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1999 S70 Dead Climate Control

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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volvooh
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1999 S70 Dead Climate Control

Post by volvooh »

As the title states, its just dead. No fan, no heat, no a/c. I checked the two fuses in the engine compartment and they are fine. If I play with it long enough I get a green light saying the A/C is on and vent is on recirculate, but all buttons are unresponsive.

Background- son drove last night and it worked. Complained of an odor with A/C on. We have had a lot of rain and car has not been driven much, so I went out this more and sprayed a little bleach cleaner in the vents (I do this on my land cruiser). Went out two hours later and nothing. For the record, it had just rained about an hour before and I did not bother to turn on the A/C prior to spraying. Could it be excess water getting into the ventilation system? I've done the disinfectant in the vents before without issue, but could that have been it as well?

obayha
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Post by obayha »

Are you spraying in the vents on the dash? If so, don't see how that would get to controller. It's said you can pop out the controller after removing the radio (HAVE CODE BEFORE REMOVING RADIO). Check the connections. You may be getting power to some, but not all parts. Clean the connections.

What Landcruiser do you have? You on MUD?
Mine '82 FJ40.
Shane
1998 V70 T5 331,000 :( Her last day was on 3 cylinders.
New to me 1999 V70 NA 163,000 Now at 217,000
2006 V70 2.5T in driveway (WIFE'S)
1982 Toyota FJ40 Land Cruiser

volvooh
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Post by volvooh »

Yes- I have an 80 series, on Mud as Toyotaoh.

Besides the fuses under the hood, are there any other circuit breakers or fuses in another location?

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abscate
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Post by abscate »

Start your car and watch the LEDS on the ECC control unit. Do they start flashing after about 10 seconds?? Wait at least one minute
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1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 XC90-in-Red
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volvooh
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Post by volvooh »

Well it appears I am the culprit. I pulled the climate control from my V70 and installed it in the S70. Climate Control fired right up. Plus, when I removed the climate control from the S70, it smell like cleaner...apparently it leaked down onto the climate control unit. I am going to give it a few days to dry out, but I have a feeling I am going to be purchasing a new unit.

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abscate
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Post by abscate »

I did forget to say... Stop spraying crap into your vents, too.
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 XC90-in-Red
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obayha
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Post by obayha »

abscate wrote:I did forget to say... Stop spraying crap into your vents, too.
Is there any way to help rid the A/C system of the smell? My '99 is pretty bad and something needs to be done. The nine year old grandson said my car smells like an old rental car. :roll:
1998 V70 T5 331,000 :( Her last day was on 3 cylinders.
New to me 1999 V70 NA 163,000 Now at 217,000
2006 V70 2.5T in driveway (WIFE'S)
1982 Toyota FJ40 Land Cruiser

volvooh
Posts: 370
Joined: 16 July 2009
Year and Model: '98 S70, '05&'08 V70
Location: OH
Been thanked: 4 times

Post by volvooh »

I would say to spray into the air intakes by the windshield wipers.

obayha
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Post by obayha »

volvooh wrote:I would say to spray into the air intakes by the windshield wipers.
I hope to try that this weekend and see what's up. I'm guessing air on high and a light mist?
1998 V70 T5 331,000 :( Her last day was on 3 cylinders.
New to me 1999 V70 NA 163,000 Now at 217,000
2006 V70 2.5T in driveway (WIFE'S)
1982 Toyota FJ40 Land Cruiser

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dosbricks
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Post by dosbricks »

There should not be any smell. I live in a hot humid coastal climate, and neither car smells. Is your condensation drain backing water up into the evaporator? Do you have a cabin filter installed to prevent dirt and organics from getting into the evaporator housing? If there is a musty odor it's probably coming from around the evaporator--at least that's my experience from owning Fords. FCP sells a charcoal cabin filter that some have reported improved air freshness.
'98 S70, 230k, purchased new in '98
'96 855 GLT, 163k, purchased lightly used in '99
Onceuponatime RIP '69 Shelby GT500 w/7.0 liter

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