2002 Transmission Troubles!
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From: Central Illinois
2002 Transmission Troubles!
2002 V10, 3:73, not towning!
I got about 2 hours into an 8 hour trip yesterday and the Transmission started acting up. It acted like it just couldn't hold overdrive. It was downshifting from OD at the slightest grade and then wouldn't shift back in for a few minutes. I was watching the temp on the factory "idiot" gauge and all looked fine until it just instantly went from normal to pegged. The "check gauge" light came on and I slowed down to let it cool. It was only pegged for a couple of minutes. I checked the fluid and it appeared a little low, so I added a quart and tried it again. It still wouldn't stay in OD unless the road was flat and the speed constant. I limped it home and took the taurus.
The truck has 38,200 miles on it. I installed the sonax valve and tricumulator springs 10K miles ago. I guess I better remove those and take it into the dealer. Any ideas?
Matt
I got about 2 hours into an 8 hour trip yesterday and the Transmission started acting up. It acted like it just couldn't hold overdrive. It was downshifting from OD at the slightest grade and then wouldn't shift back in for a few minutes. I was watching the temp on the factory "idiot" gauge and all looked fine until it just instantly went from normal to pegged. The "check gauge" light came on and I slowed down to let it cool. It was only pegged for a couple of minutes. I checked the fluid and it appeared a little low, so I added a quart and tried it again. It still wouldn't stay in OD unless the road was flat and the speed constant. I limped it home and took the taurus.
The truck has 38,200 miles on it. I installed the sonax valve and tricumulator springs 10K miles ago. I guess I better remove those and take it into the dealer. Any ideas?
Matt
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From: Central Illinois
The OD light flashed for a while at a couple different times. Does that mean there will be a code to read if I plug into the OBD port even though there is no light at this time?
Post Fiend
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From: USA
As far as DTC stored ,yes there can be codes stored even if the cel is not on .
when driving the truck now can you cancel overdrive ? with the button on lever?
I would also look into the vss sensor in the rear diff being dirty .
Rich
when driving the truck now can you cancel overdrive ? with the button on lever?
I would also look into the vss sensor in the rear diff being dirty .
Rich
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From: Central Illinois
Forty,
Everything seems fine now, no OD light flash and the OD off switch works. That is what bothers me. If I take it to a dealer and have them plug into it, they should be able to tell me what fault codes were logged? Doesn't the VSS sensor feed the speedometer? I didn't see any ABS light or speedo troubles at all. Is there a Transmission VSS sensor on the tranny in addition to the usual one in the rear end?
Everything seems fine now, no OD light flash and the OD off switch works. That is what bothers me. If I take it to a dealer and have them plug into it, they should be able to tell me what fault codes were logged? Doesn't the VSS sensor feed the speedometer? I didn't see any ABS light or speedo troubles at all. Is there a Transmission VSS sensor on the tranny in addition to the usual one in the rear end?
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Paid $74.16 to the Ford Dealer for one hour of labor (minimum) to "diagnose" the problem. The read two codes; P0783 - 3-4 Shift Error & P1783 Trans Over Temp.
I could have looked at a list of possible codes and picked these two out just based on what was happening. They think it was probably a solenoid sticking and it may never happen again. I just have to drive it until something else happened.
So, if it is a solenoid sticking and I am 500 miles from home, is there something I can do to unstick it? Where is Mark Kovalsky when you need him. I need one of those Batman searchlights with MK on it.
I could have looked at a list of possible codes and picked these two out just based on what was happening. They think it was probably a solenoid sticking and it may never happen again. I just have to drive it until something else happened.
So, if it is a solenoid sticking and I am 500 miles from home, is there something I can do to unstick it? Where is Mark Kovalsky when you need him. I need one of those Batman searchlights with MK on it.
Last edited by nafzimo; Nov 24, 2003 at 12:51 PM.
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Post Fiend
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From: USA
Nafizmo!
Here is what is in the manual for your DTC code
p0783-
Descrpition: 3-4 shift error
Condition:
Engine RPM drop not detected when 3-4 shift was commanded by the pcm.
Symptom: Incorrect gear selection depending on failure mode and transmission range selector position
Refer to Solenoid operation chart.Shift errors may also be due to other internal trans concernssuch as stuck valves or damaged friction material.
The vss feeds the pcm ,which feeds the speedo
all sensor inputs go to the pcm then outbound.
When have you changed your tranny fluid ?
Also Ford techs have a diagnostic tool that can excercise all the solenoids within your tranny .
Did they use it or just give you the brush off ,"come back when it fails"?
Rich
Here is what is in the manual for your DTC code
p0783-
Descrpition: 3-4 shift error
Condition:
Engine RPM drop not detected when 3-4 shift was commanded by the pcm.
Symptom: Incorrect gear selection depending on failure mode and transmission range selector position
Refer to Solenoid operation chart.Shift errors may also be due to other internal trans concernssuch as stuck valves or damaged friction material.
The vss feeds the pcm ,which feeds the speedo
all sensor inputs go to the pcm then outbound.
When have you changed your tranny fluid ?
Also Ford techs have a diagnostic tool that can excercise all the solenoids within your tranny .
Did they use it or just give you the brush off ,"come back when it fails"?
Rich
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From: Central Illinois
They had it for about 30 minutes total. The bill states "Elec Trans Test Performed". Whatever was causing it, it isn't doing it now. I dronve it about 80 miles today with no problems. But I hate to take off on a long trip in it now for fear it will stick for good.
I changed the fluid at 28K miles with the valve\spring install.
Something else to consider, as I limped it home, the thing shifted very hard... like I had been rearended by a truck. Was the tranny uping the pressures to accomadate some lack of a sensor input?
I changed the fluid at 28K miles with the valve\spring install.
Something else to consider, as I limped it home, the thing shifted very hard... like I had been rearended by a truck. Was the tranny uping the pressures to accomadate some lack of a sensor input?
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From: Central Illinois
Well, I made it 15K miles with no additional transmission problems. It started intermittently shifting really hard this week. Last night it wouldn't shift into OD. The OD light only blinked for a few minutes early in the week. If it is the 4th gear shift solenoid, where is it? Can I change it? The truck is long out of warranty now.
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Well, the problem has been off and on, so I finally took it back to the dealer. They pulled the pan and said that the fluid was burnt and full of clutch material. The dealer says a new (rebuilt, I assume) transmission would be cheaper than rebuilding the original. $3161. I am in the process of trying to get Ford to cover some of the cost. The truck has 56K miles now but the problem first started at 38K. This along with the broken lumbar, cruise intermittently working, bad tie-rod ends... I think I will sell it and look for a different brand. I have better luck with 150K mile trucks than this 2 year old one.
Post Fiend
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Wait...
I don't understand....
you changed internal parts, what was it ? springs valves, etc...
and want to give ford the credit for it failing ???
Hate to say this, but if I sell you a computer, and you go inside it to change a card, drop a screw in there and then it fails... should I give you a new computer ???
BUT, I would never have let it go this far without addressing it when it first came up...
things don't usually fix themselves in my experience....
but if you have the documentation from all your tranny services, and from when you brought it in for the problems... it won't hurt to ask them to help you with it...
be nice, be firm, and see what they will do for you...
there is a LOT of room in their customer appreciation budget for nice people
I don't understand....
you changed internal parts, what was it ? springs valves, etc...
and want to give ford the credit for it failing ???
Hate to say this, but if I sell you a computer, and you go inside it to change a card, drop a screw in there and then it fails... should I give you a new computer ???
BUT, I would never have let it go this far without addressing it when it first came up...
things don't usually fix themselves in my experience....
but if you have the documentation from all your tranny services, and from when you brought it in for the problems... it won't hurt to ask them to help you with it...
be nice, be firm, and see what they will do for you...
there is a LOT of room in their customer appreciation budget for nice people
Cargo Master
Joined: Oct 2003
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From: Jefferson, Iowa
Check the torque convertor, on the E4OD's they had some tc's that would slip and it would raise the line pressure to compensate. If the tc lock up clutch was slipping, the tranny could overheat. Another thing it could be is a bad tps sensor, if it was sending a higher signal than what should be, it could keep on unlocking the t/c and downshifting, at those speeds the tranny needs to be locked up to keep the tranny cooler, that could be your problem right there.
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Originally Posted by 78fordman
Check the torque convertor, on the E4OD's they had some tc's that would slip and it would raise the line pressure to compensate. If the tc lock up clutch was slipping, the tranny could overheat. Another thing it could be is a bad tps sensor, if it was sending a higher signal than what should be, it could keep on unlocking the t/c and downshifting, at those speeds the tranny needs to be locked up to keep the tranny cooler, that could be your problem right there.
jdadamsjr - yep, I changed internal parts, parts that are designed to make a transmission last longer. A firmer shift means less slipping and more clutch life. I think this is an unrelated issue. And what was I supposed to do to fix it earlier? The dealer said drive it when I took it to them!
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