has anyone had their radiator leaking into you tranny causing a pressure drop so your tranny wouldnt shift. if so what have you done to fix the problem and how do you know for sure that thats the problem?

 

What???


I do not know of anyway for coolant to get into your tranny. If it is I would have to assume you poured in through the dipstick or you hooked up a tranny cooler assbackwards.

 

I was going to say trany cooler setup wrong or something else cause that's about the only way coolant could get in the trany. Unless of course llike stryker said you poured it in which I would assume you wouldn't do..

 

some vehicle, actually most, have the tranny coolant go to a small cooler plate inside of the radiator. I am not sure if an XJ has that setup as mine has it's own radiator in the front. But you all should know what I am talking about, the tranny has two lines that goto one side of the radiator and it cools the fluid down as it passes through a plate inside of the radiator. but like I said I don't know if XJ's have that setup.

 

if your getting coolant in the trans then you definatly have a cooler leaking. (part of the rad) trans pressure will overpower the cooling system when its running. when you shut it off, you will have pressure in the rad that will find its way to the trans through your leak. only way to fix is to change the rad.

 

On the same theory, while running the higher trans line pressure would force ATF into the cooling system via the suspected leak in the radiator end tank tranny cooler wouldn't it? You should see some evidence of trans fluid in the radiator, wouldn't you?

 

Had a 72 chevy that the trans cooler was built into the radiator... lines from the tranny went in one on both sides... the radiator leaked internally and i got coolant all in the radiator... i had just installed my rebuilt transmission and 10 miles later the linkage came apart internally.. had to drop it again and take it up there... they said not only that but i had coolant in the transmission already and needed all new gaskets again since it eats them away... cost be more again and i had to get a new radiator... sucked

 

My tranny cooler sits in front of the radiator at no point is there a chance tranny fluid and coolant can get mixed up. There is no coolant going to the tranny cooler . THe only fluid that goes through a tranny cooler is tranny fluid!

 

yeah thats your XJ... his may be different... mine may be different... hes looking for answers... im giving possibilities...

 

If his in the rad. cooler has a leak, he should bypass it and run an aux cooler instead. Then pressure test the rad to see if it was affected. My '97 ZJ has an in-the-radiator cooler in series with a factory aux.cooler mounted in front of the radiator. There is a safety valve in-line that bypasses the aux. cooler should it develop a leak.

 

ok yah thats alot of good suggestions but the thing about it that is making it seem that it has a leak is that the coolant res has a red fluid on the outside (near the inlet) of it that looks like radiator fluid and after I just changed the fluid the new fluid is already looking to have a brown color in it plus the dip stick has some rust on it.

 

and th evidence i found is no the res. bottle it has fluid that looks like tranny fluid all over it (by the inlet) and well i am thinking that what it is rather praying cause bieng in hawaii finding the rad. is no problem but a tranny thats a different story all together.

 

Do you have any enemies that might have tampered with your vehicle?

 

haha not that i know of i mean i live on the marine corps base out here so idk but i did buy it for 350 dollars and well when i bought it it looked like someone dropped it (stock) into a mud pit and left it the so the passenger side was covered in mud inside and out but i serviced my tranny and changed the filter to no prevail so i came to that conclusion due to the recent red fluid on the res bottle

 

uuhh... there is a coolant that is red... but its not suppose to be in your jeep... its a GM coolant and its baddd... itll blow a head gasket quick fast in a hurry... would take it and have them do a complete running flush... and make sure they use the green stuff... also you cant mix the two... thats bad jew jew also... i thought you had coolant in the transmission... not tranny fluid in the radiator...