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95 E40d possible mlps issue

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Old Feb 2, 2020 | 11:14 AM
  #1  
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95 E40d possible mlps issue

So I’m having the classic symptoms of a bad mlps.... slipping, hesitant upshifts, tc lockup at odd times, etc. This condition started overnight, after a drive home in some wintry conditions. Replaced the mlps, still nothing. The trans shifts through all gears, reverse, and will even cruise 70 mph with full tc lockup. Symptoms seem to come and go, and trans fluid is clean although higher than I remember after doing a service maybe 5k miles ago.

The problem seems electrical with it being as sporadic as it is. Where can I go from here?
 
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Old Feb 2, 2020 | 12:11 PM
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Originally Posted by JimiLL
So I’m having the classic symptoms of a bad mlps.... slipping, hesitant upshifts, tc lockup at odd times, etc. This condition started overnight, after a drive home in some wintry conditions. Replaced the mlps, still nothing. The trans shifts through all gears, reverse, and will even cruise 70 mph with full tc lockup. Symptoms seem to come and go, and trans fluid is clean although higher than I remember after doing a service maybe 5k miles ago.

The problem seems electrical with it being as sporadic as it is. Where can I go from here?
Do all your lights work? I had the same issues and it was my top brake light was burned out!!
 
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Old Feb 2, 2020 | 01:45 PM
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Originally Posted by westcoasting
Do all your lights work? I had the same issues and it was my top brake light was burned out!!
you know what, that sob doesn’t work. The white bed lights work, but not the actual brake light.

how does that relate to the trans?
 
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Old Feb 2, 2020 | 03:25 PM
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in ford engineers wise-less-ness, they tied 3rd brake light with E4OD and its shifts, thats another reason people have issues when putting LED's in, then have E4OD trans shift issues
 
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Old Feb 2, 2020 | 10:26 PM
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Originally Posted by JimiLL
you know what, that sob doesn’t work. The white bed lights work, but not the actual brake light.

how does that relate to the trans?
Lmao i know its the craziest thing ever!! If that non functioning light doesn't fix the problem right now it will fix the problem that will surface very soon if you didn't!!
 
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Old Feb 4, 2020 | 01:17 PM
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Originally Posted by westcoasting
Lmao i know its the craziest thing ever!! If that non functioning light doesn't fix the problem right now it will fix the problem that will surface very soon if you didn't!!

ok unfortunately bulb did not fix anything.
 
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Old Feb 4, 2020 | 01:33 PM
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Originally Posted by JimiLL
ok unfortunately bulb did not fix anything.
So does the light now work when you step on the brakes?
 
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Old Feb 4, 2020 | 01:38 PM
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Here is a possible solution to consider. You should run diagnostic codes to see if any of these apply to you. Sandy
https://www.ford-trucks.com/forums/1...s-harness.html
 
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