you might have to check with the manufacturer for schematic for this. the bypass could be built into the assembly where your hoses go or it is internal in the pump assembly. I can't answer that. The shifting mechanism might be sticky,atf will get that way, when exposed to air and fine dirt. Maybe get some Lucas or some other brand atf oil treatment and add a little to the res. run in and out to get it into the shifting valve. Or drain it and replace the oil in the reservoir. If they work separately okay, I would look at the fluid itself
|