2008 Dodge Nitro A/C only blows High speed and warm air. Speed sounds like the Blower Motor Resistor, but would that cause warm air?

means heat on high blower fails too, not told
the blower must not fail on all speed settings
does it or not?

94 CHEVY Silverado ????,heat/ac fan not blowing. K1500?????? Hear clicking when selecting l'm, SET high but not blowing! WITH AIR OR NO A/C? FIRST IS FUSES, MAKE SURE THE BLOWER FUSE IS NOT BLOWN.
EASY NO? CHECK ALL FUSES FIRST. ON ALL ELECTRICS FAILING OF ANY KIND.
BAD FUSE, BAD WIRINIG , BAD CONNECTIONS. OR EVEN BAD RELAYS TO THE BLOWER OR BAD SWITCH BLOW.
THE OLD CARS , HAD A SPEED BLOW , RESISTOR BLOCK
THAT FAILS ON ALL SPEEDS BUT HIGH, SO ITS NOT THAT.
OWN A VOLT METER????
HERE IT IS, ANY OF THIS CAN FAIL THIS OLD
WE USES A VOLTMETER TO FIND THE POINT OF FAILURE.
A SHORTED BLOWER MOTOR CAN BLOW LEFT SIDE TOP
FUSABLE LINK.RIGHT FUSE BLOWN MAKES THE CONTROLLER DEAD.

Blower motor speed reducing dropper resistor gets hot in normal use and it is generally positioned in the heater air intake to aid with cooling - without adequate cooling there is a danger of fire.

If the blower motor has shorted internal wiring or tight semi-seized bearings the motor will consume more current and cause the resistor to become even hotter, possibly causing it to fail.

The screaming noise is typical of a motor bearing trouble...

Sounds like high blower relay is bad

check for bad connection on wiring, turn blower on high and wiggle wiring under dash around blower motor and resistor area

The blower fan only working on high is caused by only one thing, that is a defective blower motor speed control resistor, the resistor is located next to the blower motor in the air ducting, replace it and the problem is solved.

this is caused by a defective blower speed control resistor, the resistor is located next to the blower motor in the air duct.

this problem is caused by the blower motor speed control resistor, it is located near the blower motor, the resistor end goes into the air duct for cooling, replace this p[art and the problem will be solved. See pitcure below, the part is about $13

Sounds like tou need to replace blower motor resistor, it is located on A/C, heater case near motor. This should fix you right up. Have a good one!

Check the blower resistor for burned or damaged coils.