HELP, NEED AC RELAY LOCATION!
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Senior User
Joined: Jul 2006
Posts: 192
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From: Florence,SC
HELP, NEED AC RELAY LOCATION!
Hi Guys, I would really appreciate some help on this. I have a 2000 F250 7.3 Liter Diesel Super Duty Crew Cab. I have searched my owners manual high and low for the location of the AC relay; the manual is unclear, unless I am just plain dumb. I also searched online, but for the life of me I cannot figure out which one it is. NOTE: I am not talking about the AC Diode in location #36 under the hood. I'm talking about the black cube shaped relay with 5 spade contacts. I have checked all fuses. The blower and temperature adjustment control work just fine. I recently, 2 months ago, had the AC serviced (recharged) and all was fine. One day I started out as usual and the compressor would not kick in. It seems as though the clutch gap is OK and I see no signs of leakage in the system whatsoever. Sincere thanks in advance for any help!
Lead Driver
Joined: Jun 2003
Posts: 8,298
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From: Damon (South East Texas)
Hi Guys, I would really appreciate some help on this. I have a 2000 F250 7.3 Liter Diesel Super Duty Crew Cab. I have searched my owners manual high and low for the location of the AC relay; the manual is unclear, unless I am just plain dumb. I also searched online, but for the life of me I cannot figure out which one it is. NOTE: I am not talking about the AC Diode in location #36 under the hood. I'm talking about the black cube shaped relay with 5 spade contacts. I have checked all fuses. The blower and temperature adjustment control work just fine. I recently, 2 months ago, had the AC serviced (recharged) and all was fine. One day I started out as usual and the compressor would not kick in. It seems as though the clutch gap is OK and I see no signs of leakage in the system whatsoever. Sincere thanks in advance for any help!
Senior User
Joined: Feb 2004
Posts: 249
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If you're in low ambient temps the conpressor won't run to keep from slugging the evaporator core. (On edit I see that you're in SC, probably not the issue). Did you test for power and ground at the ac clutch pigtail?
Lead Driver
Joined: Jun 2003
Posts: 8,298
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From: Damon (South East Texas)
Lead Driver
Joined: Jun 2003
Posts: 8,298
Likes: 25
From: Damon (South East Texas)
Rich, can you elaborate? The two small junction boxes, on my '01 truck, house the Trailer Tow B/U Lamp & Trailer Battery Tow Charge Relays and the ESOF #1 & #2 Relays.
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AC clutch
Can the AC clutch kick in even if the ac is not turned on ? I smelt something odd got home popped the hood and the AC clutch had minor smoke coming from ac clutch i did turn my temp from midway to cold to stop warm air and the switch from floor/ dash to just dash as it was a nice day out and felt a bit toasty in the cab but before i check to make sure pump will turn to decide if i just replace clutch assemb or the whole pump or do i have a short that would melt the coil as to the burnt electric smell
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Joined: Jan 2005
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From: Henderson, NV
If memory serves, the AC is switched on any time the mode switch is turned to the right aside from floor only mode. I will check my manual to confirm. Just to be sure your clutch is not jammed, unplug the clutch and see if it disengages.
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Ah I'm old school as thinking goes as to the only time the ac pump gets any power is when the switch is ac or defrost . But it's obvious my magnetic coil is toast as to the burnt electrical smell it was faint the last couple miles home from going to town. I haven even began to dig in yet. As being so frustrated that I just fixed a few months ago a fuel pump short between the frame and the engine that took me a lot of digging and trouble ..
FTE Chapter Leader
Joined: Jan 2005
Posts: 13,111
Likes: 4,715
From: Henderson, NV
Ah I'm old school as thinking goes as to the only time the ac pump gets any power is when the switch is ac or defrost . But it's obvious my magnetic coil is toast as to the burnt electrical smell it was faint the last couple miles home from going to town. I haven even began to dig in yet. As being so frustrated that I just fixed a few months ago a fuel pump short between the frame and the engine that took me a lot of digging and trouble ..
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