Defroster - The 1947 - Present Chevrolet & GMC Truck Message Board Network

nitor · 10-26-2005, 08:38 PM

Does everyone's defroster suck or is just mine? The thing hardly puts out any air at all.

Fatback · 10-26-2005, 10:15 PM

Quote:

Originally Posted by nitor

Does everyone's defroster suck or is just mine? The thing hardly puts out any air at all.

Are your hoses in decent shape? Also, Does it blow strong in the floor?

al's71gmc · 10-27-2005, 06:57 AM

They suck compared to later model rigs IMO. Check hoses and check the blower to make sure the hi-speed works. The PO of my truck blocked off the passenger side vent tube, so most of the air goes to driver's side. I was going to fix it, but this way my window clears fairly quickly, and once the cab warms up the other side clears too. IIRC the blowers from an A/C truck put out quite a bit more air.

68C15 · 10-27-2005, 07:05 AM

mine work better than anyone could ask for. of course I have 2 block heaters & an oil pan heater

al's71gmc · 10-27-2005, 07:24 AM

Hey Nitor, I used to live outside Morrow, on Whitegate Dr.
Al

nitor · 10-27-2005, 08:11 AM

The hoses are all good and it blows strong on the floor and through the dash, but hardly any air comes throught the defroster.

Al, I live about three miles south of Morrow on 22/3 in a subdivision called Wedgwood.

67ChevyRedneck · 10-27-2005, 08:12 AM

Quote:

Originally Posted by nitor

The hoses are all good and it blows strong on the floor and through the dash, but hardly any air comes throught the defroster.

Al, I live about three miles south of Morrow on 22/3 in a subdivision called Wedgwood.

Is it possible that your defrost cable thing has broken? The cable moves a door thingy inside the heater box in the cab which switches the air flow from the floor to the defroster. Run the heat and move the lever and you should hear the door open/close and there should be some resisitance in the lever. If it moves freely something may be broken or loose. Mine quit working once and it turned out the back end of the lever had broken off. Other than that, mine blows (haha, I said blows) very well and defrosts the window fairly quickly.

farside847 · 10-27-2005, 10:48 AM

Yeah, it should blow pretty hard through the top vents. After I redid my hoses full power is now strong enough to move my sunglasses if I set them on the dash.

10-26-2005, 08:38 PM	#1
nitor Too many projects Join Date: Aug 2002 Location: Morrow, OH Posts: 344	Defroster Does everyone's defroster suck or is just mine? The thing hardly puts out any air at all. __________________ Jim '55 Chevrolet Pickup '56 Chevrolet Belair '04 Chevrolet Astro '95 Chevrolet Blazer

10-27-2005, 06:57 AM	#3
al's71gmc 4 eyed fever Join Date: Jul 2005 Location: Eureka, Nevada Posts: 500	Re: Defroster They suck compared to later model rigs IMO. Check hoses and check the blower to make sure the hi-speed works. The PO of my truck blocked off the passenger side vent tube, so most of the air goes to driver's side. I was going to fix it, but this way my window clears fairly quickly, and once the cab warms up the other side clears too. IIRC the blowers from an A/C truck put out quite a bit more air. __________________ 1971 GMC 2500 4x4 1972 GMC Sierra Grande 1/2 t 4x4-#1 son's truck. Recently completed resto. 4 YO daughter," Daddy, I like your truck better than Mom's." (2000 F350-ranch truck) Smart kid!!

10-27-2005, 07:05 AM	#4
68C15 blood type; Retumbo Join Date: Jan 2004 Location: next to my reloading bench Posts: 10,269	Re: Defroster mine work better than anyone could ask for. of course I have 2 block heaters & an oil pan heater __________________ Man rule #77...if you own a 67 stepside with a caddy 472 you will never be in danger of loosing you man card

10-27-2005, 07:24 AM	#5
al's71gmc 4 eyed fever Join Date: Jul 2005 Location: Eureka, Nevada Posts: 500	Re: Defroster Hey Nitor, I used to live outside Morrow, on Whitegate Dr. Al __________________ 1971 GMC 2500 4x4 1972 GMC Sierra Grande 1/2 t 4x4-#1 son's truck. Recently completed resto. 4 YO daughter," Daddy, I like your truck better than Mom's." (2000 F350-ranch truck) Smart kid!!

10-27-2005, 08:11 AM	#6
nitor Too many projects Join Date: Aug 2002 Location: Morrow, OH Posts: 344	Re: Defroster The hoses are all good and it blows strong on the floor and through the dash, but hardly any air comes throught the defroster. Al, I live about three miles south of Morrow on 22/3 in a subdivision called Wedgwood. __________________ Jim '55 Chevrolet Pickup '56 Chevrolet Belair '04 Chevrolet Astro '95 Chevrolet Blazer

10-27-2005, 10:48 AM	#8
farside847 Registered User Join Date: Feb 2005 Location: Bay Area, California Posts: 995	Re: Defroster Yeah, it should blow pretty hard through the top vents. After I redid my hoses full power is now strong enough to move my sunglasses if I set them on the dash. __________________ 1971 Chevy C10 Shortbed Stepside, 307v8 3-on-the-tree



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