I have a 2010 Liberty 2.5i Premium (Sat) sedan.
The Liberty used to stall when idling prior to torque converter refurbishment. 3 months have passed and I am noticing that when idling with the A/C on there will be regular times that the revs will drop down and cause a small shudder (pre-stall) which lasts for 2-5secs then the engine will increase idling revs to normal range with no shudder. This will repeat every 15-25secs.
What causes this? Is this torque converter-related?
Is there a way to increase idling revs via transmission computer system?
A Subaru technician informed me that this issue can't be solved.