How does a high speed fan work on a S-10?

Only when the fan speed switch is set to the highest setting the blower motor relay is pulled in. A separate +12v source then flows through this relay and supplies voltage to the blower motor. This separate +12v source is fed from a 30amp (green) green fuse in the ‘Underhood Fuse Block’.

What does it mean when your blower fan is not working?

It sure sounds like the relay has stuck open. If the blower doesn’t work after you tap on it, then it’s probably not closing to send the signal to the resistors. Which fan speed you choose determines which resistor gets “used” by the voltage coming from the relay.

Why is my high speed fan not working?

Sometimes my high fan speed starts working if I pound my fist on the dash, but it usually stops the next time I go over a bump. Oh, well. Samething here eyeofthetiger. It comes on at odd times and not when you wan it to come on, im thinking its a bad ground or short in the wire. Myabe a factory issue? You know I had a similar issue.

How many pins are on a blower fan?

3-There’s 5 pins on the relay, so red is B+, purple goes from relay to motor, black is ground (?), and that leaves 2 more wires that I assume go to the resistor?

What to do if your Chevy S-10 blower does not run?

The other 2 does fine. 1993 chevy s-10 2wd truck, no heat nor a/c, compressor does not run regardless of switch position. This has happened to me as well. The fix is a simple $18-$25 part, the Resistor Block, which is located inside the back Firewall adjacent to the Blower Motor Housing. Two (2) screws and it pops right out.

How does a Chevy S-10 heater fan work?

Please upload the truck’s scematic if you can. power distribution center should provide power to the fuse panel, then after the fuse panel it should goto the blower speed switch, then to the other components. The ground side should get its ground provision thru the 3 legs of the blower resistor.

What causes blower motor to quit working on Blazer?

On my 97 Blazer, the blower motor will suddenly quit working while the anti-lock brake light will simultaniously light and the cruise will switch off. A half hour later, all three will switch back on.

Why does my air conditioner blower not work?

We’ve got a little extra weirdness going on in this one ’92 s10. The blower will work, but only after tapping on the resistor/relay/fan speed switch. Changing the fan speed or turning the blower on or off will cause it to fail again until you give the relay another good tap or two.

What kind of fan does a work truck use?

Help! our 2006 chevy work truck was doing that and it was the plug/wires from the motor to the control. for that truck it was a service bulletin. they gave us a new plug with heavier wires and connectors and now it works. but ours was a plug inside the truck to the heater box. didn’t even have to take anything off the dash to fix.

How does a high speed blower motor work?

In the highest fan speed state, the blower resistor is bypassed completely and the fan is effectively connected directly to the car’s battery, allowing maximum current to be supplied to the blower motor.

Is there a dial switch for a fan?

A minimal switch that uses a dial knob to make the process of control a fan’s speed easier. A minimal switch that uses a dial knob to make the process of control a fan’s speed easier. .

How are relays used to switch fan speeds?

Relays are not used to switch fan speeds, a resistor block is. Plus there are NO electronic commuted motors in a automotive application. This vehicle uses a resistor block to switch fan speeds. No relays involved in the lower speed circuit.

Why does my AC fan only work on high?

If your speed selector for your AC or Heat only works on high, or low, or if its missing any particular speed, this video will show you how to fix it once and for all. This is a fix for 2nd generation Dodge Rams (1994-2001-2002 2500/3500) Loading…