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Old 04-15-2011, 07:32 PM
Sholt25 Sholt25 is offline
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Default Loud click, like a clutch engaging while idling

I've noticed that when my 3.0 is idling in park, or even sitting at a light in drive, there is a sound like a clutch engaging or something, kind of like turning on the air or something. You can hear the click and then the engine revs up a little to compensate. I can't help but think it's robbing some horse power and maybe causing some MPG loss, it happens every couple of minutes or so, I thought maybe it was the fan kicking in, but it doesn't make sense that it would be doing that all the time, anyone experience this?
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Old 04-15-2011, 07:35 PM
Badmotorfinger1 Badmotorfinger1 is offline
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Default Re: Loud click, like a clutch engaging while idling

AC compressor.
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Old 04-15-2011, 07:56 PM
Sholt25 Sholt25 is offline
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Default Re: Loud click, like a clutch engaging while idling

I'm not using the AC though, would it do that even if the air is off?
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Old 04-15-2011, 08:16 PM
darkstar_420 darkstar_420 is offline
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Default Re: Loud click, like a clutch engaging while idling

my f150 does it all the time without ac on, dunno what it is but i would call it normal
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Old 04-15-2011, 08:19 PM
01_ranger_4x4 01_ranger_4x4 is offline
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Default

Yeah it runs the compressor in other modes than just the ac, its normal

[posted from my space aged wireless mobile communtication device using tapatalk]
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Old 04-15-2011, 08:38 PM
rangerstranger rangerstranger is offline
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Default Re: Loud click, like a clutch engaging while idling

get a can of refridgerant and charge your A/C unit and see if it stops.
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Old 04-15-2011, 08:51 PM
Twisty Twisty is offline
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Default Re: Loud click, like a clutch engaging while idling

Quote:
Originally Posted by 01_ranger_4x4 View Post
Yeah it runs the compressor in other modes than just the ac, its normal

[posted from my space aged wireless mobile communtication device using tapatalk]
It works as a de-humidifier.
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Old 04-15-2011, 09:13 PM
bcghosttowns bcghosttowns is offline
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Default Re: Loud click, like a clutch engaging while idling

the AC compressor kicks in and out to keep it lubed up,thats what you hear.It happens in defrost as well because your AC pump is used with your defrost.Turn your selector to off and it will go away,turn it to your feet or your face and it will go away,turn it to defrost or feet and defrost and it will click.
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Old 04-16-2011, 04:41 PM
Sholt25 Sholt25 is offline
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Default Re: Loud click, like a clutch engaging while idling

Well, I guess Bcghosttowns is right, if I keep the controls on vent, floor, or off, it doesn't do it. Thanks! I am going to check the mileage again now, I was averaging 15.5 miles a gallon, but I am thinking it will go up a little because I pretty much had it on defrost all the time, I'll post the results.
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  #10  
Old 04-16-2011, 05:12 PM
VegasRanger02 VegasRanger02 is offline
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Default Re: Loud click, like a clutch engaging while idling

Yea, it is normal even though it doesnt seem normal. My truck does it when I turn the heat on ( i think with defrost only) or AC on. You can actually see the clutch click into place if you pop the hood while its running with the defrost on.
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