check transmission light

[maureyroad]

Yesterday the shop drained the transmission fluid, put on a new filter and
refilled with synthetic. Now the check transmission light comes on while I am
driving, goes off at idle, and it won't shift into fourth gear. Any ideas?
Dan Williams, 88wb38,Jackson,MS

[Pete Masterson]

I've been running Transynd since I got my coach -- previous owner was using it as well. There has been no issues whatsoever with the transmission.

You may need to visit an Allison dealer and have them read the 'codes' to get some idea of what's going on. I suppose that the synthetic may have loosened some left over gunk from the old dino-fluid that has subsequently clogged or blocked something inside.

To quote from the Transynd brochure: [Natural oils] undergo physical and chemical changes with extended use. Physical changes include sheardown -- permanent viscosity loss.

Chemical change results fromoxidation when oxygen combines with oil molecules to produce peroxides and organic acids. The oil thickens over and becomes more acidic. Sludge and varnish deposits erode shift quality and clutch durability and cause increased component wear.

I believe that it is recommended that the transmission be "flushed" to remove the dino-oil before converting to a synthetic.

Pete Masterson

'95 Blue Bird Wanderlodge WBDA 42

El Sobrante CA

"aeonix1@mac.com"

Photos:

http://picasaweb.google.com/Bluebirdzoom/PeteMasterson#

On May 20, 2009, at 6:43 AM, maureyroad wrote:

Yesterday the shop drained the transmission fluid, put on a new filter and refilled with synthetic. Now the check transmission light comes on while I am driving, goes off at idle, and it won't shift into fourth gear. Any ideas?
Dan Williams, 88wb38,Jackson,MS

[g_man1146]

--- In WanderlodgeForum@yahoogroups.com, "maureyroad" wrote:
>
> Yesterday the shop drained the transmission fluid, put on a new filter and
refilled with synthetic. Now the check transmission light comes on while I am
driving, goes off at idle, and it won't shift into fourth gear. Any ideas?
> Dan Williams, 88wb38,Jackson,MS
>
Dan, Have you checked the fluid level? It wouldn't be the first time a shop
underfilled one. I had it happen to me when we had a '90 Bird. The Wanderlodge
dealer left it 7 quarts low.

Rich D, '99LXi43' CT

[jburgessx2]

Good point! There's a process to filling the Allison tranny and it must be
followed to ensure the needed fluid gets to all the holes. If not, you can end
up wayyyyyy short. Check it and add as needed.

Jerry
85 PT40

--- In WanderlodgeForum@yahoogroups.com, "g_man1146" wrote:
>
> --- In WanderlodgeForum@yahoogroups.com, "maureyroad" wrote:
> >
> > Yesterday the shop drained the transmission fluid, put on a new filter and
refilled with synthetic. Now the check transmission light comes on while I am
driving, goes off at idle, and it won't shift into fourth gear. Any ideas?
> > Dan Williams, 88wb38,Jackson,MS
> >
> Dan, Have you checked the fluid level? It wouldn't be the first time a shop
underfilled one. I had it happen to me when we had a '90 Bird. The Wanderlodge
dealer left it 7 quarts low.
>
> Rich D, '99LXi43' CT
>

[Dan]

It may be just the opposite problem Rich, The book calls for 16 quarts and after we put in four gallons it was still low at the stick so we put in two more quarts. The allison shop said to drive it until the fluid got hot, then find a level spot and check it again. If the level is ok then bring it to their shop and they will read the codes ($105 plus tax minimum charge). If it is too full hot just drain some out.

Dan Williams,88wb38,Jackson,MS

----- Original Message -----

From: "gman1146@optonline.net"

To: "WanderlodgeForum@yahoogroups.com"

Sent: Wednesday, May 20, 2009 12:58 PM

Subject: [WanderlodgeForum] Re: check transmission light

--- In "WanderlodgeForum@yahoogroups.com", "maureyroad" wrote:
>
> Yesterday the shop drained the transmission fluid, put on a new filter and refilled with synthetic. Now the check transmission light comes on while I am driving, goes off at idle, and it won't shift into fourth gear. Any ideas?
> Dan Williams, 88wb38,Jackson,MS
>
Dan, Have you checked the fluid level? It wouldn't be the first time a shop underfilled one. I had it happen to me when we had a '90 Bird. The Wanderlodge dealer left it 7 quarts low.

Rich D, '99LXi43' CT

---

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[GARY MINKER]

Pete always has good thoughts. If for some reason you have heartburn over the Transynd, check these guys out. http://www.schaefferoil.com/ I run their stuff in everything in my 85PT-40, 2000 Excursion and scooter. Gary --- On Wed, 5/20/09, Pete Masterson wrote: From: Pete Masterson Subject: Re: [WanderlodgeForum] check transmission light To: WanderlodgeForum@yahoogroups.com Date: Wednesday, May 20, 2009, 12:05 PM I've been running Transynd since I got my coach -- previous owner was using it as well. There has been no issues whatsoever with the transmission. You may need to visit an Allison dealer and have them read the 'codes' to get some idea of what's going on. I suppose that the synthetic may have loosened some left over gunk from the old dino-fluid that has subsequently clogged or blocked something inside. To quote from the Transynd brochure: [Natural oils] undergo physical and chemical changes with extended use. Physical changes include sheardown -- permanent viscosity loss. Chemical change results fromoxidation when oxygen combines with oil molecules to produce peroxides and organic acids. The oil thickens over and becomes more acidic. Sludge and varnish deposits erode shift quality and clutch durability and cause increased component wear. quote> I believe that it is recommended that the transmission be "flushed" to remove the dino-oil before converting to a synthetic. Pete Masterson '95 Blue Bird Wanderlodge WBDA 42 El Sobrante CA aeonix1@mac. com Photos: http://picasaweb. google.com/ Bluebirdzoom/ PeteMasterson# On May 20, 2009, at 6:43 AM, maureyroad wrote: Yesterday the shop drained the transmission fluid, put on a new filter and refilled with synthetic. Now the check transmission light comes on while I am driving, goes off at idle, and it won't shift into fourth gear. Any ideas? Dan Williams, 88wb38,Jackson, MS

[timvasqz]

air bubbles????. the torque converter holds fluid that wont drain with a flush
alsothe transmission cooling device holds fluid. could be that the two (dino,
synthetic) dont mix. even if they do mix when both are new. the old fluid may be
different than what you think due to heat time ,additives, moisture etc. at
idle there is less throw in the t/c and less slinging oil.
The other possibility is in your post. (wrong filter was used) ( the tech
screwed with a valve when removing the filter??)

Greg 94pt

--- In WanderlodgeForum@yahoogroups.com, "maureyroad" wrote:
>
> Yesterday the shop drained the transmission fluid, put on a new filter and
refilled with synthetic. Now the check transmission light comes on while I am
driving, goes off at idle, and it won't shift into fourth gear. Any ideas?
> Dan Williams, 88wb38,Jackson,MS
>

[Dan]

Looking back, it was the book that was wrong. It takes seven gallons with a filter change not four. I will need to change it one more time after the fluid in the torque converter and coolant lines mix with the synthetic. I double checked the filter and it is the right one so I don't know maybe there was a change in capacity around 1988 when they changed to wide body and the book didn't get changed. I wonder what the book says for 1989 and 1990. Anyway I will change it again when I change the oil and see if the problem repeats.

Dan Williams 88wb38 Jackson MS

----- Original Message -----

From: "Petrover1@aol.com"

To: "WanderlodgeForum@yahoogroups.com"

Sent: Friday, May 22, 2009 10:48 PM

Subject: [WanderlodgeForum] Re: check transmission light

air bubbles????. the torque converter holds fluid that wont drain with a flush alsothe transmission cooling device holds fluid. could be that the two (dino, synthetic) dont mix. even if they do mix when both are new. the old fluid may be different than what you think due to heat time ,additives, moisture etc. at idle there is less throw in the t/c and less slinging oil.
The other possibility is in your post. (wrong filter was used) ( the tech screwed with a valve when removing the filter??)

Greg 94pt

--- In "WanderlodgeForum%40yahoogroups.com", "maureyroad" wrote:
>
> Yesterday the shop drained the transmission fluid, put on a new filter and refilled with synthetic. Now the check transmission light comes on while I am driving, goes off at idle, and it won't shift into fourth gear. Any ideas?
> Dan Williams, 88wb38,Jackson,MS
>

---

No virus found in this incoming message.
Checked by AVG - http://www.avg.com
Version: 8.5.339 / Virus Database: 270.12.37/2129 - Release Date: 05/22/09 17:56:00

[timvasqz]

After you empty the tranny dump the heat exchanger. I wonder if there is a way
to have the tc pickup new fluid? I would just take it to a shop for a check
over and rechange (if needed). it may be that no replacemet oil is needed and
the issue is unrelated. a 20 year old tranny will have proven the same set of
symptoms in relation to like events and tasks completed. A good tech should be
able to draw limited possibilities and eliminate each quickly while the pan is
off and the recently replace oil is in a clean container.
Greg of Tim and Greg


--- In WanderlodgeForum@yahoogroups.com, "Dan" wrote:
>
> Looking back, it was the book that was wrong. It takes seven gallons with a
filter change not four. I will need to change it one more time after the fluid
in the torque converter and coolant lines mix with the synthetic. I double
checked the filter and it is the right one so I don't know maybe there was a
change in capacity around 1988 when they changed to wide body and the book
didn't get changed. I wonder what the book says for 1989 and 1990. Anyway I
will change it again when I change the oil and see if the problem repeats.
> Dan Williams 88wb38 Jackson MS
> ----- Original Message -----
> From: timvasqz
> To: WanderlodgeForum@yahoogroups.com
> Sent: Friday, May 22, 2009 10:48 PM
> Subject: [WanderlodgeForum] Re: check transmission light
>
>
>
>
>
> air bubbles????. the torque converter holds fluid that wont drain with a
flush alsothe transmission cooling device holds fluid. could be that the two
(dino, synthetic) dont mix. even if they do mix when both are new. the old fluid
may be different than what you think due to heat time ,additives, moisture etc.
at idle there is less throw in the t/c and less slinging oil.
> The other possibility is in your post. (wrong filter was used) ( the tech
screwed with a valve when removing the filter??)
>
> Greg 94pt
>
> --- In WanderlodgeForum@yahoogroups.com, "maureyroad" wrote:
> >
> > Yesterday the shop drained the transmission fluid, put on a new filter and
refilled with synthetic. Now the check transmission light comes on while I am
driving, goes off at idle, and it won't shift into fourth gear. Any ideas?
> > Dan Williams, 88wb38,Jackson,MS
> >
>
>
>
>
>
>
> ------------------------------------------------------------------------------
>
>
>
> No virus found in this incoming message.
> Checked by AVG - http://www.avg.com
> Version: 8.5.339 / Virus Database: 270.12.37/2129 - Release Date: 05/22/09
17:56:00
>