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…
Below is a handy SAS diagram for Volvos with the “white” block 5-cyl engines, namely some 1996 and all 1997 850 models, S70, XC70 and V70 up to year 2000, and C70 up to year 2004.
IVIUSTANG » Yes, this does get rid of the P0410 code completely. erikv11 » The ECU doesn’t check the pump directly, it checks the relay and the solenoid (which you leave in place in this procedure), and it checks the O2 sensor voltage to see if it drops as occurs when the air pump is […]
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?
The whole job took about an hour, skinned one knuckle, didn’t break anything new and I only used about half the cuss words I know…
If the air pump has failed in your Volvo 850, 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…