So, I'm in the drive-thru at McNasties . . . - Ranger-Forums - The Ultimate Ford Ranger Resource


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  #1  
Old 04-07-2008
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So, I'm in the drive-thru at McNasties . . .

. . . just sitting in my truck waiting for the car in front of me to advance forward so I can pay for my Quarter Pounder and fries. While in line, with the window down, I keep hearing this clicking sound from my engine while it's idling. It clicks, kind of makes the engine idle differently, then about a minute later it clicks again and does the same thing. I know it's not my AC running because I don't have the AC turned on. I heard this same sound on Saturday as well while it was idling.

What's going on do you think? Is that normal?
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Old 04-07-2008
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Year of truck? Engine?
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Old 04-07-2008
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its your idler pulley engaging and disengaging. its normal my truck does the same thing.
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Old 04-07-2008
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or your fan clutch
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Old 04-07-2008
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your ac could be running. if you have your selector on either of the two defrost settings your ac will kick on.
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Old 04-07-2008
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its your idler pulley engaging and disengaging. its normal my truck does the same thing.
idler pulley engaging? what does an idler pulley do when it engages?
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Old 04-07-2008
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Originally Posted by Roach2004 View Post
Year of truck? Engine?
It's a 1999 Mazda B4000 auto 4L with 100K on it. I've had it all of just one week.

Thanks.
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Old 04-07-2008
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or your fan clutch
What's a fan clutch and is it suppose to be doing that?
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Old 04-07-2008
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yup it the AC compressor. if you have the blower blowing on both ur head and feet at the same it will run the compressor. even though it is to the right of the off setting it is still the AC. mine does that too and i have not had it blow up....yet.
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Old 04-07-2008
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your ac could be running. if you have your selector on either of the two defrost settings your ac will kick on.
Hmmm. That may be it. It could have been in the defrost position. I know I had the heater fan running on low.
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Old 04-07-2008
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yup it the AC compressor. if you have the blower blowing on both ur head and feet at the same it will run the compressor. even though it is to the right of the off setting it is still the AC. mine does that too and i have not had it blow up....yet.
That may account for my crappy gas mileage as well.
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Old 04-07-2008
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What's a fan clutch and is it suppose to be doing that?
it turns the fan on and off to cool your radiator
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  #13  
Old 04-07-2008
 
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AC pump is off in "floor only" and "off", all others its on.

"its your idler pulley engaging and disengaging." -WTF? Um, no.
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Old 04-07-2008
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Originally Posted by W1CKY View Post
AC pump is off in "floor only" and "off", all others its on.

"its your idler pulley engaging and disengaging." -WTF? Um, no.
You mean there's no "vent" on this truck without also running the AC compressor in any other switch mode than floor only?
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Old 04-07-2008
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I just checked my truck to see what setting I had the fan on while at lunch and it was in the window defrost mode. So, I guess I was running the AC and that's why it was sounding like that. Okay, at least my compressor is working. Again, probably explains why I was getting such lousy gas mileage my first week of owning the truck.

Thanks for all of your input.
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  #16  
Old 04-07-2008
 
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You can put a switch inline with one of the wires (Purple I think?) that when you shut the witch off (breaks contact) the AC pumps shuts off too. Search around the forum, i think its something like the G and M ac mod or something like that.
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  #17  
Old 04-07-2008
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Just to clear it up, it the AC clutch that makes the noise, not the idler pully, not the compressor, not the fan clutch. All those other things are silent (unless broken)
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Old 04-07-2008
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Originally Posted by Oh5Edge View Post
Just to clear it up, it the AC clutch that makes the noise, not the idler pully, not the compressor, not the fan clutch. All those other things are silent (unless broken)
Got it. Thanks.
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Old 04-07-2008
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and there are three positions that dont cycle the clutch, off, vent, and floor.

i have a switch in mine.....
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Old 04-07-2008
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its turns the compressor over a couple times to keep it oiled so it doesnt sieze up when you go to turn it on for the summer if you left it off the whole winter the grease and oil in it would drain to the bottom and it would lock up when you turn it on,
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