Jeep Garage  - Jeep Forum

Jeep Garage - Jeep Forum (http://www.jeepgarage.org/forums.php)
-   Troubleshooting/Problems (http://www.jeepgarage.org/f203/)
-   -   Transmission oil has bubbles on the dipstick (http://www.jeepgarage.org/f203/transmission-oil-has-bubbles-on-the-dipstick-40784.html)

violant00 04-15-2012 04:58 PM

Transmission oil has bubbles on the dipstick
 
Jeep started to over heat randomly and then NOT overheat for whatever reason. When i finally got home(after blasting the heat in 80deg weather) i checked under the hood and the fan was working the resevoir was not bubbling. When i checked the trans oil dipstick there was A LOT of bubbling on it. Anybody has any ideas and what this could be or is my transmission overheating ?

Frango100 04-15-2012 10:05 PM

Re: Transmission oil has bubbles on the dipstick
 
When you say that its overheating, how high is the coolant temperature then?
Did you check the tranny fluid level? If its too high, the moving parts can mix air in the fluid and cause the small bubbles to appear on the dipstick. I think that if the tranny fluid gets too hot, you will get the transmission overheat light on.
The cooling fan will also be on when the airco is switched on, so this is not a direct indication of engine temperature too high.
Does the tranny shift normally, or does it react different then before?

violant00 04-15-2012 11:32 PM

Re: Transmission oil has bubbles on the dipstick
 
Tranny was definitely shifting wierd the engine temp went all the way to 230 not all the way. Trans temp light never came on. I also checked the coolant and i saw a lot of particles in there.... may be time for a flush

GreenWithEnvy801 04-16-2012 12:30 AM

Re: Transmission oil has bubbles on the dipstick
 
The Trans could be low on fluid. Had the same issue with mime after I changed my pan gasket and filter. make sure you check your tranny fluid running and while in neutral. If the level goes up and down over several checks it usually means it low from my experience

violant00 04-16-2012 10:59 AM

Also I changed my radiator and water pump a while back I know for a fact I do not have the right mixture amount of coolant and water. Its more water then coolant, could this be why it started to overheat now that the weather is getting hotter?

Sent from my DROID X2 using Tapatalk

TJXJWJ 04-16-2012 11:22 AM

Re: Transmission oil has bubbles on the dipstick
 
It should be at least 50-50 antifreeze and DISTILLED water you BUY FROM THE STORE. I would flush it and then add the right mixture ASAP. I'm not sure if your's takes the pink stuff or not, but I know mine does. Make sure you're using the right coolant. It's NOT cheap stuff. I got mine at Napa. Zerex G-05 Antifreeze.

JeepMe 04-16-2012 01:59 PM

Re: Transmission oil has bubbles on the dipstick
 
Quote:

Originally Posted by TJXJWJ (Post 613787)
It should be at least 50-50 antifreeze and DISTILLED water you BUY FROM THE STORE. I would flush it and then add the right mixture ASAP. I'm not sure if your's takes the pink stuff or not, but I know mine does. Make sure you're using the right coolant. It's NOT cheap stuff. I got mine at Napa. Zerex G-05 Antifreeze.

The stuff for the 4.0L is pretty cheap stuff. It's the standard Dex-cool antifreeze (most people say it's orange, but I think it's the same as you're talking about). It's about $15 for a gallon of the stuff (and that gets dilluted to 2 gallons). The whole system takes 3.75 gallons (including 1 qt for the overflow tank), so $30 will do the whole system. I've heard that the 4.7 has special antifreeze that should be used due to the different material of the block and heads.

I've flushed a lot of systems and always used regular sink water without any issues.

I also wouldn't imagine that not having a 50/50 mixture of antifreeze would cause it to overheat like that. I've duct tapes a radiator hose and filled it w/ water to drive home w/out having overheating issues. I doubt not having a perfect mixture will cause it to overheat.

2005JGC 04-17-2012 12:04 AM

Re: Transmission oil has bubbles on the dipstick
 
Its dependant on where your from as far as what to mix with your coolant, Here in the pac nw we have some fresh clean soft water that does just fine... go inland though and you get water full of minerals and schtuff and its better to go distilled.

Frango100 04-17-2012 06:55 AM

Re: Transmission oil has bubbles on the dipstick
 
Take care in not using the right coolant mixture. Water in itself is one of the best cooling liquids there is, but the downside is that it causes corrosion of the metal parts inside the cooling system. For that reason they added corrosion inhibitors to the coolant, but that will only work well when used in the right mixture with distilled water. You could use just tap water, but the minerals in the water can/will settle on the hotter parts of the engine (cylinder wall jackets and heads) and form a thin layer, which will lower the heat exchange possibility and can increase the temperature locally.
Particles in the liquid can block the small passages in the radiator and reduce the cooling capacity.

01grand 04-17-2012 09:45 AM

Re: Transmission oil has bubbles on the dipstick
 
Or you can always be lazy like me, 4 gallons of Zerex G-05 50/50 premix cost only a few bucks more than buying distilled water and 2 gallons of full strength.

The transmission uses the radiator as a cooler, so a high transmission temp could start to overheat the coolant which would cause engine temp to go up as well. If you have lots of bubbling/foaming in your transmission oil I would get this checked out asap.


All times are GMT -5. The time now is 02:08 PM.

Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright 2012 - JeepGarage.Org
The Jeep Grand Cherokee Owners Community