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06-30-2014, 08:39 AM
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#1 |
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Registered User
Join Date: Mar 2000
Location: Lake Jackson, TX.
Posts: 1,930
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seam to be losing AIR
just fixed the air door that little plastic piece breaks on. Well I fixed it with a little piece of metal bracket and it opens and closes now. Still dont get much air through the vents after putting the all the vents back. and barely get any air through the defroster vents...... come out strong through the flor vent though
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2004 Silverado Crewcab (Dark Spiral Gray) |
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06-30-2014, 08:48 AM
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#2 |
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78K & 79C Jimmys
Join Date: Nov 2009
Location: Ottawa Ont CANADA
Posts: 7,901
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Re: seam to be losing AIR
sounds like somethings come loose
defrost and dash vents should be off
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John 1978 GMCJimmy4X4-350/203 1979 GMCJimmy4X2-305/350 |
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06-30-2014, 07:53 PM
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#3 |
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Registered User
Join Date: Mar 2000
Location: Lake Jackson, TX.
Posts: 1,930
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Re: seam to be losing AIR
Ok I got something that is messed up. I did notice that (truck running) I put it on MAX AC and the vent on the passenger kick panel opened up. I figured MAX would be all inside air..... I think the PO messed something up when the heater core was changed. I have not had it out at all
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2004 Silverado Crewcab (Dark Spiral Gray) |
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06-30-2014, 10:57 PM
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#4 |
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78K & 79C Jimmys
Join Date: Nov 2009
Location: Ottawa Ont CANADA
Posts: 7,901
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Re: seam to be losing AIR
I'd check the lines are right then
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John 1978 GMCJimmy4X4-350/203 1979 GMCJimmy4X2-305/350 |
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07-01-2014, 08:20 AM
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#5 |
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Registered User
Join Date: Mar 2000
Location: Lake Jackson, TX.
Posts: 1,930
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Re: seam to be losing AIR
yea, now I just gotta make the time for that
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2004 Silverado Crewcab (Dark Spiral Gray) |
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07-01-2014, 08:59 AM
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#6 |
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Registered User
Join Date: Apr 2012
Location: Chatt Tn
Posts: 965
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Re: seam to be losing AIR
yes the pass vent opens up, and the one in the cowl by the pass wiper closes, so it recirculates the air.
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88 military v30 crewcab shortbed 5.9 cummins, nv4500, 205 86 k30, 89 diesel burb, 76 gmc pathfinder 71 longbed 5.3 4l80 http://67-72chevytrucks.com/vboard/s...d.php?t=522535 |
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07-01-2014, 10:40 AM
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#7 |
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Registered User
Join Date: Mar 2000
Location: Lake Jackson, TX.
Posts: 1,930
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Re: seam to be losing AIR
so its suppose to open on MAX AC ?????
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2004 Silverado Crewcab (Dark Spiral Gray) |
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07-01-2014, 11:17 AM
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#8 |
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Registered User
Join Date: Apr 2012
Location: Chatt Tn
Posts: 965
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Re: seam to be losing AIR
yes.
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88 military v30 crewcab shortbed 5.9 cummins, nv4500, 205 86 k30, 89 diesel burb, 76 gmc pathfinder 71 longbed 5.3 4l80 http://67-72chevytrucks.com/vboard/s...d.php?t=522535 |
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07-01-2014, 11:39 AM
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#9 |
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78K & 79C Jimmys
Join Date: Nov 2009
Location: Ottawa Ont CANADA
Posts: 7,901
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Re: seam to be losing AIR
No they both close.
Cowel and kick panel.
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John 1978 GMCJimmy4X4-350/203 1979 GMCJimmy4X2-305/350 |
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07-01-2014, 03:24 PM
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#10 |
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Registered User
Join Date: Mar 2000
Location: Lake Jackson, TX.
Posts: 1,930
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Re: seam to be losing AIR
for that matter, why would the kick panel open at all with the AC ON in either position. that lets in outside AIR that is not circulated across the condenser
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2004 Silverado Crewcab (Dark Spiral Gray) Last edited by bigd65; 07-01-2014 at 03:42 PM. |
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07-01-2014, 03:47 PM
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#11 |
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Slots go on anything!
Join Date: May 2003
Location: Richardson, TX
Posts: 5,957
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Re: seam to be losing AIR
It pulls the cooled air across the evaporator coil (behind the dash). The kick panel vent is only open at the top. When the upper flap closes, the blower motor recirculates the inside air.
You might want to pull the ducting and reseal it. That might help out as well.
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1974 Jimmy- 5.3/4L80e/NP241 |
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07-01-2014, 08:52 PM
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#12 |
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Registered User
Join Date: Mar 2000
Location: Lake Jackson, TX.
Posts: 1,930
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Re: seam to be losing AIR
I think I'm going to pull the whole thing. See if the all the actuators are working. Can't get much air through the defroster vents.... Might be backwards.... Knowing the previous stuff I have had to straighten out
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2004 Silverado Crewcab (Dark Spiral Gray) |
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07-01-2014, 10:03 PM
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#13 |
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Registered User
Join Date: Apr 2012
Location: Chatt Tn
Posts: 965
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Re: seam to be losing AIR
the kick panel vent opens so the fan can pull the air from the cab back thru on max, at the same time, the cowl vent thats normally open, so you get fresh air, closes so all you get is recirculating air.
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88 military v30 crewcab shortbed 5.9 cummins, nv4500, 205 86 k30, 89 diesel burb, 76 gmc pathfinder 71 longbed 5.3 4l80 http://67-72chevytrucks.com/vboard/s...d.php?t=522535 |
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07-01-2014, 10:39 PM
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#14 |
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78K & 79C Jimmys
Join Date: Nov 2009
Location: Ottawa Ont CANADA
Posts: 7,901
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Re: seam to be losing AIR
Something else,
The actuator floor/defrost has three holes. I use the middle, all up or down. But some are made to leave some up or down all the time.
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John 1978 GMCJimmy4X4-350/203 1979 GMCJimmy4X2-305/350 |
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07-02-2014, 07:44 AM
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#15 |
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Registered User
Join Date: Mar 2000
Location: Lake Jackson, TX.
Posts: 1,930
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Re: seam to be losing AIR
Crew cab , that makes sense.....
Motor nut , I get VERY LITTLE air through the defroster duct when on DEFROST.... I get a lot of air on the floor when on heat....
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2004 Silverado Crewcab (Dark Spiral Gray) |
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