cold transmission problems

[Off_Road]

Regardless of which fluid to use msrjeep and (smiles) I agree with you about the debate. Although Amsoil has been highly tested and proven in all model applications for over the past 30 years.

Law enforcement use it, military branches of our government. Again your right, we can debate this all day. To each their own as I always say. But regardless of which fluid used. What are your thoughts concerning the flushing method I described in the above prior post?

And I do agree with you concerning the flash. This is odd that his problem with the trans just seems to have fixed itself and gone away. Maybe it wasn't the 2-3 shift, but the converter clutch applying. The electrical in the ignition fixing that?????

[j2arch]

What do you mean by the "flash"

[Off_Road]

I meant what msrjeep had referenced:

Posted by msrjeep - 12-09-2004 at 12:24 AMi would recommend only using chrysler ATF+4. but we could debate this all day long. you might also consider a flash to the tranny module.

[j2arch]

Ok, but I dont understand what this is meant to mean, (you might also consider a flash to the tranny module). Can you help a slow learner out? thanks again

[dksob81]

when they flash the TCM, it means to update the software of the Transmission control Module.

[McCann]

Hi All,

Man what an awesome website...autoforum rocks!

Another update on the transmission chemical flush we did 6 weeks ago.

It is 3 weeks (22 days) since I last checked in and the weather is definitely getting colder in Nebraska. SO FAR SO GOOD. No complaints from the wife who has put another 500 miles of in town driving on the truck. It has shifted fine when I drive it so....a big yeah!

I do know that they did some chemical flush and drove the truck with that in there for a few miles...the above home remedy does save the bucks but I wonder if that chemical flush did the trick? I might try the above mentioned method though next time.

I pray our shift problem is solved and won't check into this thread with another shifting update unless it is bad news...so hope you don't see me here.

Happy Holidays Mike

[jbrowne51]

Originally Posted by j2arch

I have a 99 GC and have been having problems with the transmission for a while but it is getting worse with the coming of winter. When the transmission is cold, it will not shift from 2nd to 3rd. After driving for a while (1/2 mile) it then warms up and changes. I have changed the fluid (5 quarts) and the filter but still no luck. I am now be quoted prices of 1500 to 2500 to fix if somthing major is wrong. Has anyone else experianced this?

Thanks

I experienced what I believe to be the same problem with my '98 Jeep Grand Cherokee (57k). It would not shift from 2nd to 3rd but only when cold. Solution: Replaced the piston seals on the forward/direct clutch pack. Prior to finding the solution I paid for a complete fluid change/flush & I also paid for a new Governor Valve and Throttle Pressure Valve.

[dksob81]

Originally Posted by McCann

Hi All,

Man what an awesome website...autoforum rocks!

Another update on the transmission chemical flush we did 6 weeks ago.

It is 3 weeks (22 days) since I last checked in and the weather is definitely getting colder in Nebraska. SO FAR SO GOOD. No complaints from the wife who has put another 500 miles of in town driving on the truck. It has shifted fine when I drive it so....a big yeah!

I do know that they did some chemical flush and drove the truck with that in there for a few miles...the above home remedy does save the bucks but I wonder if that chemical flush did the trick? I might try the above mentioned method though next time.

I pray our shift problem is solved and won't check into this thread with another shifting update unless it is bad news...so hope you don't see me here.

Happy Holidays Mike

McCANN where did u get this chemical flush done at, dealership?

[mx52nv]

also, try adding the Chrysler friction modifier from NAPA.

[McCann]

Hi dk,

It was at Garrett Tire Center in Kearney, NE. The owner I spoke with said he had seen it where a piece of lint type material or debris will cause a valve or something to not close or to stick (or something... heck, I am just plain ignorant when it comes to transmissions) and just changing fluid would not work...had to do the chemical flush. I will speak to him tomorrow and see if he can give us some more information.

I'll post his answer as soon as I get it.

And it is still all good with the shifting.

Mike

[McCann]

dk,

Forgot to mention that Garrett tire is not an auto or jeep dealer...just tires and auto repair. Mike

[dksob81]

Thanks McCann, yea there are a couple of Lube changes here in the Sharon, Pa, I wonder if they do the chemical Flush, I guess I will have to check. I know they and the Dealership does the fluid flush (runs fluid through the entire tranny and lines under pressure to help flush out any gunk and stuff). I am having a problem with my tranny shifting, it shifts fine from 1st - 2nd around 12-15 mph, then shifts again around 19/20 mph (this shift is a lil slow/delayed shift) and it is quite annoying, I have changes Fluid/filter but shift still exist, so I think the chemical flush will help.

Thank for the Info.

[rwhoke]

Quote:
--------------------------------------------------------------------------------
Originally Posted by j2arch
I have a 99 GC and have been having problems with the transmission for a while but it is getting worse with the coming of winter. When the transmission is cold, it will not shift from 2nd to 3rd. After driving for a while (1/2 mile) it then warms up and changes. I have changed the fluid (5 quarts) and the filter but still no luck. I am now be quoted prices of 1500 to 2500 to fix if somthing major is wrong. Has anyone else experianced this?

Thanks

I am having the smae problem.. dealer says it is normal - i am having them look at it again, but I dont think they know how to fix the clunky shifting from 2nd to 3rd. fluids are all good.

[McCann]

Hi All,

Okay, I lied...I said I wouldn't check into this thread again unless I had a problem with the tranny shifting after the chemical flush.

It is still working great after almost 2 months.

I finally found the chemical product that worked. Before I share anymore, I want to say that this is not a commercial...I sell real estate...not chemical flushes.

According to my service guy, (see deeper in the thread for who) the product is a two step process made by BG. He called it a BG transmission flush. I asked if he could show it to me. There were two small cans shrinked wrapped together with each can about the size of a 12oz cola. One said "Quick Clean" and the other said "ATC Plus" .

He said they add one can and then drive (or run) the vehicle for about 10 or 15 minutes. They then drain all the tranny oil including the converter, and change the filter.

They add all new tranny fluid and the 2nd can of BG product. That is about all I know. I did find a website for BG but no specific mention of this product. (I did not search that long, though)

We have put about 700 miles on since I last posted and all is good.

Hope this helps someone...beats a new tranny this winter anyway.

Mike

[jacclark]

Is this problem the same as mine? I have trouble with 3rd to 4th and 4th to overdrive. My Jeep had the tranny done under the original warranty around 50,000 miles and now it has 110,000 miles - is the same problem as before? I really don't want to spend $1500 for a tranny job!