I have a 1994 Astro van an have an issue with "no high speed fan" all other's function. My relay does work when I select high speed at the fan switch on climate control. But, the 12 v that is supposed to be transferred to the blower motor is present, but, it apparently lacks the current to...

I have a 1994 AWD Astro Van. Inside of my climate control the main vacuum fed comes through the fire wall and splits off to two sides of the climate control. The left side and the back side (six rotary vac lines). The left side attaches to a plug (with two lines connected), which is a plunger switch...

NO CHASSIS/BATTERY GROUND ON BLOWER MOTOR? I have a 1994 Astro van with no high speed fan operation, all other speeds work. I've noticed that the ground lug (and blower case) are not electrically connected to chassis ground (battery ground). The blower motor's case appears to be isolated from the ch...

BLOWER RESISTOR HAS NOTHING TO DO WITH HIGH SPEED FAN OPERATION! If you look at a schematic you will notice that when you have the fan speed set to "high, " 12 volts is supplied to the high "a/c blower relay", which (after the contacts close) sends 12 volts directly to the blower...