Kantdrive Posted April 6, 2017 Share Posted April 6, 2017 99 legacy sus ej25 not running smoothly in gear but idles fine in park or neutral. Replaced the coil wires and plugs no changes I don't want to buy a mass air flow sensor. Before all this I had a cel on for a filler neck leak so I removed the tape and spray foam from around the wheel well (previous owner rust control not me I'm going to just flare them) and now all this could they be now I have a worse filler leak causing misfires and fuel air codes. Any help greatly welcomed thanks Link to comment Share on other sites More sharing options...
Setnev Posted April 6, 2017 Share Posted April 6, 2017 IACV and/or MAF sensor dirty Link to comment Share on other sites More sharing options...
choover1101 Posted April 6, 2017 Share Posted April 6, 2017 What all codes are listed? Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
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