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1999 Buick Regal AC clutch

Tiny
TCOB
  • MEMBER
  • 1999 BUICK REGAL
  • 3.8L
  • V6
  • 2WD
  • AUTOMATIC
  • 140,000 MILES
AC clutch has no power (diode it will let 0.553 power throe thou) but fuse is good. Also cooling fans not working at all.
Tuesday, June 3rd, 2014 AT 10:38 AM

8 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
So what is the ac pressure?If its too high or too low the ac clutch will be disabled
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Tuesday, June 3rd, 2014 AT 7:22 PM
Tiny
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Good point, I will need a little help with gauges, like do you put both lines on and check low side separately, or open both valves and read simultaneously. Not sure can you walk me thru this? T.Y
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Wednesday, June 4th, 2014 AT 6:49 AM
Tiny
SATURNTECH9
  • MECHANIC
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To check pressure you leave both valves by the gauges themselves closed. You put the hose ends on the ac connection nipples with the shut off valves backed off. Then after hooked up then screw the knobs in. The gauges have shut off valves on the hose ends.
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Wednesday, June 4th, 2014 AT 6:54 AM
Tiny
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OK, did that. Came up with no pressure. That must be why ac clutch not coming on?
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-1
Wednesday, June 4th, 2014 AT 1:13 PM
Tiny
SATURNTECH9
  • MECHANIC
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Thats it people always over look the pressure issue and go straight to trying to figure out why the clutch isnt getting power and turning on. The first thing I check is the pressure glad I could help you.
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Wednesday, June 4th, 2014 AT 1:17 PM
Tiny
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T.Y what would be your next step or steps please if you can help T.Y
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Wednesday, June 4th, 2014 AT 1:26 PM
Tiny
SATURNTECH9
  • MECHANIC
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What I would do is look around for alot of oil build and dirt around the whole ac system. If you dont see anything there replace both high side and low side ac Schrader valves. Then get some r134 with dye in it not with any stop leak in it though. Then charge up the ac and use a dye light to look for leaks.
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Wednesday, June 4th, 2014 AT 10:29 PM
Tiny
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Hay ty I found a leak in condenser, I do plan on changing it along with receiver dryer, and if and when I can find that little tube like filter that is in the line. Do you know were it is, I thought it is between condenser and dryer.
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Monday, June 9th, 2014 AT 6:20 PM

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