E4OD help
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E4OD help
So my speedo is stuck on 0 and the truck shifts really hard I replaced the VSS on the rear end so is it the MLPS really need some help cause I'm at a loss on what else it could be thanks its a 1994 ford f150 with the 5.0
Frmr Ford Trans Engr
Joined: Aug 1999
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From: SE Florida
The MLPS has nothing to do with the speedo. You'd have more success rotating the tires than replacing the MLPS.
It could be the wiring to the VSS, or it could be the PSOM module on the back of the speedo cluster.
It could be the wiring to the VSS, or it could be the PSOM module on the back of the speedo cluster.
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From: Mi'kma'ki
Fleet Owner
Joined: Jul 2006
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From: Mi'kma'ki
you already stated you replaced it.there is only one vss.for your year truck,it's in the rear axle.
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From: Mi'kma'ki
the trans is blind to the vehicles speed.it hasn't got a clue which gear to provide without this vital information.so without a working speedometer,the trans can't function correctly.
like Mark pointed out,it could be the wiring the the vss or the PSOM.however before doing too much (since it just sits on 0 mph doing nothing) be sure to check the fuses.for example if the dome light fuse blows the speedo doesn't work.look through your owners manual and you'll see a couple speedo fuses to inspect firstly.iirc the one on with the dome light is for memory and it kinda works when blown but then there is another just for it.you'll see.if the interior dome light works,find the main one and inspect that.
edit,yeah ok so iv got a manual right here.
fuse 8 speedo mem (on with dome light.so if light works,this fuse is ok.)
fuse 18 speedo (also on with electric shift for t-case which only f150's like yours have if you have a 4wd.optional anyway.so if you have push button 4wd,and that's not working,odds are this fuse is blown,and would explain the dead speedo.)
like Mark pointed out,it could be the wiring the the vss or the PSOM.however before doing too much (since it just sits on 0 mph doing nothing) be sure to check the fuses.for example if the dome light fuse blows the speedo doesn't work.look through your owners manual and you'll see a couple speedo fuses to inspect firstly.iirc the one on with the dome light is for memory and it kinda works when blown but then there is another just for it.you'll see.if the interior dome light works,find the main one and inspect that.
edit,yeah ok so iv got a manual right here.
fuse 8 speedo mem (on with dome light.so if light works,this fuse is ok.)
fuse 18 speedo (also on with electric shift for t-case which only f150's like yours have if you have a 4wd.optional anyway.so if you have push button 4wd,and that's not working,odds are this fuse is blown,and would explain the dead speedo.)
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Posting Guru
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From: Canton, IL
On the trans, there is an input shaft speed sensor and an output speed sensor. If one of those was not working, you would have codes pertaining to them, weather it would cause hard shifts. i dunno..
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the trans is blind to the vehicles speed.it hasn't got a clue which gear to provide without this vital information.so without a working speedometer,the trans can't function correctly.
like Mark pointed out,it could be the wiring the the vss or the PSOM.however before doing too much (since it just sits on 0 mph doing nothing) be sure to check the fuses.for example if the dome light fuse blows the speedo doesn't work.look through your owners manual and you'll see a couple speedo fuses to inspect firstly.iirc the one on with the dome light is for memory and it kinda works when blown but then there is another just for it.you'll see.if the interior dome light works,find the main one and inspect that.
edit,yeah ok so iv got a manual right here.
fuse 8 speedo mem (on with dome light.so if light works,this fuse is ok.)
fuse 18 speedo (also on with electric shift for t-case which only f150's like yours have if you have a 4wd.optional anyway.so if you have push button 4wd,and that's not working,odds are this fuse is blown,and would explain the dead speedo.)
like Mark pointed out,it could be the wiring the the vss or the PSOM.however before doing too much (since it just sits on 0 mph doing nothing) be sure to check the fuses.for example if the dome light fuse blows the speedo doesn't work.look through your owners manual and you'll see a couple speedo fuses to inspect firstly.iirc the one on with the dome light is for memory and it kinda works when blown but then there is another just for it.you'll see.if the interior dome light works,find the main one and inspect that.
edit,yeah ok so iv got a manual right here.
fuse 8 speedo mem (on with dome light.so if light works,this fuse is ok.)
fuse 18 speedo (also on with electric shift for t-case which only f150's like yours have if you have a 4wd.optional anyway.so if you have push button 4wd,and that's not working,odds are this fuse is blown,and would explain the dead speedo.)
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From: Mi'kma'ki
incorrect information.i believe your thinking about the '99+ 4R100 that came along latter.with his '95 E4OD,the only speed sensor is located on the rear axle.
Posting Guru
Joined: Aug 2007
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From: Canton, IL
aH,, my bad. I am thinking 4r100.... NM..
Frmr Ford Trans Engr
Joined: Aug 1999
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From: SE Florida
Fleet Owner
Joined: Jul 2006
Posts: 20,375
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From: Mi'kma'ki
yeah good point Mark.i suppose what i would do in that case then,would be to pull my door jam switch and inspect that and it's wires right there,and then pull the interior dome light and inspect for any bare wires that got chafed on the metal in there and or even the dome light itself and of course the vss lines.
least he knows it's for sure this circuit and knows right where to inspect next time if she blows the fuse again or better still,checks things over now at least for anything obvious and address it if spotted.
least he knows it's for sure this circuit and knows right where to inspect next time if she blows the fuse again or better still,checks things over now at least for anything obvious and address it if spotted.