transmission acting up again this year in the cold. Last yea

jrsavoie · **Posted:** Sun Dec 20, 2015 9:58 pm

transmission acting up again this year in the cold.
Last year after it got cold the transmission was not acting right.
It does not shift fast enough and will slip if you rev the Jeep.
It did the exact same thing last year. Shifting slow and will slip if you apply to many RPM's
Worked fine all summer.
I have Amsoil ATF that is Type 4 or whatever rated.
Any ideas on what My issue might be? Are there any additives that may help?
Should I service the transmission? It has about 20,000 miles since the install of the European torque converter and the last service.

It's garaged every night - unheated garage, but garaged.

It helps considerably with the shifting when the Jeep has been plugged in all night and it shifts fine after being fully warmed up.

Not necessarily when the thermometer shows it's warm, but after it has been run long enough that the transmission is warm

flash7210 · **Posted:** Sun Dec 20, 2015 10:34 pm

When the transmission is cold the TCM wont allow the TC lockup clutch to apply.
Its annoying but usually goes away after 5 to 10 min of driving.

Efren_Hinojosa · **Joined:** Sat Jul 18, 2015 11:29 pm **Posts:** 42

To me it sounds like you have some worn seals inside the trans. I dont know what may be compatible with the atf+ formula. You can try adding something to make those seals swell but the correct fix would be a rebuild. I had a similar issue with a tracker i had, added high mileage fluid and never slipped when cold again.

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jrsavoie · **Posted:** Tue Dec 22, 2015 11:51 am

In other posts it was mentioned that the transmission dipstick was to long.

Has anybody determined how much the transmission dipstick should be shortened?

A good method of shortening the dipstick?

flash7210 · **Posted:** Tue Dec 22, 2015 12:01 pm

The general consensus is, fill it up to the full-hot mark and then add another quart.
This transmission seems to work better when over filled.

Silverbullet · **Posted:** Tue Dec 22, 2015 5:06 pm

flash7210 wrote:

The general consensus is, fill it up to the full-hot mark and then add another quart.
This transmission seems to work better when over filled.

Are you doing this while trans is hot or cold?

Ben

ATXKJ · **Posted:** Tue Dec 22, 2015 6:00 pm

jrsavoie wrote:

I have Amsoil ATF that is Type 4 or whatever rated.

if it's Amsoil - it's not Mopar +4.

the transmission line pressures and clutches are designed specifically for +4 fluid and the additives package

other stuff doesn't work as well.

jrsavoie · **Posted:** Tue Dec 22, 2015 8:10 pm

Silverbullet wrote:

flash7210 wrote:

The general consensus is, fill it up to the full-hot mark and then add another quart.
This transmission seems to work better when over filled.

Are you doing this while trans is hot or cold?

Ben

Times 2

I would assume hot, but I've been wrong before

Is there a good additive for this transmission fluid?

flash7210 · **Posted:** Tue Dec 22, 2015 8:16 pm

jrsavoie wrote:

Silverbullet wrote:

flash7210 wrote:

The general consensus is, fill it up to the full-hot mark and then add another quart.
This transmission seems to work better when over filled.

Are you doing this while trans is hot or cold?

Ben

Times 2

I would assume hot, but I've been wrong before

Is there a good additive for this transmission fluid?

Engine cold, fill it to the full-hot mark, then add some more.
Additive not necessary.

jrsavoie · **Posted:** Wed Dec 23, 2015 3:05 am

The general consensus is, fill it up to the full-hot mark and then add another quart.
This transmission seems to work better when over filled.

Are you doing this while trans is hot or cold?

Times 2

I would assume hot, but I've been wrong before

Is there a good additive for this transmission fluid?[/quote]

Engine cold, fill it to the full-hot mark, then add some more.
Additive not necessary.[/quote]

My concern about additive had to do with my cold shifting issue. I was hoping there was an additive that would help address the issue.

jrsavoie · **Posted:** Wed Dec 23, 2015 4:05 am

ATXKJ wrote:

jrsavoie wrote:

I have Amsoil ATF that is Type 4 or whatever rated.

if it's Amsoil - it's not Mopar +4.

the transmission line pressures and clutches are designed specifically for +4 fluid and the additives package

other stuff doesn't work as well.

Re: Mopar ATF4+
« Reply #14 on: March 23, 2009, 01:41:27 am »

Quote

Dug a bit deeper, here is what I have found.

Chryslers hold on the ATF+ thru ATF+4 patents is real. They created it to fix sifting problems their trannies had in the first place. In 1999 ATF+4 was prefilled in some transmissions in the factory and by 2000 all chrysler transmissions were using ATF+4 except the mini vans.

They also did offer the rebranding and blending to four oil companies back then. Amsoil has applied for the licensing but D/C has denied them and several other companies at every turn. There was a suit filed under the Magnussen Moss Auto Warranty law, but I am uncertain of the outcome of that.

What I can tell you as a fact is that Amsoil Universal ATF outperforms D/C and other licenced ATF+4 oils on every level. Amsoil created their own additives to add to their current Dexron Mercon universal blend ATF to make it compliant.

I can get better info later.. Some of this is hard to research on a Sunday night.

https://www.google.com/search?q=ATF%2B4 ... +vs+amsoil

jws84_02 · **Posted:** Wed Dec 23, 2015 8:14 am

Sounds like normal cold shifts to me. Every auto vehicle I have owned has had "winter" shifting to some extent

transmission acting up again this year in the cold. Last yea

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