2001 Taurus 3.0 2v
Hai all, I have 2001 bull with the 12 valve Vulcan engine. In the past couple of weeks I noticed a little bit of engine surging under light acceleration or neutral throttle. It would rev up 100-200 rpms and then drop and the car would slow when the rpms dropped. It would especially do this uphill and at highway speeds. It would be perfectly fine under heavy acceleration. Just this week I got a scan tool and decided to graph my fuel trims and rpms on my normal drive to work. (about 25-30 minutes of highway) It didn’t surge, but this time when I let off the gas the rpms went from 2,300 to 2k and it held the car back. I would accelerate again and it was just fine. When I got to work I looked at the graph and around that time the computer said my coolant temp was -22 degrees and my engine was at 8,300 rpms. The long term fuel trim for bank 2 hit 49.2% at that time too. Long term fuel for bank 1 was from 0-1.6% the entire time. I’ve done some poking around and all of my fuses look fine, the body grounds are clean and are grounding. The ground on the transaxle has a bunch of stuff on it but it reads 12 Volts when tested. I’ll clean it up tonight and see how much joy that gets me. Any other ideas?