volt as possible. and WOT should be fairly close to 5 volts. My TPS also sits at or about .85 volts.
I'm not familiar with the E4OD so I've not got much for advice there.

Jul 4, 2003 | 12:52 AM

Torque1st

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Joined: Sep 2001

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E4OD Rebuild Issue

Actually moving from .85V to 1.0V would make shifts more harsh. Higher voltage = harder shift. It may be the HD torque converter.

Jul 4, 2003 | 03:07 AM

oregon250

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From: USA

E4OD Rebuild Issue

It's not the torque converter. The shop hooked it up to a new computer and it shifted like a dream. The harsh up shift is almost like being rear ended.

Jul 5, 2003 | 06:42 PM

oregon250

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From: USA

E4OD Rebuild Issue

Ok new TPS new (used) computer and the problem still persists. Put a volt meter on the TPS and the ground showd .04 so I went ahead and put a new ground in now it's at .01.

TPS ground. .01 center wire is .96-4.66 and the third wire is 5.04.

I don't know what to do now the problem is still there. Shifts awesome 1-2 then 2-3 feels like you get rear ended 3-od feels fine.

HELP I need this truck and I can't put much more money into it I am already out 2800 for the month.