HELP! cutting out under light throttle
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
You don't have a cuttout problem that's when the motor shuts off and you have to pull over and reastart it. You have a lean stumble which is confirmed by your FPR test, when vacuum is removed from the FPR fuel pressure is raised and the engine gets more fuel and the stumble goes away. Possible causes are a stuck open or malfunctioning EGR.. you have an EGR code so look into that. Other possible causes are cracked exhaust manifolds or a cracked or broken smog(air injection) tube or valve.
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Senior User
Joined: Jun 2010
Posts: 408
Likes: 0
From: Curwensville,PA
Thanks conaski! i guess i used cutout as i didn't know what else to call it. I kept saying to myself that i thought it was running lean. i will look into EGR i do have that code. how do i confirm it is malfunctioning or staying open??
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