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73-87 Chevy _ GMC Trucks => Interior & Equipment => Heating, Ventilation & Air Conditioning (HVAC) => Topic started by: Buddy on October 17, 2010, 06:07:31 am

Title: heater ??
Post by: Buddy on October 17, 2010, 06:07:31 am

Dont have the truck running yet but I do have my power running and everything else. My question is this, if I just turn the key on without the truck running will my fan work? last night I turned the key on to do some work to my lights and I noticed that my fan wasn't working. So I thought maybe the truck has to be running for this? wasnt sure and cant start the truck for a bit yet as I still need fliuds and a rad etc...

Title: Re: heater ??
Post by: Irish_Alley on October 17, 2010, 10:58:53 am

Check your fuses and make sure you have power to the wire running to the fan. It should be running even with the engine off

Title: Re: heater ??
Post by: beastie_3 on October 17, 2010, 12:43:00 pm

X2. Fan should always be turning.

Title: ok seem to have a problem
Post by: Buddy on October 17, 2010, 05:40:08 pm

As i have said before I am just starting to get the truck back together and m finding a ton of problems. I never drove this truck just bought it and tore it down. todays problem is my heater fan doesnt seem to be working so I have taken everything apart and have found the plug in the back of the controls is toast. The I tried to wire it direct to see if anything would work and nothing. have to try and find a new plug. Afetr that I tried my wipers and as you would guess no go. Haven't looked into that to much just find that up and gave up for tonight. just so ypou know i did check all the fuses and we are good to go. This truuck wiring was hacked up pretty bad before I got the truck. I am no pro when it comes to electrical but I am trying. If anybody has any input I am all ears.

Title: Re: heater ??
Post by: beastie_3 on October 17, 2010, 11:28:56 pm

Be sure to check out the tech section for good wiring diagrams