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Trans Cooler Bypass Valve Help
I read somewhere a while back that to check to see if the bypass is working correctly you just dissconnect the hot (supply side) of the lines where they enter into the cooler. Then you run the truck for a few seconds to make sure that fluid is flowing thru the hot supply line and that no fluid flows backwards from the return (cooled fluid side).
So today, I drove the truck around until the trans warmed up to about 150 degrees. I tried this test and I had major flow from both sides. If I understand this correctly I need to replace my Cooler Bypass Valve. Can someone please tell me if I am doing this correct?
If I do need to replace it, do I have to drain all the fluid first?
2001 Ford F350 Lariat Crew Cab Long Bed
7.3 PowerStroke Diesel
285 75 16 Goodyear Wrangler Silent Armor Pro E
4" Turbo back exhaust w/flow thru muffler
EGT Temp./Trans. Temp./Boost gauges
Air Lift air bags