Idle Surge

[allblackcars]

My car has been sitting for a couple months... Recharged the battery and went for some fresh gas... I noticed a surge during idle like a car with a large cam. I figured it would smooth out after driving but it didn't. I have a F.A.S.T engine management system. Any ideas what could cause this? Also, I couldn't remember if the last time I got gas, was it non-ethanol or not.


Sent from my iPhone using Tapatalk

 

[allblackcars]

Also noticed that when I turn on the air conditioner it's more pronounced up and down idle..
The car almost wants to stall..


Sent from my iPhone using Tapatalk

 

[dank GN]

Vacuum leak

 

[michael evans]

Do you still have an IAC valve setup ?

Needs more fuel at idle ?

 

[TurboBuRick]

Without seeing data from the fast, its a shot in the dark.

Hook up to the laptop and check the map signal and ve table. You may just need to adjust fuel in few cells.

 

[allblackcars]

Thanks for the reply guys! I will check those suggestions and report back!


Sent from my iPhone using Tapatalk

 

[allblackcars]

Update: idle table had to be adjusted. Xfi issue resolved. And also a vacuum leak on the intake plenum...



Sent from my iPhone using Tapatalk