Ac blower motor

Switch

YJ car.
the blower is dead. is that it?
does it blow full speed on high
do you have 12v on terminal A of blower , term B is 0v ground
got that, then the blower is dead.
if not 12v, then the controls are bad.
http://www.jeep4x4center.com/knowledge-base/index.htm?utm_source=cj#service

page 47
4 parts to make blow
1: fuse 12 good.
2: switch heater /on off.
3: high, med,low speed, use high, its direct.
4: the blower,
one of those points has no 12v on high,
use a simple voltmeter to find the failed point.

so either the blower motor isn't blowing or its just blowing cold air-always start with fuses-then check for 12v at the blower motor-use a volt ohm meter- if you have 12v then the blower motor is bad-if there is no warm air blowing out-look for the water valve that lets the hot water into the heater core-its on the small hose going back to the heater core-make sure its operating-cheers Denny

haw i fix my rpm meter problem

REPLACE THERMOSTAT.IF ALREADY DONE.CHECK HEATER BLOWER MOTOR SEE IF POWER GOING TO HEATER BLOWER MOTOR.IF YES BLOWER MOTOR BAD.IF NO POWER GOING TO BLOWER MOTOR CHECK AC AND HEATER CONTROL FUSE AND CHECK BLOWER MOTOR FUSE AND RELAY IF ALL IS GOOD CHECK SEE IF POWER GOING TO AC AND HEATER CONTROL SWITCH IF YES THE AC AND HEATER CONTROL SWITCH COULD BE BAD.

sounds like a bad blower motor. fan blades may be detached from the shaft. shorted or bad ground in wiring/switch. check the motor by applying 12v directly to the motor

CHECK BLOWER MOTOR FUSE AND RELAY.IF BOTH GOOD.REMOVE BLOWER MOTOR HOTWIRE IT.IF DONT WORK REPLACE BLOWER MOTOR.IF BLOWER MOTOR WORKS.HEATER AND AC CONTROL SWITCH IS BAD.

There is a blower motor relay,near the motor i think,check it.

check to see if AC and HEATER blower motor is getting power .if yes replace blower motor.if no you have problems in relay- fuse- or ac and heater switch is bad.for sun roof check for power at switch if yes sun roof eletric motor need replace.or sun roof in a bind.if no power to sun roof switch.blowed fuses and bulbs or turn signal switch is bad.

not hard to replace blower motor, could have something fell into the vents? check first before replacing motor