Question about 1998 Ford F150 Regular Cab

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The ac is making a metal on metal sound when the triangular piece in the front stops spinning...is it about to go? i figure the trangular piece is some sort of clutch,thought im not sure..is there anything i can do to stop the noise until it goes?

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  • Richard Scordino May 11, 2010

    Clutch is failing. You can have it replaced or replace the pump and clutch together...nothing you really can do in the interim though.

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The bearing is gone, have it replace

Posted on Jul 30, 2009

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I have a 99chevy lumina 3.1 6cylinder the a.c. is not getting cold last yr worked great it's just blowing hot air


Can you do a quick observation for me and reply - you can probably do it by yourself - sit in the car with the vehicle running - no radio, etc. and leave the ac off. Once it's idled down and running smoothly, turn your ac on to low - low will keep the fan noise down.

When you turn your ac on - do you hear like a single 'click' and does the motor sound as if it's a little more strained than it was before you turned the ac on? Your compressor (I'll attach a pic) has a 'clutch' on the outside of it - when you turn your ac on, that clutch needs to engage - that's the click sound. Your engine will usually sound like it's under a small amount of strain. Which is normal.

When you turn it off - you should hear that same click, maybe not as predominantly - but the engine should feel as if it's no longer under that strain. This will tell me if your ac compressor's clutch is engaging or not.

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Mary - that part on the front, on front of the assembly - that's your clutch for your ac compressor - this is just a reference - if you stand outside the car and watch - when the car is running but your ac is off, the pulley spins - but that piece with the triangle will not spin with it. When you turn the ac on - that piece on front of the pulley 'engages', makes a click sound - and spins also. That's the clutch - and the assembly in the picture is an ac compressor.


26229443-hsbu0kdn1or1zw4ruk3t3cnr-4-0.png



26229443-hsbu0kdn1or1zw4ruk3t3cnr-4-2.png

The top pic the clutch is engaged - the bottom pic - this assembly is a little different - but these give you an idea of where to look if you can visually observe. Your belt will go around the ac compressor just like the power steering pump, alternator, etc.

26229443-hsbu0kdn1or1zw4ruk3t3cnr-4-5.png

All the best, I'll keep an eye out for a reply - Justin McCartney
17 South Industries

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I have a 2003 Honda Pilot, that is leaking oil?? and I can't find where it is leaking from. It is all over the wheel well of the driver's side and all over the underbody. I looked under the car just behind...


Hello my name is Landon

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