Matthew Runals
Active Member
Alright, sometimes when I start the ST the engine shudders a little and the rpms fluctuates up and down until the engines warms up and settles at 1rpm. I thought it could be the IAC valve so I cleaned it but the problem still persists. Today I was driving around 40 mph and when I took my foot off the petal the rpms needle still rested around the 2 but the engine didn't seem to be running that high. It finally settled back down to the 1 rpm mark only after I shifted to neutral and let the truck slow down. Any thoughts for the shudder?
