94 E150 automatic shift delay

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Aug 31, 2021 | 03:45 PM

Ebinflow

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4wd Low

Joined: Aug 2021

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94 E150 automatic shift delay

I have a 94 e150 with a 5.0 not sure what transmission. IT won’t shift until it hits 35mph and the motor is high rpms SOMETIMES letting of gas will help it shift for a second but if it’s under 35 mph it jumps right back down. I also notice it does this but not as bad in the last gear.
I have a feeling it’s my gauge cluster shorting, because my air bag light, abs light, and check engine light come in randomly.

but the note about the speed dependancy makes me wonder if it’s something else.

also the OD light comes on but I could feel a difference in driving and no flashing or light but I didn’t leave it on long.

odometer and speed read fine

(update: also if I shift manually it does fine going into 2nd)

Last edited by Ebinflow; Sep 1, 2021 at 03:10 PM.

Aug 31, 2021 | 08:20 PM

Mark Kovalsky

Frmr Ford Trans Engr

Joined: Aug 1999

Posts: 24,730

Likes: 2,658

From: SE Florida

The first thing to do is to read the codes. Here is a way to do that: Trouble Codes

Sep 1, 2021 | 02:08 PM

Ebinflow

Thread Starter

4wd Low

Joined: Aug 2021

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Quote:

Originally Posted by Mark Kovalsky

The first thing to do is to read the codes. Here is a way to do that: Trouble Codes

i cannot seem to find the obd1 location

Sep 1, 2021 | 05:33 PM

Mark Kovalsky

Frmr Ford Trans Engr

Joined: Aug 1999

Posts: 24,730

Likes: 2,658

From: SE Florida

It's been a couple decades since I worked on one of those. If I remember correctly it is under the hood on the passenger's side, towards the back.

Sep 1, 2021 | 08:27 PM

NICKSAN

Laughing Gas

Joined: Oct 2014

Posts: 793

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On my 94, 5.8 the obd1 connector is on the drivers side between the battery and wheel well, one large one and small one. May or may not be the same on your 5.0.
The airbag and abs lights coming on randomly "may" also be a failing clockspring wire.

Sep 2, 2021 | 10:39 AM

Ebinflow

Thread Starter

4wd Low

Joined: Aug 2021

Posts: 11

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Quote:

Originally Posted by Mark Kovalsky

The first thing to do is to read the codes. Here is a way to do that: Trouble Codes

got the codes

key on engine off

121- Clossed throttle voltage higher or lower than expected.
124- TP voltage was higher than expected - Fuel control

key on engine running
998- hard fault present
22- bp sensor out of range

do y’all think it’s safe to assume it’s my TPS sensor???!! That’d be awesome

or maybe map sensor (bp), although I did just u plug and replay this in while it was off, idk if that will throw a code ?

Another question… if I replace the tps do I have to remove the throttle body?

Last edited by Ebinflow; Sep 2, 2021 at 11:41 AM.

Sep 3, 2021 | 01:29 PM

Ebinflow

Thread Starter

4wd Low

Joined: Aug 2021

Posts: 11

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FIXED!!!!

I replaced the tps sensor and..:…. She runs like a dream. Thank y’all!

the awesome part is I bought this van super cheap a week ago cause it seemingly had transmission problems. They replaced everything trying to get it to run better to cap rotor wires, new fuel system including injectors! I’m so pumped