Question about 2003 Ford F150 Regular Cab

1 Answer

2003 Ford F150 Heater fan problem

I have a 2003 ford f150 , the heater fan only works on HI. I was told it is the rheostat. Where is the Rheostat located and how do I get into it. Is it a simple job I can do myself. Thanks!

Posted by on

  • trumpy444 Nov 16, 2009

    Thanks for the info. I found it under the dash beneath the glove box. There were 3 screws holding a cover panel. After removing the panel the resistor was tucked up under the dash next to the fan. There are 2 screws holding it in. Took out screws and dropped it down to take wiring plug off. Picked up new resistor at local Ford dealer($27.22) and had it back in in no time. I used a mirror and trouble light to see under the dash,easier than trying to get up under myself. Thanks again!!



1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Master
  • 2,841 Answers

The problem is the Blower Motor Resistor Pack is defective. Purchase the Pack so you will know what you are looking for. It can be located in a few locations. It can be behind the glove box, behind the kick panel on the passenger side, or next to the blower motor. I am almost certain yours is located behind the glove box but not 100% sure. Hope this helps you.

Posted on Nov 16, 2009

Testimonial: "clay58 good job on the resistor. Right on info. "

  • NOT ME Nov 16, 2009

    No problem I thought it was behind the glove box. So very glad I was of help. I would appreciate 4 thumbs up from you on my answer.



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

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this 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.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

I have a 2003 Ford F-150 FX4 5.4 and the AC only blows out of the defrost and help

Dustin, Sound like vacuum loss to position switch. Defrost is the default position when vacuum is lost in vent control system. Check any and all vacuum lines and connections under hood first, especially any that run through firewall. Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
2001 F150 V6 4 2 AC Heat Stuck In Defrost Easy Repair

Heating Vent Control Issue Page 2 Ford F150 Forum

2003 150 heater auto climate control Defrost Only Ford F150 Forum

Fixed the EATC defrost only Ford F150 Forum Community of Ford Truck Fans

Apr 13, 2016 | Ford Cars & Trucks

1 Answer

Low speed heater or ac fan doesn't work

There is a multi-speed rheostat located under the dash, it goes into the heater box. You can purchase at O'reilleys and install in about 20 minutes.

Aug 06, 2014 | 2006 Ford Taurus

1 Answer

2011 ford escape heater will not work on lower settings

That sounds like the heater motor rheostat is faulty, it's usually situated on the heater housing close to the blower motor

Oct 27, 2013 | Cars & Trucks

2 Answers

Heater fan isn't working in my 1997 ford f150 extended cab 4x4

What have you checked so far ?
Fuse - resistor - power at the blower motor ?

Feb 13, 2013 | 1997 Ford F150 Regular Cab

1 Answer

2003 Ford F150 Regular Cab passenger side floor board wet at time

prob. the heater core located under the dash the lines go thru the firewall to the engine. on a '98 you gotta take alot of stuff off to get to it air bag, dash etc. alot of time but the parts arent too much $$

Feb 04, 2010 | 2003 Ford F150 Regular Cab

2 Answers

2003 f150 heater core is leaking . I need amanual so I CAN MAKE SURE I'M TAKING THE DASH APART THE RIGHT WAY.

Go to Auto Zone or O'Rieley's auto parts and purchase the Haynes manual for your year, make and model. Haynes usually has a better section on the dash and heater disassembly process.

Sep 23, 2009 | 2004 Ford F150

1 Answer

Heater valve is not getting any vacuum

Try removing the vacuum hose at the back of the vacuum pump start the engine and see if you can feel it pulling a vacuum it should **** you're finger in a bit or if you have a vacuum gage hook that up and see what it readsshould be at least 12-15 in vacuum. Also is the heat stuck in defrost mode ?

Jan 04, 2009 | 2003 Ford F350 Super Duty DRW SuperCab

Not finding what you are looking for?
2003 Ford F150 Regular Cab Logo

1,600 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts


Level 3 Expert

79865 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers


Level 3 Expert

5687 Answers

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

Answer questions

Manuals & User Guides