Question about 1998 Volvo S70

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Air conditioner will stop working after 10 minutes. Turning the air off than back on will sometimes get the air working again?

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6ya6ya
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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: Air conditioner won't stay on.

Most likely it is not related to the switch. More likely is the AC system is undercharged on refrigerant. The AC system will kick in when the refrigerant pressure on the low pressure side is high enough. After the compressor runs for a few minutes, this causes the low pressure side to drop below operating range and the low psi safety switch turns off the AC system. Once it has shut off the pressures stabilizes to a level where the safety switch will let the system operate again, making you think after turning the AC switch off and on again that it might be the problem. The best way to diagnose this problem is to use a guage manifold set to monitor what the pressures in the AC system are actually operating at when this occurs.

Posted on Aug 10, 2008

  • 1 Answer

SOURCE: 1998 Volvo V70 A/C Intermittent

I had exactly the same problem. When your engine is cold and off check the gap on your ac compressor with a feeler gauge, it should be between 0.3 and 0.5mm. If it is larger you need to re-shim which invloves undoing a nut on the end off the compressor and removing the clutch plate, then removing the appropriate shims (look like washers) then replace. The reason it blows warm after 10 minutes or so is because the ac compressor gets hot and the clutch gap gets too large for the electro-magnetic clutch to engage. Some people would say that you need a new compressor but all you need to do is a re-shim.

Posted on Mar 26, 2009

roy7777
  • 109 Answers

SOURCE: 1998 Volvo V70 A/C intermittent

I AM AN ASE CERTIFIED VOLVO----MASTER TECH AND YOUR PROBLEM W`HICH IS COMMON ON ALL 850,S ANDS70,S THE PROBLEM IS PROBALLY AT LEAST 70% DUE TO AN AIR-FLOW RISTRICTION TO THE CONDENSOR FIRST IS SYSTEM AT FULL CHARGE LOW SIDE 25-33 PSI AND YOU AND I REPEAT ONLY CHARGE SYSTEM ON THE LOW SIDE THERE IS NO AND I REPEAT NO HIGH PRESSURE CONNECTOR AND WHAT I WOULD DO IS RUN AGOOD THICK WIRE FROM A/C COMPRESSOR AND A 30 AMP FUSE FROM A CIRCUIT LIKE THE HEATED SEATS FROM INSIDE THE CAR WITH A TOGGLE SWITCH AND A THERMOMETER IN CENTER AIR DUCT AND MANUALLY SHUT THE SYSTEM DOWN IF IT FALLS BELOW 40 DEGREES AND WATCH THE THERMOMETER EVERY 7 MINUTES AND THE MAIN PROBLEM IS THE ENGINE FAN CIRCUIT I HAVE DONE DOZENS OF THESE AND THE PROCEDURE IS WHAT I WROTE

Posted on May 04, 2009

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1 Answer

My ac work for sometime then produce a noisy sounds followed by releasing hot air, what could be the problem?


Your air conditioner clutch plate might be worn. Fixed my volvo when the air con ran for about 10 minutes then stopped by using cable ties. You can google volvo air conditioning fix with cable tie to find a few ways to do it. Here is a youtube clip too. https://www.youtube.com/watch?v=F9x6TePYs60

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Someone will need to find out if the compressor clutch is failing, or if it is loosing power due to a pressure switch or other problem.
A faulty relay or switch could get hot and switch off power to the compressor.

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My nissan engine went to hot after idling in traffic abt 30 minutes with air conditioner on. We put in coolant and let idle for about 10 minutes and it was okay. Then we went to a department store and it...


Hi. Are you runing out of water in the radiator or at the reserve? if this happens there might be leak on the radiator or to the hoses. If there is no leak, then this could be the cooling system of the car that is having a problem. Try to check first the water pump.

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there can be a problem to air conditioner of the car . I guess you just have to go to the dealer or the toyota car shop for repair of the air conditioner . may be it's the fan of the air con that is not working properly. they can replace it .Because it is design to that car .

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1 Answer

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you still got a leak,could be the ac hose,recharge again but this time w/dye so u can see if theres a leak,good luck keep posted..

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My air conditioner in my 2003 KIA Sedona sometimes works


ITS JUST A COMMON PROBLEM A CONTACTED MY SUPPLIER AND HE FIVED AS ITS ALL A FAULT

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Possible solution for susuns: turns out my problem was an improper freon charge. If your problem is the same as mine your a/c cools very well, but stops blowing air after about 20 minutes. If so, your evaporator core is freezing over and the ice is blocking air flow. Also after parking the truck water will continue to drip from the truck for a long time. To test this theory next time it occurs, switch the selector to vent and the fan to high. You should notice the air flow return within 5-10 minutes or less, however the air will still be quite cold due to the ice formed on the core. If all this fits your situation, take your truck to an experienced technician and have the freon pressures checked. My system needed to be charged a little on the high side to prevent the freezing up.
Hope this helps, capn0623

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