02 f-350 overheating transmission

[hotrod1982]

recently my diesel transmission has started to overheat after driveing a fairly short distance. the temp rises rapidly. so far i have checked the fluid level and tried adding lucas transmission additive with no help. will a transmission flush and new filter help or will that be just wasteing money.

[GAS]

check the bypass valve on the passenger side of the transmission.
It will be closed at start up to warm up fast, then open to flow atf though the cooler.

when you drive it and it reads hot, check the temp of the out let and return lines on the transmission, if they are both cold you have found your problem. A new valve assembly will cost about 45 or 50 bucks, or it can be bypassed with kits sold at various venders.

[hotrod1982]

if it is the bypass valve will that be inside the transmission or will that be an external plug in sensor valve?

[GAS]

it is external. It is the tube that connects the outlet with the inlet of the cooler lines. I will try and post a picture of one in a little while

[hotrod1982]

thank you for the input turns out the culprit is the converter so im lookin at a rebuild job and a new heavy duty converter

[GAS]

well that sux! sorry to hear that.

[forddieseldoctor]

Originally Posted by hotrod1982

thank you for the input turns out the culprit is the converter so im lookin at a rebuild job and a new heavy duty converter

Says who ?