bw_fencer
Juneau, AK
Senior Member
Joined: 09/19/2001
View Profile
 Offline
|
We had the fluid (Transyn) and filters changed in the transmission by a mobile RV service. The transmission seemed to work fine before the service. We warmed it up before the tech showed up, idling it in forward, shifting into reverse and back to forward. We got enough torque movement to cause an uproar by the wife who was doing her face at the time.
After the tech finished he started the engine to warm it up so that he could tweak the final level. He idled it in forward and soon got a trans warning light. The long and the short of it is that the transmission fluid would never warm up and we never felt the torque surge when he engaged it. It is like the fluid was not circulating at all. The original diagnostic code was 25-11 which for the output speed sensor in 1st gear. I tried putting it into reverse at one point and a second code started to show up, 55-17 which is Oncoming C# pressure test (after shift). Now both codes seem to come on the moment we start the engine, with D1 being the 25-11 and D2 being the 55-17. Allison suggested that we let the fluid set over-night and check it both before and after running the engine. The thinking was that the dip stick fluid level would drop if the transmission were circulating. We did that and the level did not change. We will try again with Allison Monday morning but perhaps someone here has some thoughts. Their (Allison's) tendency seems to be to pass it off to a distributor.
We have checked the sensor connections at the transmission and they seem sound. Can anyone guide us to the location of the ECU? That connection needs to be checked for sure.
We have kept up with the maintenance on the transmission and the fluid removed appeared clean and did not smell burnt. The removed filters appeared normal. The current milage is 70,000.
Any thoughts or experiences you can share would really be appreciated. Let's just say that we are in a horrible position for a tow and must work every angle to get this going in place.
BW
2001 Beaver Marquis
|
Deen
Vancouver, WA
Senior Member
Joined: 12/07/2000
View Profile
|
Call the tech back and get them to fix it, it's obviously related to the filter/fluid change. Even if it's a wire loose, the mobile service should fix it.
|
bucky
Eastern Shore of MD
Senior Member
Joined: 05/07/2003
View Profile
|
Are you saying that you had a problem before the fluid was changed? And that was the reason to have it changed? I would hope that a qualified tech would know how many quarts to put back in. I would check the empty containers to make sure that he put in what you think he put in. And that he put enough back in. On the towing side, if you drove into the spot that you are sitting, a winch or strap will get you out to the road without damage. Then they can hook up properly to get you to qualified help. Hope all ends well.
99 F250 PSD CC LB 3.73 4X4 7360 lbs, and it can sink in the mud FAST, 2004 Coachmen Catalina TT 297RKS 8200 lbs on the road.
|
Vulcanmars
Naples, FL
Senior Member
Joined: 10/18/2004
View Profile
Good Sam RV Club
Offline
|
I would find out what filters he put in. He could have put 10w40 in there and not caused an issue. The wrong filter could trigger a code right away.
Mars
06 Rage'n FA3005
04 V10 F250 SDCC 4X4
|
radardog
delaware
Senior Member
Joined: 03/14/2006
View Profile
Offline
|
Vulcanmars wrote:I would find out what filters he put in. He could have put 10w40 in there and not caused an issue. The wrong filter could trigger a code right away. BINGO!!!!!!!!!
The fan always wins
|
|
|
bw_fencer
Juneau, AK
Senior Member
Joined: 09/19/2001
View Profile
Offline
|
No, the transmission responded perfectly before the fluid change. The change was due to the elapsed time between the last change in accordance with the Allison schedule.
The tech came highly recommended and has been doing this for several years that we know of. His business is just fluid changes, primarily RV, and his company has three locations in Texas. He has a truck that is fully set up for this work. The tech does not know what to do, he says he has done hundreds of these and never had a problem. His solution is to have it towed to the distributor 100 miles and some bad road away. It seems foolish to do that before working through all possible options. He is willing to cover the costs if it is something that he did causing the problem. There is always the possibility that it was just bad timing but that seems very unlikely. We are in full communication with the tech, just want to satisfy ourselves that all options have been covered before having it towed and turning it over to another shop. It always seems that having someone else work on our coach causes more trouble that it cures.
Putting a strap on the coach is not so easy. The front cap is quite low and has nothing to connect to on the cap. We might be able to pull it if we can get the tow point on the pulling vehicle low enough. We have not tried that yet. It has to go down a rather abrupt grade and onto a very crowned narrow roadway that is also on a grade and on a curve as well. We will have to get some traffic control if we are going to take it onto the road that slowly. It will have to be towed with the strap for a quarter mile down the highway before there is a spot where it can be properly connected. The coach often drags lightly when it is driven on this route so any increase in front end height will be destructive.
The tech has bulk tanks and pumped the fluid in. The quantity is measured by a meter on the hose. He says he put in 28 quarts. The dip stick shows over full on the warm marks, engine running or not. It is far above the cold full mark. We cannot get the temperature up, thus cannot check it electronically.
We added additional fluid when the problem developed to insure that it was indeed full. Once we get it working, we will adjust it up or down as needed. Since the fluid does not seem to be circulating, we assume that once it does the indicated level will go down as the cooling plumbing is refilled.
|
bw_fencer
Juneau, AK
Senior Member
Joined: 09/19/2001
View Profile
Offline
|
I do agree that pulling the filters and checking them out is a good idea. That is on my list, somewhere after the easier stuff. I wondered if he left the plastic wrap on them but Allison says the filters are not wrapped. The tech says it used the short filters and Allison says it would not be possible to put the long filters in if that is the case. The Allison rep said he is not aware of any problems with filter quality.
|
frankandvicki
Niwot,CO
Senior Member
Joined: 05/31/2007
View Profile
Good Sam RV Club
Offline
|
Not sure if this would have any affect but I would at least try -- disconnect the battery for say 15 minutes to allow the tranny computer to loose it's memory. Then try again to see if you get the codes. Probably will do nothing but worth a try IMHO.
Frank O.
Frank and Vicki
Niwot, CO
2006 Itasca Sunrise 35A
2006 CRV
Roadmaster Falcon Towbar and Baseplate
States visited/camped in, not just driven through.
|
randallb
On the road
Senior Member
Joined: 11/19/2007
View Profile
Offline
|
First and foremost, get the trans fluid level correct. More trans problems are caused by overfilling than people realize. If it is overfilled it will immediately aerate and will not be able to build correct pressures due to the air compressing. If the oil is aerated it will appear pink and possibly foamy on the dipstick. If this occurred it could be days before the air releases from the oil after the level is set. The best bet would be to drain and refill to the correct level. After the level is corrected it will have to be checked on a regular basis until all air releases from the oil. He also could have installed the internal filter incorrectly and it is pulling air between the filter and its mounting point.
Good luck
Randy
|
st687
tampa Fl
Senior Member
Joined: 10/09/2003
View Profile
|
Do you have a 2inch pan or the 4 inch pan
filter and fluid change and refill with 2 inch 31 quarts
filter and fluid change and refill with 4 inch 39 quarts
there is a chance that the filters are reversed or they are the wrong filters.
Check Allison bulletin 1099C
Doris &Bill
97 U270 Foretravel
05 Saturn Vue 265HP
University of Parris Island March 1966
Semper Fi.
|
|
|
