Posted 17 November 2011 - 06:17 PM
So, last night driving home from Boston, I noticed there was no fan blowing the heat into the car. Here is what I found:
If the ECC is set to Full hot or cold, fan blows correctly on either auto or any fan speed setting and any position setting.
The ECC DOES NOT blow if the temp is set to anything else, no matter which fan speed or position is set, with one exception.
The one exception is that it bows properly if set to defrost (turns ac on)
Posted 18 November 2011 - 01:17 AM
A quick shot of canned air usually clears that.
Are the ECC lights blinking on start up?
Posted 18 November 2011 - 02:56 AM
Posted 18 November 2011 - 03:12 AM
the ECC blinkies for 20 seconds at start up.
But AFAIK, you need something Volvo specific
for actual diagnostic trouble codes.
As for the additional temp sensor, it's a little buried.
There's another one in the duct near the blower.
It's just below the power stage, next to the motor.
Look for "7/11" in this component locations PDF:
98 x70 ECC Component locations- both.pdf 370.25K 14 downloads
FWIW, here are the diagram pages, too:
98 x70 ECC Diagrams- both.pdf 522.29K 10 downloads
Posted 19 November 2011 - 01:22 AM
Posted 07 December 2011 - 02:21 PM
Blower settings set to full fan, 72deg
speed = 20mph blower blows at full
speed = 25mph blower blows at half speed
speed = 30mph blower is off
I can speed up and slowdown the car to inversly slowdown / speed up the blower.
Anyone seen anything like this? There are no error codes. I have VIDA would the dice tool allow me to view the output from the blower system?
Posted 07 December 2011 - 08:13 PM
I'd start looking at your voltage while driving.
You could start easy by just hooking your meter up to the
cig lighter and keeping an eye on your levels real time.
Posted 07 December 2011 - 08:58 PM
Posted 07 December 2011 - 11:00 PM
A volt drop test to check out battery, alternator, cables, connections
and all that stuff as a system is probably what you want to look at.
The battery and alternator can be individually tested in the car.
Posted 08 December 2011 - 08:20 PM
Any other suggestions?
Posted 10 December 2011 - 03:07 PM
Posted 10 December 2011 - 06:01 PM
I guess these cars really are getting old.