The CVVT job — burn off environmentally bad gasses produced in the first minute or so from a cold engine. CVVT technology superseded fussy air pumps after it matured enough to be a dependable component of passenger cars. See Wikipedia’s CVVT page. See MVS’s how to change the CVVT hub on P2 Volvos. See all […]
My airpump has started to sound like a vacuum grinding up a cat. Of course, the noise only lasts a minute or so, then it stops and all is well. I guess I have 2 questions:
1. What does the air pump do?
I ask this because the car runs no different before the thing kicks in and no different after it shuts off.
2. If nothing changes regardless of this thing being on or off, do I actually need it? Can is be simply unplugged and ignored?
Some people may gasp and sputter at that last statement, this is an honest question looking for a direct answer…
If the air pump has failed in your Volvo, there is an alternative to buying an expensive new or used Volvo air pump: you can buy a rebuilt or used VW air pump and convert it for use in your Volvo.
A few questions arise when considering this course: Will the VW pump work right? How much will I save? Which VW pump part number(s) will work? How hard is it to convert? How do you do the conversion process?