no lockup e40d
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Freshman User
Joined: Mar 2006
Posts: 35
Likes: 0
no lockup e40d
my 91 7.3 idi with a recently rebuilt tranny (professionally rebuilt) just stopped locking the torque converter. Does anyone know how to test the lockup electrical system??? Any help is appreciated.
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 15
From: Nutter Fort, WV
l'il ol diesel,
Welcome to the IDI diesel forum.
I am not much on automatic trannies, but someone with one will be along shortly.
About all I can say is touching the brakes unlocks the torque converter, so are the brake lights on?
Welcome to the IDI diesel forum.
I am not much on automatic trannies, but someone with one will be along shortly.
About all I can say is touching the brakes unlocks the torque converter, so are the brake lights on?
Elder User
Joined: Aug 2007
Posts: 728
Likes: 0
the fipl is the most common problem , your test passed it because your meter didnt have a high enough sampling rate
we have had for years what is called a noisy fipl issue
thats when at a cruise condition the vibration etc causes a worn spot in the potentiometer to emit a wide voltage pattern and there is also a code for a noisy fipl
we have had for years what is called a noisy fipl issue
thats when at a cruise condition the vibration etc causes a worn spot in the potentiometer to emit a wide voltage pattern and there is also a code for a noisy fipl
Post Fiend
Joined: Nov 2004
Posts: 5,638
Likes: 1
From: Manitoba
I quote from my documentation:
DIESEL FIPL SENSOR INFO
DATE 1992
REASON
Early Black FIPL has High Failure Rate
RECOMMENDATION
Always replace the black colored early FIPL or any colored FIPL having 60 thousand or more miles with the late gray colored FIPL.
PART NUMBER
F2TZ-9B989-C
DIESEL FIPL SENSOR INFO
DATE 1992
REASON
Early Black FIPL has High Failure Rate
RECOMMENDATION
Always replace the black colored early FIPL or any colored FIPL having 60 thousand or more miles with the late gray colored FIPL.
PART NUMBER
F2TZ-9B989-C
