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1994 850 Turbo AC inoperative MVSOLVED Clutch gap problem

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70
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csbrianp
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1994 850 Turbo AC inoperative MVSOLVED Clutch gap problem

Post by csbrianp »

I own a 94 850 turbo where the AC will not cool above 2000 RPM's. While idling the AC is cold and will cycle once in a while the gauge shows levels are good. It works fine as long as I keep the RPMs below 2000 which is real hard. Once I over the 2000 RPMs the compressor will not kick in until the car is restarted.
I thought it must be the high pressure switch and have swapped it out. A mechanic told be to change the cycle switch but I don't know where to look.

My neighbor has an 02 V70 that is doing the same thing, only difference is theirs doesn't show a pattern and some days the AC works all day.

Any suggestions.

Brian
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abscate
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Post by abscate »

That sounds like classic compressor gap problem. It can be fixed by reshimming (for purists) or by the googable "Volvo AC bread clip fix"
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csbrianp
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Post by csbrianp »

I should point out that, if I race it off the line then let off the AC will stay on, it only happens if I drive continually faster than 2000 RPMs. Also, I can turn the AC off and after a few moments it will kick back on but that only happens once in a while.
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Post by xHeart »

csbrianp wrote:I should point out that, if I race it off the line then let off the AC will stay on, it only happens if I drive continually faster than 2000 RPMs. Also, I can turn the AC off and after a few moments it will kick back on but that only happens once in a while.
Cooling Fan or Compressor?
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csbrianp
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Post by csbrianp »

The compressor will not kick in unless car is restarted.
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csbrianp
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Post by csbrianp »

xHeart wrote:
csbrianp wrote:I should point out that, if I race it off the line then let off the AC will stay on, it only happens if I drive continually faster than 2000 RPMs. Also, I can turn the AC off and after a few moments it will kick back on but that only happens once in a while.
Cooling Fan or Compressor?
Never mind ghetto clutch gap worked. Thanks guys.
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Post by rspi »

'95 855 T-5R M, Panther - 22/28 mpg, 546,000 miles
'95 955 T-5R Yellow Wagon, Lemonade, 180,000 miles
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