I have a motorhome that has a ford 460 in it with a c6 tranny i checked the shift module pulled the hose off no fluid came out. i but a vacuum on the modulator and it held a vacuum. Could the shift modulator still be bad if not what other things could be wrong? I just finished a dropping the pan and changing the filter. the fluid is clean no metal particules this is a motor home and hasnt been driven much please help thanks
The shift shaft has stuck. The modulater shifts threw all gears so if you pull the hose off and there is no fluid leak then the modulater valve may be good. You could try turning the adjusting screw inside the vachumm hose and if that does not work pull the oil pand and lube all the shift solinoids they may have rusted fron condensation. Use a screw driver to get it to move the shift levers and buy some lucas trasmisson oil and run it in there it will soften the seals. Hope this helps.
When you dropped the pan, it would have been good to drop the valve body. Vehicles the sit for an extended period tend to have the the valve body gaskets driy out and allow internal leakage. This will also give you opportunity to make sure none of the spools are rusted in place or simply bound up. Be careful of the ck balls. They tend to stick and then fall out when you aren't looking. The valve body gasket kit should identify how many and where they are positioned. Looking at both gaskets will help you confirm where it was bypassing. Valve body needs to be torqued to avoid distortion which will bide rhe spools. So get your specs before tearing anything apart. Good luck.
When you dropped the pan, it would have been good to drop the valve body. Vehicles the sit for an extended period tend to have the the valve body gaskets driy out and allow internal leakage. This will also give you opportunity to make sure none of the spools are rusted in place or simply bound up. Be careful of the ck balls. They tend to stick and then fall out when you aren't looking. The valve body gasket kit should identify how many and where they are positioned. Looking at both gaskets will help you confirm where it was bypassing. Valve body needs to be torqued to avoid distortion which will bide rhe spools. So get your specs before tearing anything apart. Good luck.
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