Question about 1997 Chevrolet Astro
You could just have a blown fuse but the fuse blew for a reason.
There are a few possiblities, I'll try to list them in the most likely order;
1) blower motor speed control resistors.
2) blower control switch
3) blower motor
The blower motor and speed control resistors are usually accessable from under the hood. Once you find the blower motor follow the wire that leaves the motor to where it plugs into the fire wall. This is the speed control resistor assembly. unplug the wires and remove the 2-3 screws that mount it to the fire wall. When you get it out you will find 2-4 wire coils on the back, these are the control resistors. If they are burnt or broken you need to replace them. If they look fine you need to test them with a Ohm meter or continuity tester. If they test good (having continuity) then you need to test the blower motor.
To test the blower motor, you'll need a jumper wire or an amp meter and test leads long enough to reach the battery from the plug in for the resistors. Plug the resistor assembly back into the fan plug. Fasten alligator clips to your jumer wire or use your test leads from the amp meter. Fasten your alligator clip to one end of the resistor assembly then touch the other end to the battery and listen for the blower motor to start. If it doen't start your problem is the blower motor. If it does start then your problem is most likely your fan control switch. Given the complexity of changing the switch and the many differences from vehicle to vehicle I can't tell you how to do that and I recommend you have a professional do it.
Posted on Jun 07, 2010
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
May 02, 2016 | 2006 Dodge Grand Caravan
Nov 24, 2013 | Land Rover Range Rover Cars & Trucks
Oct 24, 2013 | Jeep Liberty Cars & Trucks
Sep 16, 2013 | 2008 Mercury Grand Marquis
Aug 14, 2012 | 1998 Ford Windstar
Aug 04, 2012 | 2010 Mercury Milan
Oct 26, 2010 | 2000 Jeep Grand Cherokee
Jan 13, 2010 | 2004 Chrysler Pacifica
Dec 24, 2009 | 1994 Subaru Loyale
245 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: