Question about 1998 Volvo S70

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Volvo s70, 1998, HVAC is not air out at all

I can't figure out if it's the fuse or a belt. The HVAC is not blowing out any air what so ever. The seat warmers work and the back window defrost works fine. Any suggestions before I get bent over by some mechanic??? Thank you - Single mom with little cash....

Posted by Maureen McGinley on

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swede760

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First check your fuses and clean them and coat them with Dielectric grease, then try replacing the Relay if that does not fix it.

Posted on Jan 28, 2015

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5 Related Answers

Anonymous

  • 324 Answers

SOURCE: heate rwill not produce

replace the control unit.

Posted on Nov 26, 2008

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Anonymous

  • 3 Answers

SOURCE: no air or heat blowing from vents

if the fan is blowing this could be a problem with the climate controll switch that changes the direction of air from floor to defrost to vents, some are vacuum controlled through a vacuum operated mechanism that opens and closes a door in the vents which redirects the air to different places.

Posted on Jun 10, 2009

rtpflh

rtpflh

  • 546 Answers

SOURCE: 1999 Volvo S70 heater and defroster blowing "fog"

suspect leaking heater core.check coolant level.

Posted on Sep 29, 2009

jdoconnell

  • 3 Answers

SOURCE: Vent/heat/defrost broken Volvo 760

I have the same car and had the same problem. The inside air intake for the heater system is located above the passenger's feet. An empty plastic bag got sucked in there and kept the door from moving properly. I had to take off a few panels, then one on the vent. Once I removed the bag, no problem.

Posted on Oct 21, 2009

Testimonial: "This did not solve my problem, but got me on the right track! Thanks!"

Anonymous

  • 1 Answer

SOURCE: 2005 Volvo S40 Side Mirror Defroster?

applgirl2, did you find a fix? I'm having the exact same problem. Driver side works, passenger suddenly doesn't.

Thanks

Posted on Nov 23, 2009

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There is a relay that powers the blower motor circuit . Left I/P fuse box , do you know where that is ? The relay is IGN 3 relay .
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Does the heater blower motor work? That is what blows cool air across and around the heater core and then through the case and out the vents as warm air blowing. The heater motor wiring circuit is separate, and gets pretty complicated with electronic HVAC controls, but it does have fuses.
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{: ) You didn't mention which vehicle model you have, but anyway, you can start by checking all the HVAC fuses if the blower is not blowing at all at any speed.
A usual fault is the rear blower resistor getting open circuited.
The rear a/c blower may be stucked or open circuited.
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