Hello,
In a E34 525 TDS from 1995, the air blowing from the dashboard is hot on the driver side, but remains cold on the front passenger side.
I scanned through the DIY links list in the parked thread, but did not see that issue listed.
What could be the cause for this issue, is it easy to fix?
Thanks for any guidance, and any links welcome if the issue has already been addressed somewhere
Please clarify:
only dashboard is the problem? Or all points driver side hot/warm air comes and on the passenger side only cold air on all points?
On case only the dash passenger side is the problem, then it could be a broken regulating flap arm, see here http://www.bimmernut.com/forum/showt...passenger-side
on the next pages there are many pics
Shogun tricks and tips for the E32 series are HERE!
Almost certainly a stuck heater valve. The work is easy enough but your choices for the part are: 1. ~$50 repair kits that seem to be a bit tricky to install, 2. ~$40+ aftermarket heater valves of questionable quality, or 3. OE heater valve for the princely sum of $500+.
Other possibilities are: 1. heater valve wiring or control module, 2. clogged heatercore (never seen one clogged only on one side, but I suppose it's possible).
There are heater valves out there now for $60.
demet
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