JSTCYR

If a coolant line has been blocked would this have caused my transmission failure. I ask because I will install a larger aftermarket one when the new transmission comes in.

gondar

That would be five minutes of driving. The trans would be locked in top gear, presumably. I don't think there would be a lot of heat generated.

Disconnect the return line, see if you have fluid flow at idle for a second or two. (Hose or plastic bag.)

Oversize coolers can cause their own problems in cold weather.

I'm not sure of the implications of a totally blocked cooler, though. Is there a relief valve somewhere?

tozoM8

Take the lines off and blow trough with compressed air slowly. The tranny can overheat in less than a minute without the cooler working properly. It belched all the fluid out on the top breather. You will need a new/rebuilt torque converter and probably a few clutches. The extra pressure popped a few seals too.

tozoM8

You've got mail.

tozoM8

I sent it again.