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intermittent A/C

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Old Feb 18, 2008 | 04:52 PM
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intermittent A/C

my A/C started cutting out today. it'll run for 5 or 6 minutes, then blow hot air. switching it off and waiting for a couple of minutes will get it blowing cool air again. then the same thing happens. I know it's not the fan.... could the compressor be switching on - then off. there doesn't seem to be a discernible engine RPM increase when the A/C shuts off.

any ideas? short of taking it to a shop?
 
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Old Feb 18, 2008 | 05:24 PM
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Review the HVAC forum from last summer. Your question seemed to come up every week or two.

Steve
 
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Old Feb 18, 2008 | 08:31 PM
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That sounds like a "Minnesota" truck. That's about all you'd need for the couple of days of summer that I SEEM TO REMEMBER! Sorry I can't help you.

Spotty
 
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Old Feb 18, 2008 | 08:57 PM
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low on freon will do that. check the pressure. when the low pressure cutout hits, the switch shuts off compressor.
 
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Old Feb 19, 2008 | 05:42 AM
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Originally Posted by steve(ill)
low on freon will do that. check the pressure. when the low pressure cutout hits, the switch shuts off compressor.
Low refrigerant will cause short-cycling but it won't cause his symptom.

Steve
 
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Old Feb 19, 2008 | 11:40 AM
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when it does run... it gets cold!

guess I'll take it to the dealer tomorrow.......
 
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Old Feb 21, 2008 | 12:32 PM
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UPDATE:

the dealer says it's a "broken blend door". that seems to be the worst case senario. they are pulling dash out as I type......

oh well - it's only money.... and if I didn't spend ot on "OLD BLUE", I'd spend it on my Harley.......
 
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Old Feb 21, 2008 | 05:44 PM
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Let me know what the final bill is, if you don't mind. I replaced mine myself for about $15.00. That means I should be able to spend the difference on Harley parts, right? Been lookin' at a set of apes..........
 
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Old Feb 21, 2008 | 05:55 PM
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If it means pulling the whole dash, maybe think about replacing the heater core while it's out. How many miles on your truck? Harley parts, motorcycle parts in general, only us motorcyclist will pay 100 bucks for a little chrome piece of some sorts. Or 10 bucks for 2 cups of coffee and some sweets while out riding. Worth every penny....

Spotty
 
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Old Feb 21, 2008 | 07:33 PM
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Originally Posted by Spotty
If it means pulling the whole dash, maybe think about replacing the heater core while it's out. How many miles on your truck? Harley parts, motorcycle parts in general, only us motorcyclist will pay 100 bucks for a little chrome piece of some sorts. Or 10 bucks for 2 cups of coffee and some sweets while out riding. Worth every penny....

Spotty
80k.

yeah... you know HD stands for hundred dollars! this money was earmarked for new pipes (Hooker Troublemakers) PCIII and an Arlen Ness Big Sucker. of course, it wouldn't cover all that..... that's what the HD plastic is for, right?
 
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Old Feb 21, 2008 | 08:36 PM
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By the way: Heater Core??

When you turn the heat on in the cab, sometimes you can smell antifreeze. Is this a problem with the heater core, or something less serious?
 
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Old Feb 21, 2008 | 09:01 PM
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I am sorry to say... heater core. Maybe a hose weeping, check outside on firewall. Any dampness below the glovebox on the floor?

Spotty
 
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Old Feb 22, 2008 | 03:55 PM
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Originally Posted by sheetsd66
Let me know what the final bill is, if you don't mind. I replaced mine myself for about $15.00. That means I should be able to spend the difference on Harley parts, right? Been lookin' at a set of apes..........
I got you beat - I "fixed" the blend door on my '88 Taurus using .028 safety wire - took all of 10 minut2s. total cost - nothing, thanks to the Army provided safety wire.
 
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Old Feb 22, 2008 | 05:43 PM
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Good job!! Except I wouldn't run around telling everybody I owned an 88 Taurus.....or requisitioned materials from the government for personal use. hehe! I thought about sleeving the blend door but when I finally got the broken door out I decided it wasn't worth it. There are times when its o.k. to buy new parts! Too bad the Army don't have a fleet of '99 F150s, huh? Still serving or have you moved on?
 
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Old Feb 22, 2008 | 07:50 PM
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are you kidding????? that car was the best beater I've ever owned.... indestructible!!!!

retired in 1996 with 28 yrs service - Active & Reserve
 
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