IPD sale XeMODeX - Experts in Volvo Electronics
Did you know? 🤔
Logged in users can get email notification of topic replies Log in or register (free).
Amazon Link Buy anything with this and it helps MVS!

1996 850 Wagon with ECC: I think I know the answer to this...

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

s2zeller
Posts: 159
Joined: Fri May 15, 2009 5:17 am
Year and Model: '13 S60; '15.5 XC60
Location: Madison, WI
Has thanked: 0
Been thanked: 0
United States of America
s2zeller

1996 850 Wagon with ECC: I think I know the answer to this...

Post by s2zeller » Wed May 25, 2016 8:49 pm

I've posted off and on over the years about problems I've been having with the Electronic Climate Control in my 850 GLT. After cleaning out the dials in the ECC dash unit, it was working flawlessly for about 6 months.

Now it is blowing different temperature air out the left and right sides as well as blowing hot when set to 64 F and cold when set to 84 F.

I'm taking an (un)educated guess that it just might be the ECC dash unit has finally cashed in. :shock:

That said, I'd gladly entertain any other possibilities on this issue.

I haven't pulled codes lately (even tho' the AC and REC lights are blinking), but as I recall the last set were pretty generic. I can do that if any thinks it will change the diagnosis.

scot850
Posts: 5934
Joined: Mon Apr 05, 2010 2:46 pm
Year and Model: 2000 V70 R
Location: Calgary, Alberta, Canada
Has thanked: 12 times
Been thanked: 211 times
Canada
scot850

Re: 1996 850 Wagon with ECC: I think I know the answer to this...

Post by scot850 » Wed May 25, 2016 10:57 pm

Remove and clean the 2 cabin temp sensors behind the grab handles above the front doors. When the clog up or fail they will give you strange behaviour like this.

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

s2zeller
Posts: 159
Joined: Fri May 15, 2009 5:17 am
Year and Model: '13 S60; '15.5 XC60
Location: Madison, WI
Has thanked: 0
Been thanked: 0
United States of America
s2zeller

Re: 1996 850 Wagon with ECC: I think I know the answer to this...

Post by s2zeller » Thu May 26, 2016 6:55 am

I'll give those a check, but they were cleaned a couple years (at most) ago.

User avatar
bmdubya1198
Posts: 3972
Joined: Tue Dec 30, 2014 10:45 am
Year and Model: 2K V70R M56
Location: Charlotte, NC
Has thanked: 44 times
Been thanked: 154 times
United States of America
bmdubya1198

Re: 1996 850 Wagon with ECC: I think I know the answer to this...

Post by bmdubya1198 » Thu May 26, 2016 7:39 am

That's probably exactly what the codes would tell you (cabin temp. sensors). It still wouldn't hurt to check if you have the means to do so.
2000 V70R Venetian Red/Charcoal M56 Swapped 195k
2003 S60 2.4T Silver/Black 112k
2007 XC90 V8 AWD Sport Titanium Grey/Black 166k
1991 944 Turbo Dark Green/Beige 173k
1992 245 Base White/Beige 249k
2006 BMW 330i
1999 BMW 528i
Sold-
2000 S70 GLT Mystic Silver/Taupe 253k
1993 944 Base Beige/Beige 221k
1998 V70 GLT Black/Beige 199k
1998 S90- Silver/Gray 207k
1995 850 GLT Tropic Green... crushed
2001 S60 2.4T Black/Black 230k
1988 744 Turbo M46 Beige Metallic/Beige 188k

s2zeller
Posts: 159
Joined: Fri May 15, 2009 5:17 am
Year and Model: '13 S60; '15.5 XC60
Location: Madison, WI
Has thanked: 0
Been thanked: 0
United States of America
s2zeller

Re: 1996 850 Wagon with ECC: I think I know the answer to this...

Post by s2zeller » Thu May 26, 2016 11:22 am

I'll try to check codes and sensors on the weekend and report back... maybe I'll be surprised.

Post Reply
  • Similar Topics
    Replies
    Views
    Last post