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08-16-2007, 07:38 AM
| #1 |
| Senior Member  Join Date: Oct 2006
Posts: 81
 | riding HOT in Alabama For anyone that hasn't heard, we are in our 10th straigth 100+ degrees day in the heart of dixie ( a new record fyi ). My problem is that my AC on my 1989 S10 does not work. I believe it is the AC clutch because it will not engage even if I jump it straight to the battery. I have never removed an AC clutch and would like to know the procedure. Do I need any special tools? Also please give me a "AC gauges for dummies" lesson on diagnosing AC units using gauges. I like to do my own stuff. Roll Tide Roll
__________________ Jeff Tuck ( me likes me some GMs ) 1968 Chevy C10 straight 6 1989 Chevy S10 v6 4.3 1994 Chevy Silverado Z71 4X4 v8 5.7 1999 GMC Jimmy v6 4.3 |
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08-16-2007, 09:24 AM
| #2 |
| Senior Moderator  Join Date: Apr 2005 Location: Texas
Posts: 3,789
 | I don't remember when they switched to R-134a. Your's being an 89 I think it is still R-12. If it is you can't buy it. You'll have to take it to a shop. You can convert it to 134 but you'd have to change all o-rings. The clutch should come off pretty easily. remove the belt. There should be 1 bolt or nut in the center of the clutch. remove that and the clutch will come off. Might need to pry a little but don't get carried away with it. If it is 134 then the high side should be around 220 and low side around 40 it idle.
__________________ John Wayne 2000 F-350 7.3L Powerstroke 4x4 |
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08-16-2007, 10:31 AM
| #3 |
| Senior Member Join Date: Oct 2006
Posts: 81
| thanks jw mine was R12 but I had it changed over years ago. thanks for responding.
__________________ Jeff Tuck ( me likes me some GMs ) 1968 Chevy C10 straight 6 1989 Chevy S10 v6 4.3 1994 Chevy Silverado Z71 4X4 v8 5.7 1999 GMC Jimmy v6 4.3 |
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08-16-2007, 11:17 AM
| #4 |
| Senior Moderator Join Date: Apr 2005 Location: Texas
Posts: 3,789
| ah Good deal! If it is alread changed then no worries on that. Hope you get et fixed cause it is to dang hot down here huh.
__________________ John Wayne 2000 F-350 7.3L Powerstroke 4x4 |
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08-16-2007, 11:56 AM
| #5 |
| Senior Member Join Date: Oct 2006
Posts: 81
| more questions Is there an easy test to check the AC clutch coil? Being that the clutch does not engage even if jumped straight to 12 volts, leads to a bad coil or am I way off base?
__________________ Jeff Tuck ( me likes me some GMs ) 1968 Chevy C10 straight 6 1989 Chevy S10 v6 4.3 1994 Chevy Silverado Z71 4X4 v8 5.7 1999 GMC Jimmy v6 4.3 |
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08-16-2007, 01:02 PM
| #6 |
| Senior Moderator Join Date: Apr 2005 Location: Texas
Posts: 3,789
| if you have a direct ground and hot it should click. They only other way I know to do it off hand is to jump the low pressure switch with the ac controls and key on.
__________________ John Wayne 2000 F-350 7.3L Powerstroke 4x4 |
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08-16-2007, 02:02 PM
| #7 |
| Senior Member  Join Date: Jun 2005
Posts: 2,757
| must be nice to have an AC to worry about 
__________________ 99 suburban xlt 96 silverado 91 wrangler (my baby  )08 Honday shadow 750 (my mistress  ) |
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08-16-2007, 02:13 PM
| #8 |
| Senior Member Join Date: Oct 2006
Posts: 81
| Thanks JW, I have tried the pressure switch thing and it does nothing.
__________________ Jeff Tuck ( me likes me some GMs ) 1968 Chevy C10 straight 6 1989 Chevy S10 v6 4.3 1994 Chevy Silverado Z71 4X4 v8 5.7 1999 GMC Jimmy v6 4.3 |
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08-16-2007, 02:14 PM
| #9 |
| Senior Member Join Date: Oct 2006
Posts: 81
| Camino, I don't know what's worse having AC that won't work or realizing the mistake of not getting AC.
__________________ Jeff Tuck ( me likes me some GMs ) 1968 Chevy C10 straight 6 1989 Chevy S10 v6 4.3 1994 Chevy Silverado Z71 4X4 v8 5.7 1999 GMC Jimmy v6 4.3 |
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08-16-2007, 02:56 PM
| #10 |
| Senior Moderator Join Date: Apr 2005 Location: Texas
Posts: 3,789
| yeah it's probably a bad clutch then.
__________________ John Wayne 2000 F-350 7.3L Powerstroke 4x4 |
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