If your air flow is low, look for a blocked/dirty heater core.
The 1989 E34 does not have a microfilter.
If your air flow is low, look for a blocked/dirty heater core.
Keith in Scottsdale, AZ
'91 535ia 220K Alpine/Parchment
'89 735il 252K Cirrus/Parchment
'00 740il 124K Oxford/Sand
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