I have a problem on my car the fan switch only operates on a couple of speeds can anyone help with this issue ???
Good mornin! That would most likely be the blower resistor, located in the air book rhs under dash, 3 wire plug to it.
Check the fan relay on the firewall. Mine was burnt up and the wiring to when we bought the 70 in 88.
Resistor had 2 types in 1971. early had the last 3 digits of the part number on terminal side part #9791201 late design had the letter "C" on the terminal side. part #487089
Yes, I would check the blower relay as well. https://www.autozone.com/cooling-he...relay&fromString=search&isIgnoreVehicle=false