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2001 GMC Yukon XL 1500 Question: Can the failure of the mass air flow sensor cause the catalytic converter to go out?

 

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Visitor, Lenexa, KS, July 26, 2010, 14:08

check engine light is on. starts flashing at above 55mph using a/c or cruise control.
dealership says need to replace catalytic converter and mass air flow sensor. Can the failure of the mass air flow sensor cause the catalytic converter to need replacement? Is $1400 reasonable for these repair works?

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    Pvt-Public July 26, 2010, 15:18
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     Master

    The short answer is yes. But $1400 is way too much. I would try replacing the mass air flow unit, clear the codes and run the truck, if you get lucky maybe the light won't come back on. In any case I would look for an independent shop to use instead of the dealer.

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    Visitor, September 09, 2010, 18:43

    why dont you DIY save you bucks

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  • Answer #2

    Valleyautotech July 26, 2010, 15:58
     Master

    I agree with Pvt-Public maybe it will clear the code once the mass airflow sensor is replaced but if not, you can view Catalytic replacement prices here www.repairpal.com/estimator

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  • Answer #3

    Visitor, September 09, 2010, 18:50

    i have mitsubishi eclipse 2001 v6, my car could not run over 40mph it hard to start. could not press gas pedal rapitly. repair shop said that i need to replace MAF sensor
    it cost me $612.00 i go online (ebay) got it only $100.00. first you have to know what is wrong with your car

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