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Slipping Trans

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Old Jul 22, 2012 | 04:58 PM
  #16  
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Originally Posted by Aune163rd
You just did a tranny cooler install didnt you? Did you make sure that you had enough fluid to compensate for the larger cooler?
yeah i checked fluid level after cooler install and topped it off.
 
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Old Jul 22, 2012 | 05:28 PM
  #17  
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Originally Posted by trackspeeder
Much better description here compared to OB net.

Reset the TPS. Road test it.
so your final answer is reset tps and road test, not pressure test the trans?
 
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Old Jul 22, 2012 | 07:23 PM
  #18  
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Originally Posted by '94IDITurbo7.3
so your final answer is reset tps and road test, not pressure test the trans?
Yes sir it is. The shift points are drawn out, not slipping.

This is why you still have average tranny temps. If the tranny is slipping you would have much higher than average temps.

You can advance the TPS a little then road test. Or use a volt meter then road test. Either way play with the TPS and see what happens.
 
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Old Jul 22, 2012 | 07:45 PM
  #19  
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Originally Posted by trackspeeder
Yes sir it is. The shift points are drawn out, not slipping.

This is why you still have average tranny temps. If the tranny is slipping you would have much higher than average temps.

You can advance the TPS a little then road test. Or use a volt meter then road test. Either way play with the TPS and see what happens.
ok i will do that, just kind of weird how it has been just fine, then all of a sudden went wacky, now appears to be fine again.
 
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Old Jul 22, 2012 | 07:51 PM
  #20  
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Gremlins.
 
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Old Jul 22, 2012 | 07:59 PM
  #21  
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Originally Posted by trackspeeder
Gremlins.
hate them little things
 
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Old Jul 22, 2012 | 09:16 PM
  #22  
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From: Mi'kma'ki
hmm.then it sounds like it might be a bad ground,or hot wire to the tps.
with your meter,check to make sure your getting 5 volts at the orange/white wire using the ground wire at the tps,the black/white wire.wiggle the wires around while testing to see if the voltage drops out.if so one of the wires is bad.the article says this is common due to the vibration of the diesel.
if your not getting 5 volts between these wires,then use the negative terminal on a battery and test the tps' orange/white wire between direct ground.if you get 5 volts then,then wiggle the wires to see if its the hot wire from the ecm.if it stays at 5 volts while wiggling wires,then run a new ground wire to the tps,or trace out and replace the stock ground wire.
you can turn the key off,set your meter to ohms to read resistance between ground terminal of battery and the black/white wire.ideally you'd want 0 ohms,but perhaps a little bit is expected here? i never checked mine to see.probably should.the article doesn't give anything for acceptable resistance value here.probably because there shouldn't be any ideally.
since it's acting up,and giving late shifts only sometimes,then i bet this is where you'll find the problem (if the sensor is in fact 100% of course.)
during these tests,post each result please.

here's a cool pic to help you run all 3 new wires to the tps from the main harness if need be:

so you'd want to make sure,if you do find an issue with the ground @ the TPS.that the main harness at pin 15 is getting a no resistance value ground too,or all the sensors and solenoids could play tricks on ya.
thats if im not misunderstanding the diagram,and these ecm pins are just for this aftermarket controller.
i should have a stock e40d main harness pin pic on file really.
 
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Old Jul 22, 2012 | 09:47 PM
  #23  
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From: Sweet home Alabama
Originally Posted by FORDF250HDXLT
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.

I guess its a 60/40 toss, My fluid is super clean I hate to spend 1200.00 on rebuilding something that doesnt need but Id also hate to loose a 500.00 converter too I found Ford doesnt recommend Mercron V or dual purpose Mercron fluid only Mercron II or dexron II or IIe and I have M V dual purpose in mine..But any way I'm going to yank and do a converter and Valve body upgrades change out the fluid and filter cross my fingers.
Sorry about the hijack...
 
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Old Jul 22, 2012 | 09:51 PM
  #24  
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From: Mi'kma'ki
mercon V was reformulated to meet older mercon specs too back years ago.
i run mercon V in mine.
 
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Old Jul 22, 2012 | 10:18 PM
  #25  
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I guess its just Ford protecting there a** I just hope all that fixes it.
 
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Old Jul 23, 2012 | 08:13 AM
  #26  
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Originally Posted by FORDF250HDXLT
hmm.then it sounds like it might be a bad ground,or hot wire to the tps.
with your meter,check to make sure your getting 5 volts at the orange/white wire using the ground wire at the tps,the black/white wire.wiggle the wires around while testing to see if the voltage drops out.if so one of the wires is bad.the article says this is common due to the vibration of the diesel.
if your not getting 5 volts between these wires,then use the negative terminal on a battery and test the tps' orange/white wire between direct ground.if you get 5 volts then,then wiggle the wires to see if its the hot wire from the ecm.if it stays at 5 volts while wiggling wires,then run a new ground wire to the tps,or trace out and replace the stock ground wire.
you can turn the key off,set your meter to ohms to read resistance between ground terminal of battery and the black/white wire.ideally you'd want 0 ohms,but perhaps a little bit is expected here? i never checked mine to see.probably should.the article doesn't give anything for acceptable resistance value here.probably because there shouldn't be any ideally.
since it's acting up,and giving late shifts only sometimes,then i bet this is where you'll find the problem (if the sensor is in fact 100% of course.)
during these tests,post each result please.

here's a cool pic to help you run all 3 new wires to the tps from the main harness if need be:

so you'd want to make sure,if you do find an issue with the ground @ the TPS.that the main harness at pin 15 is getting a no resistance value ground too,or all the sensors and solenoids could play tricks on ya.
thats if im not misunderstanding the diagram,and these ecm pins are just for this aftermarket controller.
i should have a stock e40d main harness pin pic on file really.
ok thanks. i will run those tests tomorrow and report back.
 
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Old Jul 23, 2012 | 07:34 PM
  #27  
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i think it's safe to say it is an electrical issue. today going to work and on the way home from work everything worked fine. i will still check out my tps tomorrow though.
 
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Old Jul 24, 2012 | 01:08 PM
  #28  
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i did those tests today that f250 said to do.

5VDC @ o/w wire using ground @ TPS - 5.00 VDC

same results when going from o/w wire to the neg bat post.

ohm the ground circuit of tps - .51 ohms using 20K ohm scale on my DVOM.

B- to the sig wire on tps = .99vdc @ idle & 3.87VDC @ WOT. (sweep is good)


found something kind of odd though. when doing the ohm test i had the key off obviously, then once i got done ohming it out it flipped my meter to the vdc setting and got a reading of .02VDC KOEO on the ground circuit of the TPS.
 
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Old Jul 24, 2012 | 02:31 PM
  #29  
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From: Mi'kma'ki
you wiggled the wires around good at the TPS and the harness at the ecm too while measuring the orange/white wire for 5V? your looking for a brake in the wire,so wiggle all you can.have you cleaned the TPS and main harness connectors and applied non conductive dialectic grease yet?
that said,your TPS settings are still incorrect.my trans would hate those settings.i would probably hate them more lol! in fact iv tried them,because there has been a lot of incorrect setting values posted (because of the bulletin before the revived one) and the trans acted like a turd there.she loves the 1.2V idle/4V WOT.
 
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Old Jul 24, 2012 | 04:30 PM
  #30  
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Originally Posted by FORDF250HDXLT
you wiggled the wires around good at the TPS and the harness at the ecm too while measuring the orange/white wire for 5V? your looking for a brake in the wire,so wiggle all you can.have you cleaned the TPS and main harness connectors and applied non conductive dialectic grease yet?
that said,your TPS settings are still incorrect.my trans would hate those settings.i would probably hate them more lol! in fact iv tried them,because there has been a lot of incorrect setting values posted (because of the bulletin before the revived one) and the trans acted like a turd there.she loves the 1.2V idle/4V WOT.
oops. forgot to wiggle the wires.

at those settings what rpm does your truck upshift at during normal, civilized acceleration?
 
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