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hello left work and my 940 turbo ran awefull. i got home and pulled codes 322 and 121. bad amm or maf. i thought slam dunk no problem. i bought a new amm and still it runs awefull. the codes are the same. 322 and 121. i followed the faq on the ground point and had proper voltage on terminal 3 about 2.4 volts on my voltmeter. any one else can help me. i am at a stand still. i ahve had bad luck at the volvo dealer. last time they kept my car for a month to diagnose a bad fuel pump but replaced 800.00 of sensors on my car but never diagnosing my fuel pump. it is a great car please help
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