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ECC problems.. 2000- Mod. new type. v70 2.4T

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

This topic is in the MVS Volvo Repair Database » Now Through Monday -- IPD's Summer Sale!
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peltz
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Joined: 12 July 2007
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ECC problems.. 2000- Mod. new type. v70 2.4T

Post by peltz »

Hey
(sorry for my english)

My ECC is not working as it should. When in auto it will not regulate, blows cold air on max on all degrees unless you put it all the way to the right. Then suddenly it gets warm. But it is on full blast all the time.

What could be the problem? It is the new type v70.

Ozark Lee
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Post by Ozark Lee »

It sounds like a problem either with the cabin temperature sensor or the air duct temperature sensor. Unfortunately you will need to get the system scaned by the dealer or another shop that has a Volvo Scan Tool in order to find out for sure.

Do the REC and AC lights flash when you first turn it on?

...Lee
'94 850 N/A 5 speed
'96 Platinum Edition Turbo
Previous:
1999 V70XC - Nautic Blue - Totaled while parked.
1999 V70XC - RIP - Wrecked Parts Car.
1998 S70 T5
1996 850 N/A
1989 740 GLT
1986 740 GLT
1972 142 Grand Luxe

peltz
Posts: 5
Joined: 12 July 2007
Year and Model:
Location:

Post by peltz »

hey

no flashing lights. Is the cabin temperature sensor in the panel where you change the temerature.

thx for taking time to help me :)

Ozark Lee
MVS Moderator
Posts: 14798
Joined: 7 September 2006
Year and Model: Many Volvos
Location: USA Midwest
Has thanked: 4 times
Been thanked: 75 times

Post by Ozark Lee »

Unfortunately I don't have any hands on experience with V-70s or S-70s. Normally I could look it up in VADIS for you but I am at my vacation cabin and I don't have it available to me.

Many things are the same on the 70 series and the 850s but others are different. On an 850 the cabin temperature sensors are located behind the grab bars, just above the front doors. If you have a small vent in that location then that is in fact the cabin temp sensor. On the 850 the duct temperature sensors are located in the center vents, one on each side. Each side of the car has its own set of both the cabin and duct sensors.

Hopefully someone with more 70 series experience than I will jump and and clarify their locations.

The only other thing that comes to mind on the problem would be a sticking damper door.

Is the problem the same on both sides of the car, drivers side and passengers side, or is it limited to one side of the car?

...Lee
'94 850 N/A 5 speed
'96 Platinum Edition Turbo
Previous:
1999 V70XC - Nautic Blue - Totaled while parked.
1999 V70XC - RIP - Wrecked Parts Car.
1998 S70 T5
1996 850 N/A
1989 740 GLT
1986 740 GLT
1972 142 Grand Luxe

peltz
Posts: 5
Joined: 12 July 2007
Year and Model:
Location:

Post by peltz »

hey

It is the same on both sides of the car.
Think i will try a dealer with Volvo Scan Tool on monday. Find out if it`s something expensive.

Thx for all the help :)

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