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Discussion Starter · #1 ·
We've had the car for over a year now. Recently air.con stopped working. I checked it, when I turn on the A/C the engine sound used to change and you'd see dip in revs. Now there is no reaction when I turn on the A/C. So I suspect the compresor is not engaging for some reason. There must be a clutch on it, which has stopped engaging. So my question is what would be a likely cause. I'll take it to a shop but I want to be informed on what to expect. Or is it something I can take a look at myself. <p>PS: In case there are "use the search engine" police amongst you I did a search and found many threads, none of which seemt to explain what to expect.
 

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Re: 98 S70 Air conditioning problem (JetBlack)

You can expect to buy a new compressor.<br>Unless its just an electrical glitch.<br>Take it to the shop. Let the pro's work on it.
 

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Re: 98 S70 Air conditioning problem (VolvoMax)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>VolvoMax</b> »</i></TD></TR><TR><TD CLASS="quote">You can expect to buy a new compressor.<br>Unless its just an electrical glitch.<br>Take it to the shop. Let the pro's work on it.</TD></TR></TABLE><br>No, no, no<br>If his compressor isn't coming on the USUAL deal is his evaporator is shot and the freon has leaked out, ($1300-$1500)<br>No automotive compressor will engage when the unit is out of juice.<br>I'll also bet that if you charge it, it will work just fine for.... 6 months, 1 month, 2 weeks, two days <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/rolleyes.gif" BORDER="0"> <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/frown.gif" BORDER="0"> If it's at the beginning of the end of the evaporator, it <I>may</I> go an entire season on one charge, then the interval becomes shorter and shorter over time<br>He should be so lucky that it is the compressor, 1/2 the expenditure but I'll bet it's another evaporator.<br>The bad evaps did not stop with 850's they are bad all through 2000's, same poor design UNCHANGED for 7 years! <IMG NAME="icon" SRC="http://www.vortexmediagroup.com/images/banghead.gif" BORDER="0">
 

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Re: 98 S70 Air conditioning problem (JRL)

Hmm, forgot about the evap.<br>Although that fix is almost as bad as buying a compessor.
 

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Re: 98 S70 Air conditioning problem (VolvoMax)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>VolvoMax</b> »</i></TD></TR><TR><TD CLASS="quote">Hmm, forgot about the evap.<br>Although that fix is almost as bad as buying a compessor.</TD></TR></TABLE><p>Worse <IMG NAME="icon" SRC="http://www.vortexmediagroup.com/images/banghead.gif" BORDER="0">
 

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Re: 98 S70 Air conditioning problem (VolvoMax)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>VolvoMax</b> »</i></TD></TR><TR><TD CLASS="quote">Hmm, forgot about the evap.<br>Although that fix is almost as bad as buying a compessor.</TD></TR></TABLE><br>About THREE (3) times $$ worse!!<br>Compressors rarely go bad, evaporators almost ALWAYS go bad
 

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Discussion Starter · #7 ·
So you guys are saying I need to spend $3k to get the AC working again? I think I'd rather not at that price. How can you be sure the compressor or the evap. unit are dead? They were working just fine only recently. So I am guessing it is just an electrical glitch. Any ideas on what to look for?<p>Called a local shop that only works on Volvos today. They said they can re-charge the AC gas for $150, all inclusive. So I am considering taking it to them.
 

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Re: (JetBlack)

When the local shop recharges it, they will/should add a dye, so that if it leaks out they will be able to tell where the leak is. Most likely, a leak is caused by a hole in the evap, but other seals and hoses have been known to fail as well. There is also a switch that turns off the comp when freon gets too low- sometimes that switch is faulty. You could be fine with just a simple recharge but that is where you start.
 

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Re: (Wayne T5)

Low side pressure switch fails in Fords often. It's usually a simple fix. You can buy R134A at Autozone with a UV dye in it that can be seen under UV light. Can't believe an evaporator is that expensive. It must be really buried...<p>Go get a manifold pressure gauge that attaches to both the high and low side ports of your A/C. Don't use those cheapo gauges at most auto parts stores that only attach to the low side. Harbor Freight sells them for around $40-50. Then you can add refrigerant from there. If the compressor then cycles on, you got a leak. R134A does not magically disappear. If the comp. doesn't cycle on, then it's probably that switch.
 

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Re: (Majisto)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>Majisto</b> »</i></TD></TR><TR><TD CLASS="quote">Low side pressure switch fails in Fords often. It's usually a simple fix. You can buy R134A at Autozone with a UV dye in it that can be seen under UV light. <B>Can't believe an evaporator is that expensive</B>. It must be really buried...<p>Go get a manifold pressure gauge that attaches to both the high and low side ports of your A/C. Don't use those cheapo gauges at most auto parts stores that only attach to the low side. Harbor Freight sells them for around $40-50. Then you can add refrigerant from there. If the compressor then cycles on, you got a leak. R134A does not magically disappear. If the comp. doesn't cycle on, then it's probably that switch.</TD></TR></TABLE><br>Evap replacement is about a 10 hour job (plus parts of course) The entire dashboard comes apart (as with most cars). About a $1300-$1400 job most is labor<br>As was said, charge the system and add dye.<br>If it works you know your compressor is fine and you just have a leak.<br>Unfortuately 9 times out of 10, it's the evaporator
 

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Re: 98 S70 Air conditioning problem (JetBlack)

That is almost always correct. Compressors do not generally go bad. It is one or more other related items that make for no clutch engagement. Low pressure switch, high pressure switch is the main reason it will not. Evap or condenser/reciver-dryer or a hose/pipe is the root cause. Electrical connection is one possible other thing, last case thing mostly. But most times not the main-simple cause. <IMG NAME="icon" SRC="http://********************/smile/emthup.gif" BORDER="0">
 

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Re: (Majisto)

Majisto:<p>Yep, the evaporator is really buried. Like really, <i>really</i> buried. Replacement requires removal of the entire dash down to the firewall, I'm sorry to say. I've been looking for a Volvo besides my 240, and quickly ruled out 850's and S70's because of this problem. It's too bad- my neighbour down the street has a gorgeous, gorgeous 855 wagon, navy paint with beige Bridge of Weir leather. It's for sale- but it has the A/C problem, which makes it out of the question. If it weren't for that, I'd consider it.<p>Hey, at least my 240's evap is easy to get to. <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/biggrin.gif" BORDER="0">
 

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Re: (danemodsandy)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>danemodsandy</b> »</i></TD></TR><TR><TD CLASS="quote">Majisto:<p>Yep, the evaporator is really buried. Like really, <i>really</i> buried. Replacement requires removal of the entire dash down to the firewall, I'm sorry to say. I've been looking for a Volvo besides my 240, and quickly ruled out 850's and S70's because of this problem. It's too bad- my neighbour down the street has a gorgeous, gorgeous 855 wagon, navy paint with beige Bridge of Weir leather. It's for sale- but it has the A/C problem, which makes it out of the question. If it weren't for that, I'd consider it.<p>Hey, at least my 240's evap is easy to get to. <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/biggrin.gif" BORDER="0"> </TD></TR></TABLE><br>Why?<br>Just take off 1300 on the purchase price.<br>(Absolutely no Bridge of Weir leather in a Volvo. I don't think any car uses that anymore except perhaps Rolls or Maybach)
 

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Re: (JRL)

<i>"(Absolutely no Bridge of Weir leather in a Volvo. I don't think any car uses that anymore except perhaps Rolls or Maybach)"</i><p>JRL:<p>Volvo has used BOW since the 740, and is BOW's largest customer. BOW supplies all Volvo leather, including the Atacama in your V70R. Check their Website at <A HREF="http://www.bowleather.co.uk" TARGET="_blank">http://www.bowleather.co.uk</A>. The page specific to the issue is:<br><A HREF="http://www.bowleather.co.uk/sti/web/site/BridgeOfWeir/News/NewsVolvo.asp" TARGET="_blank">http://www.bowleather.co.uk/st...o.asp</A><p>As for the 850 A/C issue, the design seems to be at the root of the problem, meaning that the issue can re-occur. Since I like to keep cars a long time, I could well be looking at periodic replacement. Just my preference to steer well clear of issues like that.
 

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Re: (VolvoBob)

VolvoBob:<p>At least on a 240's heater core, you have some control over the issue. Good cooling system maintenance will minimise the chance that a heater core will go bad. It is definitely true that 240's are at an age where problems like this will crop up, though. <p>I've had to have the dash out of one car (a late-90's Taurus) for a heater core (bad design; there was an electrolysis current problem on those cars that should never have happened in the first place). Car was never right after that, and the work was done by a dealer (I'd been happy with everything else they'd done on the car). Yikes. At least a 240 heater core isn't quite <i>that</i> bad.
 

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Re: (danemodsandy)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>danemodsandy</b> »</i></TD></TR><TR><TD CLASS="quote"><i>"(Absolutely no Bridge of Weir leather in a Volvo. I don't think any car uses that anymore except perhaps Rolls or Maybach)"</i><p>JRL:<p>Volvo has used BOW since the 740, and is BOW's largest customer. BOW supplies all Volvo leather, including the Atacama in your V70R. Check their Website at <A HREF="http://www.bowleather.co.uk" TARGET="_blank">http://www.bowleather.co.uk</A>. The page specific to the issue is:<br><A HREF="http://www.bowleather.co.uk/sti/web/site/BridgeOfWeir/News/NewsVolvo.asp" TARGET="_blank">http://www.bowleather.co.uk/st...o.asp</A><p>.</TD></TR></TABLE><br>Well, if that's true it ain't the B-O-W that I used to know (1970's) which was the finest glove leather around.<br>If you read the "good stuff" is in the R's, the rest of Volvo leather is just plain old generic, commercial auto leather, not even true real leather, it's treated so much.<br>You don't even use leather cleaner on it, just vinyl cleaner. (NOT the R)
 

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Re: (JRL)

JRL:<p>According to the page I linked you to, the current models for which BOW supplies the leather are the S60, V70, XC70, S80 and XC90. That does leave some models, true.<p>BOW makes a lot of different lines, as well. Some are more ordinary, some are finer in quality. They supply 20 different carmakers, they say.<br>
 

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Re: (danemodsandy)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>danemodsandy</b> »</i></TD></TR><TR><TD CLASS="quote">JRL:<p>BOW makes a lot of different lines, as well. Some are more ordinary, some are finer in quality. They supply 20 different carmakers, they say.<br></TD></TR></TABLE><br>I believe that.<br>When I refer to B-O-W, I was referring to the good stuff, like the R leather.<br>When I was using it to restore cars they didn't offer the "cheap stuff," I guess they grew in 30 years <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/eek.gif" BORDER="0"> <br>Their "good line" was always condidered to be the best there was out there
 

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Re: 98 S70 Air conditioning problem (JRL)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>JRL</b> »</i></TD></TR><TR><TD CLASS="quote">...Compressors rarely go bad, evaporators almost ALWAYS go bad</TD></TR></TABLE><p>I'm on my third compressor in my '98 S70, but still have the original evaporator. <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/wink.gif" BORDER="0"> I agree with your statement completely; it's just the irony in my case. <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/biggrin.gif" BORDER="0">
 
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