Previous Post (a few back):

My Air Pump (blower motor) just failed. I observed "check engine" light. Went to local auto parts store & was able to get a free code read (P0410 - 2ndary air injection system fault).

I found instructions at Bay13 to remove the air pump. It was shorted. I connected supply exhaust hoses to the air pump together for the short-term, until I get replacement. My gas mileage has dropped from 22-23 (mostly stop & go) to ~18mpg (sucks!!), but performance is UP (good!).

*****

NEW INFO: >>> When I took pump out, there ws NO water in it! I did check the fuse and relay, both were fine. After taking the pump out (Thanksgiving morning), the "Check Engine" light cleared.

Tuesday after work: about 10 minutes into drive home, the "Check Engine" light comes on. I stop at AutoZone (they have Wiper blades and Mobil-1 for Volvos anyway) and their code reader says same P0410 - Secondary Air Injection System Fault. I guess I need to troubleshoot the components again (minus the removed air pump)?!?!?!?

Any thoughts??

Thanks,

Paul
'98 Silver V70R, Speaker upgrades only.

The Dealer said $800 to fix. Where is this air pump located. I've changed water pumps, Alternators, and have don general tune ups. Is there a procedure to show how to change and what is the complexity.

Thanks,
Ski

I found no water in mine when I repaced it. However, I tried to power it up by placing 12v accross the leads and it sounded like...well really bad. Obviously bearings were gone. Replace the valve near the turbo too; it would seem to be cause of these problems. It's darn near impnossible to get to with a wrench, but can be done.

Paul replace the air pump and the valve that sits atop of the turbo.Moisture is a problem and the pump will only get worse.Also what upgrades did you do to your speakers? Cedric 98V70R AWD. cedkimbran@aol.com

Mine did the exact same thing.
Check engine light...P0410 code.
Removed air pump and checked....no water but it was shorted.
Check engine light reset since battery was out to remove the pump.
Ran with no pump while waiting for replacement from internet order.
Check engine light re-appeared, code P0410 with no pump installed.
Replaced pump and check valve and check engine light has not re-appeared since (2 months)
Mileage and performance is better with new pump.

Jeff

Where did you order the pump from and what did you pay?

I forget the exact web site....one of the generic car part sites of which there are hundreds that are linked to various parts distributors. The parts actually shipped from and outfit called Bob Byers' Ravenna Volvo in Seattle. Pump cost $263.50 and the check valve was $82.55.

Those are the approx prices that I obtained after a number of calls to "1-800" & internet places. The place that came up with those prices was in Boston area (I think).

I noticed a DROP in MPG, but a boost in performance withOUT the Air Pump.

PW