Idle rough/afr all over the place.
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Newbie
Joined: Oct 2018
Posts: 11
Likes: 1
From: California
Idle rough/afr all over the place.
Hey guys !
Having a little bit of a issue with the evo as of now. At idle the car will be between 900 and 2000rpm! It doesn’t jump but it moves slowly up and down I’d say atleast once every 2-3 minutes it will do that. My afr is all over the place as well ranging from 12-17. My initial thought was injectors or spark plugs but I’m also thinking MAF or IAC. Honestly I’m really not sure the car is throwing multiple things at me, at once. Just would like to know what you guys think and what the best course of action would be. I can post a vid tmrw but currently just stressing out about it. Also worthy mention. The car is built has kelford 272 cams,1200 cc injectors Walbro 450 fuel pump, ngk laser iridium spark plugs,synapse blow off valve,spoolin up coils. And is on e85 Let me know if I need to go more in depth on what’s done to it. Thanks everyone!
Having a little bit of a issue with the evo as of now. At idle the car will be between 900 and 2000rpm! It doesn’t jump but it moves slowly up and down I’d say atleast once every 2-3 minutes it will do that. My afr is all over the place as well ranging from 12-17. My initial thought was injectors or spark plugs but I’m also thinking MAF or IAC. Honestly I’m really not sure the car is throwing multiple things at me, at once. Just would like to know what you guys think and what the best course of action would be. I can post a vid tmrw but currently just stressing out about it. Also worthy mention. The car is built has kelford 272 cams,1200 cc injectors Walbro 450 fuel pump, ngk laser iridium spark plugs,synapse blow off valve,spoolin up coils. And is on e85 Let me know if I need to go more in depth on what’s done to it. Thanks everyone!
Last edited by Willhockey62; Oct 27, 2018 at 11:12 PM. Reason: Grammatical errors
EvoM Community Team Leader
Joined: Aug 2005
Posts: 5,690
Likes: 708
From: West Coast
First thing is do a boost leak test. That will find any blown off hoses or leaks etc. Then do some logging and post them up so we can help diagnose. Just from the description though sounds like your ISC(iac) might be on it's way out
