E40D TRANSMISSION TROUBLE!!!
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New User
Joined: Dec 2009
Posts: 12
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From: Utah (HATU)
E40D TRANSMISSION TROUBLE!!!
I have a 1996 F-150, it will shift very harh and my overdrive light starts flashing once it slams into gear. at times i can be driving down the road and my rpms reach 5000 before shifting into second, i also can have my foot on the gas pedal steady and it will all of a sudden act like its in neutral and then it slams into second. my overdrive light starts flashing and engine light came on. i have taken it in for the check engine light and it was a speed sensor i replaced that and the fluid and the problem is still their. I am in school for Automotve but just havent taken the automatics class yet. Someone help!!!
Lead Driver
Joined: Aug 2006
Posts: 5,670
Likes: 13
From: Sand Lake, MI
MLPS - Manual Lever Position Sensor, side of trans or
PSOM - Programmable Speedometer/Odometer Module, behind speedo.
Best guess based on symptoms? the latter of the two, however the MLPS does give very similar symptoms.
PSOM - Programmable Speedometer/Odometer Module, behind speedo.
Best guess based on symptoms? the latter of the two, however the MLPS does give very similar symptoms.
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New User
Joined: Dec 2009
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From: Utah (HATU)
So when i was on my way down town to get a mlps and electricsl parts cleaner mu od light and check engine light also went out and truck is back to shifting normal, would i have a short somewhere or pcm, ecm going out?? any ideas??
Fleet Owner
Joined: Jan 2008
Posts: 26,898
Likes: 3
From: southern md
if it's like mine the PSOM should show a VSS code
would do great when cold as soon as it got warmed up -as in after about 30 minutes blam erratic shifts slam into gears e.t.c
I just checked everything else and swapped out the cluster
been through 2 so far-last one has been good for about 3 years
would do great when cold as soon as it got warmed up -as in after about 30 minutes blam erratic shifts slam into gears e.t.c
I just checked everything else and swapped out the cluster
been through 2 so far-last one has been good for about 3 years
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Mountain Pass
Joined: Sep 2009
Posts: 151
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From: Roseville, MI.
Does anyone's Speedometer act up when this is happening? I have had a intermittant shifting problem with my truck, but the speedometer would also act up with it, or sometimes by itself. What would happen is the odometer would cut out and the speedometer would freeze at the last recorded speed.
Almost by accident, ( or a fit of rage) I discovered that that a very persuassive fist pounding to the dashboard would make the speedo and odo pop back on. HMM...
I haven't had an issue since last summer, after a TPS was replaced, but I doubt it was the "fix" also seeing as how my speedo went out yesterday, but My swift fist persuaded it to reconsider itself
Let me know what Ya think, and if it helps someone else or they can help me, thanks
Almost by accident, ( or a fit of rage) I discovered that that a very persuassive fist pounding to the dashboard would make the speedo and odo pop back on. HMM...
I haven't had an issue since last summer, after a TPS was replaced, but I doubt it was the "fix" also seeing as how my speedo went out yesterday, but My swift fist persuaded it to reconsider itself
Let me know what Ya think, and if it helps someone else or they can help me, thanks
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New User
Joined: Dec 2009
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From: Utah (HATU)
my speedo had similar symptoms when my truck started having shifting problem but my check engine light came on i got it scanned and it was the ABS speed sensor on rear diff i replaced it speedo works great but still having shifting problems gonna get it scanned tomarrow. I never have had a problem with the odometer tho.
Mountain Pass
Joined: Sep 2009
Posts: 151
Likes: 0
From: Roseville, MI.
my speedo had similar symptoms when my truck started having shifting problem but my check engine light came on i got it scanned and it was the ABS speed sensor on rear diff i replaced it speedo works great but still having shifting problems gonna get it scanned tomarrow. I never have had a problem with the odometer tho.
So did you ever find the problem getting it scanned? Curious to know what is was.
Fleet Owner
Joined: Aug 2005
Posts: 23,667
Likes: 301
From: Easton,Ks
Does anyone's Speedometer act up when this is happening? I have had a intermittant shifting problem with my truck, but the speedometer would also act up with it, or sometimes by itself. What would happen is the odometer would cut out and the speedometer would freeze at the last recorded speed.
Almost by accident, ( or a fit of rage) I discovered that that a very persuassive fist pounding to the dashboard would make the speedo and odo pop back on. HMM...
I haven't had an issue since last summer, after a TPS was replaced, but I doubt it was the "fix" also seeing as how my speedo went out yesterday, but My swift fist persuaded it to reconsider itself
Let me know what Ya think, and if it helps someone else or they can help me, thanks
Almost by accident, ( or a fit of rage) I discovered that that a very persuassive fist pounding to the dashboard would make the speedo and odo pop back on. HMM...
I haven't had an issue since last summer, after a TPS was replaced, but I doubt it was the "fix" also seeing as how my speedo went out yesterday, but My swift fist persuaded it to reconsider itself
Let me know what Ya think, and if it helps someone else or they can help me, thanks
Mountain Pass
Joined: Sep 2009
Posts: 151
Likes: 0
From: Roseville, MI.
Oh really? hmm... I've never been behind the cluster on this, I don't know what it would look like for starters. The speedo has bulbs burnt out anyway already, from 30mph to 65mph, ya kinda have to guess at night, lol.
whats one of those psom's cost if needed? are they junk yard only or can they still be bought new? I've seen a lot of talk about 'em but no talk of cost.
My truck's really weird, seems like only acts up around winters.
Elder User
Joined: Feb 2007
Posts: 601
Likes: 1
From: Chicagoland
Oh really? hmm... I've never been behind the cluster on this, I don't know what it would look like for starters. The speedo has bulbs burnt out anyway already, from 30mph to 65mph, ya kinda have to guess at night, lol.
whats one of those psom's cost if needed? are they junk yard only or can they still be bought new? I've seen a lot of talk about 'em but no talk of cost.
My truck's really weird, seems like only acts up around winters.
whats one of those psom's cost if needed? are they junk yard only or can they still be bought new? I've seen a lot of talk about 'em but no talk of cost.
My truck's really weird, seems like only acts up around winters.
Fleet Owner
Joined: Aug 2005
Posts: 23,667
Likes: 301
From: Easton,Ks
If you can get one from a 1995-96 it is best as they had an improvement in them around 1994 but they will work from 1992-1996+ from a Bronco, E-series, F-series and maybe others.
Note that you will get the odometer reading to start with that the truck had you got it out of.
The PSOM:
/
Note that you will get the odometer reading to start with that the truck had you got it out of.
The PSOM:
/
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New User
Joined: Dec 2009
Posts: 12
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From: Utah (HATU)
Ha, we diagnosed it at school and we have clutch pack slippage 1 and 2 torque converter malfunction and low pressure. the transmission finally went south on me 2 weeks ago,on freeway headed to my parents house and it started slipping did that about 5 times and finally came too a stop no forward gears and no reverse. got it home tore trans out and tore into it and about half of my friction discks were fried. and burn marks all over my steel discks. got pics if you wanna see them!! iam gonna rebuild my transmission in school, so its all good in the mean time i am gonna get a used oneat a junkyard. should be back on the road next weekend.