Question about Volvo 850

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When my airconditioning is on and I step on the gas it soon goes off I think its a problem with the vacuum pump but idont know where the pump is located can you help? The car is a94 960 volvo sedan. Thanks Mike.

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There are no vacuum pumps but what we called the vacuum bellows. There are 5 units located under the dashboard and all are fitted to the A/C box. Need to check all these bellows and all the hoses connected to them from the connectors at the firewall. However, before endulging into this area, check the valves in the engine bay at the firewall. There are 2 units connected between the vacuum hoses. The black side should be fitted toward the engine and the white toward the conneter at the firewall.

Posted on Jul 16, 2009

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I think youre saying that the ac goes off ifs thats the case the freon may be low or you are accelerating too hard the ac compressor cycles on and off by design and if you need power when accel it will go off. hope this helps you

Posted on Jul 14, 2009

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Hard to pump gas at gas station clicks on an off


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