Question about 1993 Ford F150 SuperCab

1 Answer

1993 f 150, the blower motor for the heat does not have high, only low and med

Posted by on

  • thebird53 Mar 05, 2009

    Turned out to be the fan switch because if i would use a jumper wire the fan would run on high

  • Chuck Martin
    Chuck Martin May 11, 2010

    With or without AC?



1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.


    An expert who has written 50 answers of more than 400 characters.


    An expert who has written 20 answers of more than 400 characters.

  • Expert
  • 95 Answers

These motors use three separate sets of blower motor windings which Low, Medium, and High. The chances are that the selector switch is ok and the High winding or set on the blower motor is not good.

I do not know the color coding of the motor to be able to put 12 volts on one of the windings of the motor to try and force the high to make sure it is actually getting to the motor.

The only way to be certain is to get to the Speed Selector switch and try and find out if 12 volts is being selected to the high side of the switch that goes to the motor. You will have to take the dash apart, which is easier prob. better than replacing the motor which is in the firewall. You might be able to replace it from the engine compartment at a autowrecker, but the high may be a problem Chevy had.
So if you figure out the color of the wire that is the 12 V high, then with the car on and in the high position, apply 12 directly at the motor by exposing part of the wire with a razor blade or a poke through with a sharp tool just to see if it comes on.
Temp solution - Assume the motor is good and the switch may be bad, Remove the medium speed wire and swap it with the High wire and see if it runs on high. Then you will have Low and High ONLY.

There is allot there good luck!


Posted on Mar 02, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya Mechanic 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 repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Ac heat control switch

The item to check is the blower motor resistor.

I found a video from 2000 Neon youtube for reference.

Jan 16, 2014 | 2002 Dodge Neon

1 Answer

I have 2001 E350 van blower works fine but heat only setting is low cant change to med or high

Could be the fan switch or the resistor in the circuit. The resistor controls voltage going to the blower motor. There could also be a restriction in the vents.

Jan 05, 2014 | Cars & Trucks

2 Answers

Blower motor only works on high

your switch is bad more than likely but different settings send power threw the motor different ways so if one way shorts out another sometimes still works also if you have had a different blower motor put in some only have one speed if you just buy the cheapest one

Dec 15, 2010 | 1999 Chevrolet Malibu

2 Answers

Were is the low speed fan control relay located at

There is not one,it has a blower resister that e\includes the low,med.and if there is one a med-high it is a module,and it has multi wires going to it,and is mounted on the blower box near the blower motor.

Jun 08, 2010 | 2005 Chrysler Town & Country

2 Answers

Have a 2003 Jeep Wrangler, Rubicon and the hear/AC blower fan only comes on in the high position. The other setting low, med and med/high the blower will not come on. Is this the controller it self?...

The problem usually stems with the blower motor resistor,high speed by-passes it and there-fore the controller is sending power but the resistor has gone open and the speeds can't be regulated.

Feb 08, 2010 | 2003 Jeep Wrangler

1 Answer

2000 pontiac prix the heat work on high and not low or med

Sounds like a bad blower motor resistor.... is located under the passanger side dash in the blower box near the blower motor itself.... fairly easy job and very common problem. Good luck

Jan 16, 2010 | 2000 Pontiac Grand Prix

2 Answers


It's your blower motor resistor that's shot. I just replaced mine. It cost $40 canadian and I replaced it in 10 minutes. It's located under the glove compartment. Just remove the blower cover (2 push pins) and there it is under the blower.

Jan 03, 2009 | 1998 Plymouth Breeze

Not finding what you are looking for?
1993 Ford F150 SuperCab Logo

84 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts


Level 3 Expert

77169 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22258 Answers


Level 3 Expert

5572 Answers

Are you a Ford Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides