Packed pollen filter
We often come across filthy and clogged pollen filters that are long past their service life. Many motorists don’t appreciate the importance of a clean pollen filter and just regard it as a minor convenience. This is possibly because many vehicles in the past were not fitted with a pollen or cabin filter, so the need of such an item can be deemed not strictly necessary. However, if a climate control system is fitted with a pollen filter, it does need to be replaced at regular intervals because a blocked filter will put a strain on the blower motor.
This 1998 Saab 9-3 was brought in because the owner was concerned that his demister blower was not operating at optimum performance. The pollen filter on this vehicle is not easily accessed and requires the front wiper arms to be removed before lifting out the front plastic scuttle panel. Once this was done and the pollen filter was in plain sight, we could see why the blower was struggling to supply a good blast of air.
The old pollen filter compared to the new – no wonder air was not flowing freely!