Lost coolant and Transmission noises

STEVE M

MEMBER
TOYOTA PICKUP

I have a 94 Toyota 4x4 pickup with a V6 and automatic trans with about 100k miles. Recently, it overheated on my lunch break. I added about a gallon of water to the radiator and made the 30 miles back home with no problems. I can see no evidence of fluid loss under the truck and the exhaust seems normal. I changed the oil which appeared normal and replaced the thermostat and put in new coolant. It seems to be going down slowly. I have noticed that the transmission (I think) is making noises like there is a lot of fluid in it that I had never noticed before. Is it possible that the coolant has made its way into the transmission?

Thursday, November 22nd, 2007 AT 8:46 AM

1 Reply

MERLIN2021

MECHANIC
17,250 POSTS

What you need to look at is if the tranny cooler lines attach to the radiator, or a seperate cooler. If the lines attach to your radiator, check for a milky substance in both the radiator and tranny, that would indicate a crack in the coolr tank. Radiator would need to be replaced, cooling system flushed, and a possible tranny rebuild. If you have an external tranny cooler, the two can't mix! Pressure test cooling system to find the leak. Check tranny fluid for color and level!

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Thursday, November 22nd, 2007 AT 9:12 AM