transmission fluid in radiator | Ford Explorer - Ford Ranger Forums - Serious Explorations

  • Register Today It's free! This box and some ads will disappear once registered!

transmission fluid in radiator

garris47

Member
Joined
December 12, 2011
Messages
11
Reaction score
0
City, State
St. louis MO
Year, Model & Trim Level
2000 Ford Explorer Limite
I tried looking for some information on other posts but nothing for sure.

I replaced my thermostat about a month ago coolant seemed fin. This weekend my heater started blowing out cold. Coolant was low so I filled it up but the heater was still not hot. So I switched the hoses to the heater core and then it was hot. The cap was leaking so I replaced that. The coolant now looks horribly dirty brown and tranny fluid is very low. I only noticed that after it started not wanting to drive when in reverse at first, but then drive was bad also. I had to give it allot of gas just to barely move.

My conclusion is that tranny fluid is getting into my radiator and clogged the heater core. I had planned on getting a new radiator and flushing the cooling system.

Do I need to also flush that tranny fluid and replace the filter, could water have gotten into the transmission? Any other thoughts or comments on this would be much appreciated.

Michael
 
<

Join the Elite Explorers $20 Gets rid of the ads!

Elite Explorer members see no advertisements, no banner ads, no double underlined links, can add their own profile photo, upload photo attachments in all forums, and Media Gallery, create and save more private conversations, and more. Join Today. Your support is greatly appreciated.




ragajungle

Explorer Addict
Joined
November 8, 2008
Messages
1,023
Reaction score
2
City, State
Chicago, IL
Year, Model & Trim Level
89 BroncoII & 05 Taurus
if you switched the flow of the coolant into the heater core you basically unearthed all the crap and sludge typically built up in a heater core into the coolant system. the brownish clumps and coolant color are typical of 2 situations

1) worn rad or heater core

2)exhaust gasses from a slow head gasket or intake manifold gasket leak causing the coolant to become oxidized
 
<



ragajungle

Explorer Addict
Joined
November 8, 2008
Messages
1,023
Reaction score
2
City, State
Chicago, IL
Year, Model & Trim Level
89 BroncoII & 05 Taurus
forgot to add: if there was trans fluid in the coolant system your transmission fluid would definitely have coolant in it (as the coolant system runs at a much greater pressure)
 
<



garris47

Member
Joined
December 12, 2011
Messages
11
Reaction score
0
City, State
St. louis MO
Year, Model & Trim Level
2000 Ford Explorer Limite
I just wanted to see if the heater core was clogged or not. If there was sludge in the heater core the entire system had sludge and needed flushed any I thought.

I have not had any puddles of fluid under the truck at all. The transmission fluid level was fine every other time I checked it. Where could it have gone? Also why would it not show over full if there was added water in it?
 
<



celsoglima

Member
Joined
September 29, 2008
Messages
35
Reaction score
0
Location
South MS
City, State
Hattiesburg, MS
Year, Model & Trim Level
00 XLT 3.0L
I would get that transmission fluid checked to make sure you didn't get coolant in it. If that fluid is contaminated your transmission can get damaged.

A friend of mine had a similar issue with a toyota tundra. In his truck the cooling line for the transmission fluid ran along the radiator cooling lines. I don't recall the explanation he gave me. The transmission line cracked and transmission fluid got into the radiator. The radiator had to be replaced and all the contaminated fluids flushed not just replaced.
 
<



budwich

Explorer Addict
Joined
May 4, 2005
Messages
3,245
Reaction score
4
City, State
Ottawa, Ont
Year, Model & Trim Level
96 XL
what color is your tranny fluid? When water based fluids get in there, you WILL see a color change. That's the clue. IF coolant gets in there, you need to get the tranny fluid completely flushed otherwise its will "eat" the tranny... :-(
 
<



Torqueranger

Well-Known Member
Joined
January 13, 2012
Messages
309
Reaction score
1
Year, Model & Trim Level
99 ford explorer 5.0l
what color is your tranny fluid? When water based fluids get in there, you WILL see a color change. That's the clue. IF coolant gets in there, you need to get the tranny fluid completely flushed otherwise its will "eat" the tranny... :-(

+1 keep tabs on tranny
My sister had a vw jetta and coolant got into the tranny and wound up killing the tranny and from there your up shits creek..

Oh If you have coolant in the tranny and then please take it to a shop to have them flush the whole system because unless you have the system to do this than you are wasting time and money... When changing the fluid in a trans you can never get all of the fluid out unless you take the tranny apart or flush it..
 
<



garris47

Member
Joined
December 12, 2011
Messages
11
Reaction score
0
City, State
St. louis MO
Year, Model & Trim Level
2000 Ford Explorer Limite
The tranny fluid looks normal. Although there is not much left in there. Going to install a new radiator and flush all the fluids.

Thanks everyone!
 
<



joesilvia92

Member
Joined
August 30, 2010
Messages
38
Reaction score
0
City, State
Bristol RI
Year, Model & Trim Level
'96 XLT
I tried looking for some information on other posts but nothing for sure.

I replaced my thermostat about a month ago coolant seemed fin. This weekend my heater started blowing out cold. Coolant was low so I filled it up but the heater was still not hot. So I switched the hoses to the heater core and then it was hot. The cap was leaking so I replaced that. The coolant now looks horribly dirty brown and tranny fluid is very low. I only noticed that after it started not wanting to drive when in reverse at first, but then drive was bad also. I had to give it allot of gas just to barely move.

My conclusion is that tranny fluid is getting into my radiator and clogged the heater core. I had planned on getting a new radiator and flushing the cooling system.

Do I need to also flush that tranny fluid and replace the filter, could water have gotten into the transmission? Any other thoughts or comments on this would be much appreciated.

Michael

the radiators on the xs have the tranny cooler built in to the sides. i had the same problem. the radiator cracked and the trans fluid started seeping in.
id say check the radiator and after that get your trans fluid checked as said in thread cause the coolant can cause issues.
 
<



Top