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96 850GLT dash vents ECC

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

jerryb1961
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96 850GLT dash vents ECC

Post by jerryb1961 » Sun Jul 21, 2019 12:07 pm

Hi folks.... how big a deal is it to just manually set the vents to either cooling or heating and bypass the ECC's shunts & thermometers? My left side vents are putting out blisteringly hot air, while the ones on the right are outputting cool air. The blower and the AC work fine, but there something wrong with how the air's being routed. I'd just as soon set things to have all air blow cool until the winter, then manually set all of them to blow warm. I closed the two leftmost vents withe the knob, but that increased the hot air flow to the left-center one. I put some tape over that one but enough still leaks out to make the right-center one blow less-than-cold.

I'm already afraid this is not something I can do myself on a Sunday afternoon. The alternative is to just roll the windows down and cut the who system off. I just shelled out $350 to have the heater core replaced. TIA..



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Re: 96 850GLT dash vents ECC

Post by Chuck W » Sun Jul 21, 2019 4:07 pm

Read THIS

There are also a couple threads on this forum on making your own DIY code reader.



Klausc
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Re: 96 850GLT dash vents ECC

Post by Klausc » Sun Jul 21, 2019 6:35 pm

And this: viewtopic.php?f=37&t=60660

Without knowing what the codes are, you are not going to fix it.
And it is pin 6, not 5, that is for the ECC.


Klaus
If I had a larger garage, I could have more Volvos.

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bmdubya1198
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Re: 96 850GLT dash vents ECC

Post by bmdubya1198 » Sun Jul 21, 2019 7:08 pm

Yup, the best place to start is read the codes. From there, you can at least see what error the ECC has stored. Check the rods on the blend doors and make sure they're attached and moving when you change the temperature.


2000 V70R Venetian Red/Charcoal M56 Swapped 188k
2001 S60 2.4T Black/Black 230k
2003 S60 2.4T Silver/Black 106k
2007 XC90 V8 AWD Sport Titanium Grey/Black 155k
1998 S90- Silver/Gray 207k
Sold-
1998 V70 GLT Black/Beige 193k
1995 850 GLT Tropic Green... crushed
1988 744 Turbo M46 Beige Metallic/Beige 188k- Never should have sold it

Need used parts? PM me!

jerryb1961
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Re: 96 850GLT dash vents ECC

Post by jerryb1961 » Thu Aug 08, 2019 9:02 pm

Mysteriously, the ECC started working again a couple of weeks ago, but (there's always a but, isn't there?) BUT, the motor blew up today. More expensive to fix than what the car's worth.

I'm looking at a 1998 S70 that I will probably buy this weekend



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bmdubya1198
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Re: 96 850GLT dash vents ECC

Post by bmdubya1198 » Thu Aug 08, 2019 10:23 pm

You could get a used motor from a junkyard for likely under $30.

Either way, good luck! I’m sure you’ll enjoy the S70!


2000 V70R Venetian Red/Charcoal M56 Swapped 188k
2001 S60 2.4T Black/Black 230k
2003 S60 2.4T Silver/Black 106k
2007 XC90 V8 AWD Sport Titanium Grey/Black 155k
1998 S90- Silver/Gray 207k
Sold-
1998 V70 GLT Black/Beige 193k
1995 850 GLT Tropic Green... crushed
1988 744 Turbo M46 Beige Metallic/Beige 188k- Never should have sold it

Need used parts? PM me!

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Re: 96 850GLT dash vents ECC

Post by abscate » Fri Aug 09, 2019 3:49 am

These are not cars you can economically run paying for all repairs. Every repair will cost more than the cars residual value ( a flawed way of thinking). Unlike most brands,though, the parts supply chain is strong and competitive , and the DIY info is unparalleled.


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Re: 96 850GLT dash vents ECC

Post by bmdubya1198 » Fri Aug 09, 2019 7:16 am

abscate wrote:
Fri Aug 09, 2019 3:49 am
These are not cars you can economically run paying for all repairs. Every repair will cost more than the cars residual value ( a flawed way of thinking). Unlike most brands,though, the parts supply chain is strong and competitive , and the DIY info is unparalleled.
This, exactly. The intercooler I have coming today cost more than I paid for my car. I don't even want to talk about how much money I have into that thing at this point!


2000 V70R Venetian Red/Charcoal M56 Swapped 188k
2001 S60 2.4T Black/Black 230k
2003 S60 2.4T Silver/Black 106k
2007 XC90 V8 AWD Sport Titanium Grey/Black 155k
1998 S90- Silver/Gray 207k
Sold-
1998 V70 GLT Black/Beige 193k
1995 850 GLT Tropic Green... crushed
1988 744 Turbo M46 Beige Metallic/Beige 188k- Never should have sold it

Need used parts? PM me!

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Re: 96 850GLT dash vents ECC

Post by scot850 » Fri Aug 09, 2019 7:48 pm

I would suggest you are still a long way short of what I have into my 'R'. This is not a competition I want to win though!!

Good Luck.

Neil.


2000 V70 R - still being an endless PITA
2006 XC70
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - New project and test bed - Sold

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bmdubya1198
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Re: 96 850GLT dash vents ECC

Post by bmdubya1198 » Sat Aug 10, 2019 7:38 am

scot850 wrote:
Fri Aug 09, 2019 7:48 pm
I would suggest you are still a long way short of what I have into my 'R'. This is not a competition I want to win though!!

Good Luck.

Neil.
Haha, none of us do!


2000 V70R Venetian Red/Charcoal M56 Swapped 188k
2001 S60 2.4T Black/Black 230k
2003 S60 2.4T Silver/Black 106k
2007 XC90 V8 AWD Sport Titanium Grey/Black 155k
1998 S90- Silver/Gray 207k
Sold-
1998 V70 GLT Black/Beige 193k
1995 850 GLT Tropic Green... crushed
1988 744 Turbo M46 Beige Metallic/Beige 188k- Never should have sold it

Need used parts? PM me!

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