From everything I have read the transmission coolant bypass valve only allows flow to the cooler once the tranny reaches 185 degrees. I guess this is Fords way of heating up the trans quicker so the converter will lockup sooner, saving a bit of gas. But since the transmission fluid runs through the radiator first, couldn't I bypass this valve and get significantly cooler temps? I live in louisiana, hot weather most of the year so no reason to heat up the fluid quicker than my radiator can. Im new to fords, but i know that gm has a transmission temp sensor in the pan that the pcm reads and disengages the tcc solenoid until a predetermined temperature. I've also read that at cold temps od will be disabled also. Doubt I will ever experience that...

I bypassed the radiator altogether on my camaro and just run a huge b&m trans cooler for the past 3 years and many times to the track, no problems. Never seen temps above 175 under severe conditions, with a 3400 stall.

So back to my original question, has anyone bypassed this valve? Or can anyone give me a good reason not to?

Thanks

 

Im bypassing mine right now. I bought the fittings. I'm putting a tee fitting on the hot line and installing the sending unit for my autometer trans temp gauge there. I'm putting a magnefine filter on the return line.