Slipping Trans
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Postmaster
Joined: Jul 2011
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Slipping Trans
left work today and trans was and still is slipping really bad. taking off in first even with EASY throttle input it will easily rev to 3k rpm. there were a couple times that i was running 55mph and turning 2500rpm in 3rd gear conveter unlocked. the conveter does not want to lock up at all. when it does lock it is a very slow engagement. each gear no matter what kind of throttle input revs out to 3k rpm then has a very firm shift. no o/d light flashing.
fluid level is good, color is good, smells good, temps are good.
fluid level is good, color is good, smells good, temps are good.
Senior User
Joined: Apr 2012
Posts: 240
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From: Prosser, WA
Thats the route i went, i hate autos and they cost too much to rebuild, when i got my truck i found out it was on its 2nd trans and it turned out the one i set to the scrapper was a amco lifetime warranty... too bad i didnt have any paper work to go with it,
than i just found out the trans computer is worth money.... LOL didnt even think about that LOL.
well Good luck with your rebuild
Rob
than i just found out the trans computer is worth money.... LOL didnt even think about that LOL.
well Good luck with your rebuild
Rob
Fleet Owner
Joined: Jul 2006
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From: Mi'kma'ki
are you sure a particular gear was slipping? which one?
if you manually shift into first and second,do the those gears feel strong then?
if the converter doesn't lock up,and you enter 4th gear,the ecm should toss code 62,the OD light should be flashing,the trans should be in limp mode,and have very firm,late shifts.but your not getting OD (4th) gear at all?
did you already inspect and clean the solenoid pack plug?
you say the trans was "still" slipping badly.when did it first happen?
if you manually shift into first and second,do the those gears feel strong then?
if the converter doesn't lock up,and you enter 4th gear,the ecm should toss code 62,the OD light should be flashing,the trans should be in limp mode,and have very firm,late shifts.but your not getting OD (4th) gear at all?
did you already inspect and clean the solenoid pack plug?
you say the trans was "still" slipping badly.when did it first happen?
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Postmaster
Joined: Jul 2011
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are you sure a particular gear was slipping? which one?
if you manually shift into first and second,do the those gears feel strong then?
if the converter doesn't lock up,and you enter 4th gear,the ecm should toss code 62,the OD light should be flashing,the trans should be in limp mode,and have very firm,late shifts.but your not getting OD (4th) gear at all?
did you already inspect and clean the solenoid pack plug?
you say the trans was "still" slipping badly.when did it first happen?
if you manually shift into first and second,do the those gears feel strong then?
if the converter doesn't lock up,and you enter 4th gear,the ecm should toss code 62,the OD light should be flashing,the trans should be in limp mode,and have very firm,late shifts.but your not getting OD (4th) gear at all?
did you already inspect and clean the solenoid pack plug?
you say the trans was "still" slipping badly.when did it first happen?
i am going back out later tonight and i will try to manually shift 1,2 and see what happens.
normally i could feel the converter lock in 3rd and then lock up again in o/d. i could not feel any lock up at any time on the way home today.
the o/d light is not blinking. never lit up at all. i was waiting for that little ******* to show it's ugly face, but he never did
. it is defiantly NOT in limp mode. i have unfortunately had that a number of times.it will eventually "fall" into OD if i maintain throttle position at 55mph. then once it does fall into od, converter locked rpms are like normal.
i will inspect the solenoid pack plug tomorrow.
i meant that the trans started slipping as soon as i left work today and did not change by the time i got home. everything was fine this morning and showed zero signs of anything being wrong.
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Postmaster
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i took a video of showing the tach and the speedo from a stop to about 50 mph. i can't upload right now due to slow internet.
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Fleet Owner
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From: Mi'kma'ki
oh ok.well first thing is,your trans isn't slipping at all.so that's good news.
probably a bad TPS by the sounds of it.i never liked your passed voltage postings anyway.looks like you'll be making sure it's all good now.
fyi,
the converter locks up in 3rd gear and remains there.you shouldn't feel it unlock/lock during an OD shift.you should feel it unlock/lock during a OD to 3rd downshift under load though.
if its not a bad ground,or a faulty TPS id be surprised.whatever it is,it's just an electrical gremlin by the sounds of it.not a slipping trans.so that's good.
probably a bad TPS by the sounds of it.i never liked your passed voltage postings anyway.looks like you'll be making sure it's all good now.
fyi,
the converter locks up in 3rd gear and remains there.you shouldn't feel it unlock/lock during an OD shift.you should feel it unlock/lock during a OD to 3rd downshift under load though.
if its not a bad ground,or a faulty TPS id be surprised.whatever it is,it's just an electrical gremlin by the sounds of it.not a slipping trans.so that's good.
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Joined: Aug 2011
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From: Sweet home Alabama
If you find the wires on the passenger side (solenoid pack) are bad I found a place that sells replacement plugs with pig tails...Hope yours is an easy fix, Mines started to shutter last week and Friday I started to feel a vibration too 
so now I get to do a full rebuild myself...Its gonna be really fun
Transmission Parts Solenoids Wiring harness repair kit, E4OD, 1989-94
so now I get to do a full rebuild myself...Its gonna be really funTransmission Parts Solenoids Wiring harness repair kit, E4OD, 1989-94
Fleet Owner
Joined: Jul 2006
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From: Mi'kma'ki
maybe just a failing converter there kobaltblue.no point in replacing clutch packs if their not slipping.a converter is pricey enough.
catch the failing converter now,before she takes out the packs,and who knows what else,and you'll probably be good to go.perhaps toss an aux filter in line for a bit,for good measure.thats what id do if i experienced those symptoms.fortunately,i was able to replace the failure prone e40d converter with a good one from racerx before i run into the issue.
catch the failing converter now,before she takes out the packs,and who knows what else,and you'll probably be good to go.perhaps toss an aux filter in line for a bit,for good measure.thats what id do if i experienced those symptoms.fortunately,i was able to replace the failure prone e40d converter with a good one from racerx before i run into the issue.
Logistics Pro
Joined: Sep 2010
Posts: 4,411
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From: Victor, MT
I am wondering if my 4R100's converter is starting to fail, its not throwing any codes. I can get it to slam into the next gear once in a while for some reason, like the pump aint got any fluid then all of a sudden there it is and it jumps. The guys at the V10 forum said PO put a tune into the ECM, which is incorrect. I was thinking its either a failing converter or pump because of the fact that most of the time it shifts like new, although when it shifts to overdrive you cant even feel it except when the converter is locked in 4th. It just slides into OD most of the time, is there a way to firm up the shifts and maybe increase line pressure or something?
Sorry for the highjack!!
Sorry for the highjack!!
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Postmaster
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oh ok.well first thing is,your trans isn't slipping at all.so that's good news.
probably a bad TPS by the sounds of it.i never liked your passed voltage postings anyway.looks like you'll be making sure it's all good now.
fyi,
the converter locks up in 3rd gear and remains there.you shouldn't feel it unlock/lock during an OD shift.you should feel it unlock/lock during a OD to 3rd downshift under load though.
if its not a bad ground,or a faulty TPS id be surprised.whatever it is,it's just an electrical gremlin by the sounds of it.not a slipping trans.so that's good.
probably a bad TPS by the sounds of it.i never liked your passed voltage postings anyway.looks like you'll be making sure it's all good now.
fyi,
the converter locks up in 3rd gear and remains there.you shouldn't feel it unlock/lock during an OD shift.you should feel it unlock/lock during a OD to 3rd downshift under load though.
if its not a bad ground,or a faulty TPS id be surprised.whatever it is,it's just an electrical gremlin by the sounds of it.not a slipping trans.so that's good.
the reason i have had my tps readings so low is b/c if i set it to a higher voltage then the trans shifts way later and firmer, but i guess i will try adjusting it again. would be really nice if i could get it to kick down sooner and easier.
More Turbo
Joined: Feb 2004
Posts: 643
Likes: 3
From: North Branford
i tried shifting it manual 1,2, then into o/d. 1 and 2 felt strong when manually shifting them. this morning the trans worked fine.
the reason i have had my tps readings so low is b/c if i set it to a higher voltage then the trans shifts way later and firmer, but i guess i will try adjusting it again. would be really nice if i could get it to kick down sooner and easier.
the reason i have had my tps readings so low is b/c if i set it to a higher voltage then the trans shifts way later and firmer, but i guess i will try adjusting it again. would be really nice if i could get it to kick down sooner and easier.
Reset the TPS. Road test it.
