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V70 AWD Air Pump,Check Valve,Ox;ygen Sensors V70-XC70 1998

posted by  jrouse on  Mon Apr 22 11:26 CST 2002
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Last Monday I was on the road and my check engine light came on. Called Volvo and was told to fiddle with gas cap and see what happens. Did this and no change. Drove home and brought the car to dealer on Cape Cod Friday morning.

Bad air pump, two oxygen sensors and check valve. All caused by check valve failure which allowed exhaust gas to enter air pump, intake manifold, etc.

I purchased the car last August from Lee Volvo in Wellesley MA. with 47000 miles. The car was a certified used car with warranty coverage until 74000 miles.

However, the dealer on the cape said that none of the parts listed above or the labor were covered under the warranty. The result: $1700 out of pocket. Have I been had?







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    V70 AWD Air Pump,Check Valve,Ox;ygen Sensors V70-XC70 1998

    posted by  someone claiming to be Esch on  Tue Apr 23 03:48 CST 2002 [RELATED]

    If you have the same VIP 2/24 extended warranty that I have (common on cert. used Volvos)...that work should have been covered.








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      V70 AWD Air Pump,Check Valve,Ox;ygen Sensors V70-XC70 1998

      posted by  jrouse on  Tue Apr 23 05:39 CST 2002
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      Thank you for your response. When I purchased the car at Lee Volvo in Wellesley MA, I was told that the car was a certified car and that I would have warranty coverage up to 74000 miles. The actual written warranty, under the engine section, makes no mention of any of the components which had to be replaced and the way the wording is constructed, anything not specifically mentioned is not covered.

      Given the long history of air pump and check valve problems reported in this forum going back years, Volvo has a very good reason for not wanting to cover these parts.

      Any thoughts you have are welcome.







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    Whoa.. V70-XC70 1998

    posted by  someone claiming to be Wayne on  Tue Apr 23 00:11 CST 2002 [RELATED]

    IMHO, they're using both barrels as there's no way that all those parts are bad, probably a junior, inexperienced tech is telling their service writer that.
    Now........it's possible that if there's a 448 code (with 442 or 446) that the air pump is siezed and if so, it'll need a new air pump and check valve BUT when an air pump fails, it's not unusual to get an O2 sensor code at the same time. I've not yet seen where both O2 sensors fail at the same time (especially with an air pump) and if there are 435 and 436 codes together at the same time, it's usually caused by vacuum hose leak, not 2 bad O2s.

    If you have 442 and 446 codes for the air pump yet the pump still works in test mode and isn't noisy, then you can get by with just a check valve only.

    So.....I'd ask for more specifics but there's no way I'd have all those parts replaced at once. I can see the air pump and check valve (if the air pumps siezed and/or noisy) but I would then just ask to have the codes cleared (which has to be done anyway) and skip the O2 sensors at this time. Wait and see if the O2 sensor codes re-appear but do make certain that all vacuum hoses (lines) are OK too.








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      Whoa.. V70-XC70 1998

      posted by  jrouse on  Tue Apr 23 03:43 CST 2002
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      Thanks for your reply. The original symptoms were as follows: Reduction in mileage, reduction in power, smoking out exhaust, missing, very strong smell.

      I concluded that the car was running extremely rich. There was no air pump noise as has been described by many others. The car still ran ok at high speed but with less acceleration. (I had to get home from a trip. )

      When I took the car in to the Volvo dealer in Hyannis MA, the check engine light was not on, but they said they found 15 codes. I am trying to get a list of these, but do not have it yet.

      I have all of the parts that they replaced which included the air pump, check valve, 2 oxygen sensors and a barometric pressure sensor. Is there an objective testing place that can see if these parts are really faulty?

      Again, thanks for your help.








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        Whoa.. V70-XC70 1998

        posted by  someone claiming to be Wayne on  Tue Apr 23 12:52 CST 2002 [RELATED]

        Hmmmm, that sounds unusual to me as I've not seen where those parts have caused all that but being that the work has already been done now, you'll just have to assume that they were correct at this point.
        As for testing those old parts, sorry but there's really no easy way. O2 sensors are tested while still on the car through the ECU so short of re-installing them and using a very good scan tool, there's no other way and doing all that would be rediculous now.
        You could run the air pump by applying voltage to it just to see if the motor works and isn't noisy but that's about it.








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        Whoa.. V70-XC70 1998

        posted by  ice9 on  Tue Apr 23 05:56 CST 2002
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        Jrouse same issues here: smoking, strong smell.

        I purchased the air pump and check valve from volvoparts.com. Air pump was 240.00, valve was 70.00. I changed the pump, valve and hose( 20.00 ) myself. Car still smoked after repair. Took it to Volvo dealer, diagnosed as front O2 sensor, 350.00 parts/labor. Volvoparts.com wanted around 200.00 I let the dealer change it after 3 hours of contemplating. So total is around 680.00.
        Also the dealer wanted 660.00 for the airpump change. Took me 1 1/2 hrs.

        Good Luck ... we're gonna need it







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    V70 AWD Air Pump,Check Valve,Ox;ygen Sensors V70-XC70 1998

    posted by  davidm on  Mon Apr 22 15:34 CST 2002
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    You probably could have done better. Don't know where in Mass. you live, but here on the North Shore, Precision Volvo (978.948.7778) has developed a cult following of Volvo owners who like great service, fantastic workmanship and fair prices. I'm one of the worshippers!
    --
    (98 S70 T5SE misc mods, mostly lighting) (92 940GLE)







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