RavenTBK
Full Access Member
A couple months back, the blower decided to take a vacation. Now that its colder, I kinda need more heat than simply driving with the fresh air door open can provide.
Fuse is good. Connection at the fan is clean.
Using http://www.oilburners.net/forums/showthread.php?39256-Heater-blower-problem&highlight=blower+motor <--this thread I did some further testing.
Since the fan speed is varied by the resistor pack through the fan's ground, I tested resistance through the ground wire of the harness side and ground battery terminal.
Ign on fan high 0ohm
ign off fan high 0ohm
ign on fan any other infinite
ign off fan any other infinite
So that tells me the resistor pack is blown, but that still doesnt explain why nothing works, even on high.
Seemingly, I am getting no (+) to the harness side of the blower connector, regardless of ignition, fan, or selector setting. With fuses all good, and such, where should I look next for a resolution?
Thanks. BTW, this is a '90 F350.
Fuse is good. Connection at the fan is clean.
Using http://www.oilburners.net/forums/showthread.php?39256-Heater-blower-problem&highlight=blower+motor <--this thread I did some further testing.
Since the fan speed is varied by the resistor pack through the fan's ground, I tested resistance through the ground wire of the harness side and ground battery terminal.
Ign on fan high 0ohm
ign off fan high 0ohm
ign on fan any other infinite
ign off fan any other infinite
So that tells me the resistor pack is blown, but that still doesnt explain why nothing works, even on high.
Seemingly, I am getting no (+) to the harness side of the blower connector, regardless of ignition, fan, or selector setting. With fuses all good, and such, where should I look next for a resolution?
Thanks. BTW, this is a '90 F350.