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Poor Air Flow From Heater


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#1 scott 730

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Posted 13 December 2009 - 08:58 PM

New cabin filters
Re boot computer to adjust dampers
Fan works on all speeds
Mode control works fine, discharges from defrost, vent and floor as needed


What else can be a cause of poor air flow? This truck has much less volume of air coming out than my 99 or 2000.

Edited by scott 730, 13 December 2009 - 08:59 PM.


#2 scott 730

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Posted 16 December 2009 - 10:21 PM

??????????????????????????????

#3 HalfTon_Hank

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Posted 17 December 2009 - 11:24 AM

??????????????????????????????



where you live any ice built up around the cowl by the windshield wipers? that will stop or slow air flow. leaves in there? thats all I can think of if the fan is working on all speeds.
Latest truck 2006 RCSB WHITE LT1 3.42 Z71 G80, SNOW PLOW PREP PACKAGE, 17 INCH ALLOYS, 2500HD TORSIONS
Old Truck (Sold) 2000 RCLB Indigo Blue body lift 3", 4.10s, 285/75/16, 4.8, 4X4, painted flares, work truck interior.

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#4 coloradoSkiCountry

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Posted 17 December 2009 - 06:36 PM

pull OUT the in-cab filters and see how big of an improvement there is without those things. I found that by removing my in-cab filter it helped things out BIG time. The thing is just too restrictive, even when new. Even more when dirty. If the original in-cab filters were in there a long time the blower motor may be worn out from having to work so hard.
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#5 scott 730

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Posted 17 December 2009 - 07:40 PM

Thank you. :lol:

#6 scott 730

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Posted 30 January 2011 - 11:45 AM

Still beating this dead horse. What else would cause low air volume from the system??? Heater core fins are clear, fan runs on all speeds,filters have been replaced,......... I have to run this truck 1 or 2 speeds higher on the fan to get the same output as my previous trucks. ????????

#7 scott 730

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Posted 23 January 2012 - 04:11 PM

Anyone????????????????????????

#8 TahoeMike

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Posted 23 January 2012 - 04:21 PM

Comparing it to different model trucks is apples to oranges. Have you compared it to another identical truck?
2008 Silverado 1500 Crew Cab Z71 4X4
Summit White

#9 scott 730

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Posted 23 January 2012 - 07:51 PM

Comparing it to different model trucks is apples to oranges. Have you compared it to another identical truck?


?????????????????????

Not apples and oranges. Comparing this 2001 to my previous 99 and 2000.




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