buckubhoy Posted September 6, 2017 Share Posted September 6, 2017 i have recently got a 2.0 non turbo scooby and its idling a bit rough ( this started at the weekend) so i have changed spark plugs, coil pack, air filter and fuel filter still idling a bit rough any help on how to fix this would be greatly appreciated as its my first scooby and dont want to get rid if its an easy fix thanks in advance Quote Link to comment Share on other sites More sharing options...
1 Lucky Texan Posted September 6, 2017 Share Posted September 6, 2017 more details on car please. does it behave the same from cold start as after having warmed-up? Quote Link to comment Share on other sites More sharing options...
idosubaru Posted September 6, 2017 Share Posted September 6, 2017 Clearly can't promise anything but usually this is a simple issue: 1. read the OBD (check engine) codes and post them here. 2. replace the spark plug wires (they should be Subaru, NGK, Magnecor or so other high quality product) 3. clean the idle controller (there's a few different styles but generally you just remove it and blow it out with carb or brake cleaner really good). 4. swap in a used idle controller 5. check the timing components - make sure alignment marks are proper and the belt isn't compromised (failing pulley or tensioner) 6. describe the symptoms better: what is it doing at idle - describe it exactly since we're not there. no stories - just details. what is it doing while driving - does it drive fine? is gas mileage reasonably normal? Quote Link to comment Share on other sites More sharing options...
buckubhoy Posted September 6, 2017 Author Share Posted September 6, 2017 more details on car please. does it behave the same from cold start as after having warmed-up? yes its the same all day Quote Link to comment Share on other sites More sharing options...
buckubhoy Posted September 6, 2017 Author Share Posted September 6, 2017 Clearly can't promise anything but usually this is a simple issue: 1. read the OBD (check engine) codes and post them here. 2. replace the spark plug wires (they should be Subaru, NGK, Magnecor or so other high quality product) 3. clean the idle controller (there's a few different styles but generally you just remove it and blow it out with carb or brake cleaner really good). 4. swap in a used idle controller 5. check the timing components - make sure alignment marks are proper and the belt isn't compromised (failing pulley or tensioner) 6. describe the symptoms better: what is it doing at idle - describe it exactly since we're not there. no stories - just details. what is it doing while driving - does it drive fine? is gas mileage reasonably normal? ok will try this thanks but could you tell me where the idle controller is plz Quote Link to comment Share on other sites More sharing options...
buckubhoy Posted September 6, 2017 Author Share Posted September 6, 2017 Clearly can't promise anything but usually this is a simple issue: 1. read the OBD (check engine) codes and post them here. 2. replace the spark plug wires (they should be Subaru, NGK, Magnecor or so other high quality product) 3. clean the idle controller (there's a few different styles but generally you just remove it and blow it out with carb or brake cleaner really good). 4. swap in a used idle controller 5. check the timing components - make sure alignment marks are proper and the belt isn't compromised (failing pulley or tensioner) 6. describe the symptoms better: what is it doing at idle - describe it exactly since we're not there. no stories - just details. what is it doing while driving - does it drive fine? is gas mileage reasonably normal? the car drives fine for a short time then starts holding back and then fine again mileage is only 84k miles which i thought was pretty ok for a 17 yr old car Quote Link to comment Share on other sites More sharing options...
thook44 Posted September 6, 2017 Share Posted September 6, 2017 (edited) how recently did you get it? did you stop anywhere out of the ordinary for fuel? so, not only is the idle funky, but driveability is suffering, too? Edited September 6, 2017 by thook44 Quote Link to comment Share on other sites More sharing options...
1 Lucky Texan Posted September 7, 2017 Share Posted September 7, 2017 can you scan the ECU for trouble codes? Quote Link to comment Share on other sites More sharing options...
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