Vacuum leak?

bentandbroken

Lackluster
Jan 17, 2007
66
0
0
i wish it was paradise
My car just started surging from ~1200 to 1700rpm at idle. It's the weirdest thing i've ever seen. Because it was idling fine earlier. At first I thought the car was searching for idle because it's colder than it was this afternoon. But once it was up to operating temperature, the problem persisted.

I haven't had time to run a vacuum leak check, but I believe this is what the problem is. Someone told me it might possibly the the AFM, but idk.