I'm freezing!!

Reply Subscribe

Thread Tools

Search this Thread

Feb 26, 2003 | 12:57 PM

oft

Thread Starter

Elder User

Joined: Aug 2000

Posts: 597

Likes: 0

From: Burke VA

I'm freezing!!

my heater stopped working . Of course this could not happened in June it has to happen in February. When I'm going fast I get heat but no fan. I thought it was a power problem but I noticed the fan would kick on sometimes under hard acceleration. FYI, the truck has air conditioning (not hooked up).

Thanks
Jayson
78 F100

Feb 26, 2003 | 01:04 PM

okiebronco

Senior User

Joined: Oct 2002

Posts: 368

Likes: 0

From: del city,oklahoma

I'm freezing!!

my friends did something similar.turned out it was just the ignition switch tho. it wasnt the acceleration that actually did it in his case. altho it seemed like it. it was actually the bumps in the road that jarred the truck. once he changed the ingition switch. it never did it again for the 2 years its been on the road

Feb 26, 2003 | 01:16 PM

Crowbar65

Senior User

Joined: Sep 2002

Posts: 157

Likes: 0

From: San Antonio

I'm freezing!!

Could also be the fan chassis ground, as stated above, makes good contact when the truck gets a good bumping and turns on.
Had it happen to me.

Feb 26, 2003 | 02:02 PM

oft

Thread Starter

Elder User

Joined: Aug 2000

Posts: 597

Likes: 0

From: Burke VA

I'm freezing!!

So you don't think it's a vacuum problem? what does the ignition switch have to do with the heater?

How would I test for power?

Jayson
78 F100

Feb 26, 2003 | 02:11 PM

m1tommy

Freshman User

Joined: Feb 2003

Posts: 36

Likes: 0

From: central Arkansas

I'm freezing!!

Sir, When my '83 F-150 fan stopped, I replaced the switch. It cost about $20 from a dealership (in '91) and an afternoon of my time. Do NOT drop the control unit on the floorboards, or you'll spend a looooong aftrnoon reassembling all those linkages, springs and ***** in their detents! After I got that back together, I noticed that the switch could have been removed without removing the entire control assembly.....

Or, perhaps do like my dad w/ his '66 Chevy truck: drill a small hole in the fan motor huosing and squirt WD-40 in it. It worked for 20+ years, but did stink some.
HTH,
Tommy

Feb 26, 2003 | 02:47 PM

76_390FE

Freshman User

Joined: Jan 2003

Posts: 34

Likes: 0

I'm freezing!!

The ignition switch doesn't control the fan motor...I would check the wiring, especially the little brown plug right up by the fan motor. Maybe it came unpluged just a bit.

Feb 26, 2003 | 07:59 PM

ST_Wilson

Senior User

Joined: Nov 2002

Posts: 204

Likes: 0

From: Shirley USA

I'm freezing!!

The ignition switch controls when the accessories get power, sometimes the contacts wear out in the switch or the wires work out of the housing or harness.