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Q: have volvo s40 rough idle start car rpm drops to 500 and then seems to correct on 2003 Volvo S40

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
sometimes stalls sometimes corrects itself getting code p0101 and p0326 have cleaned maf changed iac and map new iridium spark plugs any suggestions?fuel press 40psi
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