Hey,
My car had just recently started to have a hunting idle.
My tuner decided to richen up the idle via Nistune and bumped the ignition timing electronically from 15deg to 20deg. This smoothed out the roughness of the hunting but it didnt get rid of it.
Ive also noticed that after increasing the ignition timing to 20deg I have a problem with cold start.
When I start the car up in the morning now and leave it to idle (ignition timing 40deg, fluctuates 41/42) I can hear it missing now and the car shuddering each time it happens. Idles remain 900rpm+ but can hear missing until i move off and warm up the car eventually.
Anyone know what the problem could be?
The car was running perfectly before the hunting idle began and richening the idle has just created more problems haha.
Although i cant understand how the rich idle is causing the car to missfire on cold idle?
Ill be cleaning the AAC valve on the weekend, but just wanted to know if there is anything else which might be causing the initial hunting idle?
Thanks