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1981 corvette blower motor getting no powere has power at fuse block but no where else blower motor runs with jumper wire

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Check the blower speed control resistor pack, it is located in the air stream near the blower motor, that is most likely the cause of the inop blower, but be warned if the blower is drawing to much current due to wear the resistor will fail again, I believe the connector has four wires, 2 are heavy Gage

Posted on Jul 29, 2008

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Why after changing the starter in my 81 corvette does the blower motor and wipers not work? there is power to both


you should have two power wires coming off the starter one to the battery and one to the alternator make sure you hooked them both back up

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Blower motor 2009 saturn vue doesn't come on, fuse is good, what next?


DISCONNECT THE BLOWER MOTOR POWER LEAD. RUN A "FUSED" (20AMP) HOT JUMPER WIRE TO POSITIVE SIDE OF CONNECTOR,THEN TO BATTERY POSITIVE, THEN RUN A NEG. WIRE BACK TO NEG. AT BATTERY (TO INSURE A FULL CIRCUIT).
IF BLOWER WORKS...YOU HAVE A SWITCH,WIRING, OR FUSE/CIRCUIT BREAKER PROBLEM.NEXT CHECK FOR POWER INTO BUT NOT OUT OF SWITCH...IF THIS IS THE CASE THE SWITCH IS THE PROBLEM.

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Air and heat blower will not come on. 1998 sonoma 2.2l


start by checking fuse. if fuse is good, aquire a test light, check the test light on the battery to make sure the test light works. Power to ground = light. access blower motor under pass-side dash panel.(probablly have to remove underdash cover, secured with pop-in style fasteners.) locate blower motor. 2 wires w/connector Purple-power, black-ground. check for power at purple w/test light on known good ground, with ign on, and blower switch on high. if it has power, hook clip of test light to a power source, ( + on battery w a jumper wire) and probe black wire, with test light. if no light, jumper that wire to a good ground. if it lights, you have a bad b-motor. if no light on power side of blower motor, and fuse is good, check power to swith. blower circuit may have 2 fuses. 1 for high and a 2nd for the lower speeds. if switch has power to it, and power is transfered to another wire when switched, suspect the blower motor resistor. James White, White Automotive, Hopkins Mo. ASE tech, 17 yrs exp.

Feb 06, 2013 | 1998 GMC Sonoma

1 Answer

I have replace the blower switch pigtail rerister still no blower working could it be the relay if it is where is it ? the blower motor and relay are the only two things left to change need help thanks


Do you have power to the blower motor?

With everything connected there should be power on both wires going to the blower motor. If there is no power than remove the blower motor relay in the fuse block under the hood. There should be power at two of the pins and two of the pins should be grounded. One pin is powered by the 50 amp Blower fuse and the other gets its power from the function selector (the switch that controls where the air comes out.

If only one pin has power than pull the 50amp blower fuse If power goes away than you know that the relay is not recieving power from the function selector. That is powered by a 15 amp fuse in the cetral fuse block (under the dash i think). If that fuse is good than check for power at the pink with black wire at the function switch. If there is power there tan check for power at the yellow with red wire and the function switch. If there is no power than you have a bad function switch.

This is a ground side controlled blower motor. The speed switch controls the path to ground. so if there is power to the blower motor on the orange with red wire you can ground the orange with black wire at the blower motor and it should run.

That should be enough info to get you started. Let me know what you find and I'll be happy to help further.

Feb 08, 2011 | 2001 Ford Econoline

1 Answer

Blower motor works resistor is not burnt and i have power just will not turn on? can i cut the ground and put a new ground in so it just runs on high?


With everything plugged in and the ignition key turned turn to run position or with the engine running ground the yellow wire at the blower resistor with a jumper wire. If the blower doesn't work ground the purple wire on the resistor. If the blower works than the resistor is bad.

If the blower works when the yellow wire is grounded turn the speed switch to lo. Pull the HVAC blower relay in the instrument panel fuse block. Two of the pins should have power and two pins should have ground. If you only have power on one pin than the switch is possible bad in the HVAC controller. If there is power on two pins and two pins are grounded try swapping the relay.

Jan 14, 2011 | 2005 Chevrolet Equinox

1 Answer

Blower motor will not run.


check all ur fuses as a first step, should be under the drivers side of dash, usually the most common fault, if not check for power at the unit itself

Jul 01, 2010 | 1981 Chevrolet Corvette

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Have you checked for any blown fusible links & fuses under hood?

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My 81' vet


The windows are electric. They have electric motors that raise, or lower, the window up and down. Power to the electric motors comes from the window switches. One window switch for each door window. Power to the window switches comes from the fuse panel.

First thing to do, is to check the fuse in the fuse panel, for the windows. If you do not know which fuse it is, and it is not marked on your fuse panel cover anymore, I invite you to go to your nearest auto parts store, and buy a manual of your Corvette.

The next thing to do is to remove the window switch that corresponds to the window that doesn't work. Turn the ignition switch to On, and use a multimeter to test it. Set the multimeter to DC volts, and the 50 volt scale.
If you don't have a multimeter, I invite you to buy a cheap one. They're usually about $12 dollars.

Find a non-painted surface for a good ground. The Black probe lead is the Ground lead. (Negative) I usually try to find a clean, non-painted surface, that I can wedge the tip of the Negative probe lead into. Frees up your hands.

Use the Red (Positive) probe lead, and touch it to one of the terminals of the window switch. One of those terminals should be 'Hot'.

If not, you are not getting power to the window switch. Your problem goes towards the fuse panel.

If so, your window switch is bad.

Fuses and window switches, are two of the most common problems.

If you aren't getting power, it could be that a wire has the insulation rubbed through, and is shorting out. Or it could be that fuse.

If you are getting power to the window switch, then it may be a wire to the window motor that is bad. Or it could be the window motor itself.
After 28 years, your window motors have seen a lot of usage. Also the door seals shrink for the windows, and this allows rain, or snow to make it's way into the door. Right down to the window motor. If you are a Corvette owner that always keeps their Corvette garaged, and NEVER takes it out in the rain, don't be hatin' me! lol!
Obviously a rusted window motor is not your problem!

It may be that the Ground wire to the window motor, has developed corrosion on it's terminal end.
(Isn't wiring Fun? (!)

You can test the window motor, by using a jumper wire connected to a good ground, and alligator clipped to the Ground terminal of the window motor. Then use a Hot jumper wire, and touch the Positive terminal of the window motor. You will see a spark when touching. Just wanted to warn you. Don't be standing in water as you do this test!

Sep 04, 2008 | 1981 Chevrolet Corvette

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