With key Tell me your low speed relay clicks if you jump black to brown wire in Low Speed wire connector at radiator thermal switch and also if you jumper same color wires at a/c receiver trinary switch.My low speed isn't coming on. I've got a new switch. I just need time to put it in along with the motor operated ball valve I got.
Have you gone through Steve's trouble shooting guide?
When I had my "fan not running" problem it turned out to be the power connector right at the fan. It had overheated and partially melted the plug. I suspect the reason was due to bad bearing, I could hear them grinding when I spun the fan by hand. Bearing is fairly easy to replace if you have that problem. I couldn't find a new connector so I just hard wired right to the fan and clamped new wires to support then used a generic male and female connector for a disconnect point at the base.
When troubleshooting you can bypass all of the switches and verify that fan does run when given power.
Thanks for sharing Jeff, do you know how hard it was for your mechanic to install?
Anecdotally, I have an a replacement tank and it isn't very great.I recall some recent discussions about the replacement tanks being sold not being as robust as the originals. Despite the confined space I think it would be possible to fit an aftermarket tank from Jeggs or Summit if it came the point of them just being completely NLA.