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08-08-2016, 05:04 PM
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#1 | |
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AF Newbie
Join Date: Jul 2016
Location: ALBA, Texas
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A/c problem
I have checked the charge and it shows to be right on the mark. At an idle the air is cool but not cold as i drive it gets warmer please help
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08-08-2016, 05:05 PM
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#2 | |
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AF Newbie
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Re: A/c problem
Btw its a 1 ton 12 valve
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08-08-2016, 06:05 PM
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#3 | |
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AF Enthusiast
Join Date: Jul 2005
Location: troy, Ohio
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Re: A/c problem
You checked the charge- right on the money--WTF- how do you know?, pressures tell you zilch- the ONLY way to know is by extracting and weighing the refrigerant and comparing it to the under hood label specification.
Too many variables to determine charge level by system pressure-- like rpm, cooling fan operation, blower speed, road speed- ambient temperature- just to name a few...
__________________
Automotive A/C Engineer with: '99 IH 4700 Toy Hauler (2) '95 GEO Prizms both maroon '99 GMC Yukon '95 Chev 3500, 454 Dually Crew Cab- 145k miles- Wife's Camel trailer puller. '94 Astro- 370k miles '94 Firebird Formula- 5.7L 180k miles- gone- '92 Chevy Lumina Van 3.8L 264k '86 GMC S-15 - 2.8L 154k '87 Buick Park Ave . 187k '86 Buick Park Ave 3.8L 199k miles- gone '77 Chevy Vega- 2.5L 175k miles gone but not forgotten '68 Camaro 396 4 spd RS/SS -72k miles- |
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08-08-2016, 07:27 PM
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#4 | |
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AF - Advisor
 
Join Date: Mar 2004
Location: Nashville, Tennessee
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Re: A/c problem
Is the accumulator (the aluminum canister, about 1 quart size), dripping wet with condensation?
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1992 Bravada, 201K, stock 1997 Bravada, 101K, stock...was "called away"  "Cornbread Red", 2001 Dodge 2500,4X4,HO Cummins Diesel,QC,SWB,6spd.,Banks boost&pyro,US Gage fuel press.,Edge Drag Comp,4"exh.,cowl hood, bhaf, black Holley pump, 140gph...13psi WOT, Vulcan Big Line, kevlar/ceramic single disc clutch, cheapo fuel cooler, 8x.010" vco injector nozzles, Cat turbo 62-65-.70A/R, 497hp 1089 tq 8/25/14  Time to turn so's you don't burn. 
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08-09-2016, 12:01 AM
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#5 | |
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AF Newbie
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Re: A/c problem
Yes and the line too but at higher rpms it goes up from 35 to 55 on the guage do you think i might need to replace the filter?
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08-09-2016, 06:36 PM
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#6 | |
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AF - Advisor
Join Date: Mar 2004
Location: Nashville, Tennessee
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Re: A/c problem
Hmm, I haven't sped the engine up on mine to see if the low side pressure increases or decreases.
Does the air come out the vents you select? Have you turned the temperature knob to hot, to be sure the blend door is working?
__________________
1992 Bravada, 201K, stock 1997 Bravada, 101K, stock...was "called away" "Cornbread Red", 2001 Dodge 2500,4X4,HO Cummins Diesel,QC,SWB,6spd.,Banks boost&pyro,US Gage fuel press.,Edge Drag Comp,4"exh.,cowl hood, bhaf, black Holley pump, 140gph...13psi WOT, Vulcan Big Line, kevlar/ceramic single disc clutch, cheapo fuel cooler, 8x.010" vco injector nozzles, Cat turbo 62-65-.70A/R, 497hp 1089 tq 8/25/14 Time to turn so's you don't burn.
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