My engine is surging when under load at part throttle under 2k rpms. It cruises fine at low rpms and is smooth if underload at WOT under 2k rpms or once I get about 2k.
I've cleaned the MAF and IAC, and replaced the DPFE. The wires are good, and the plugs and coil pack have less than 20k miles on them. I unplugged the MAF, and it made no differece. No code is being thrown, which is why I'm having such a hard time figuring this one out.
Anyone have any ideas? Currently, I'm trying to decide whether to take it to a mechanic or just keep throwing parts at it.
*Before I cleaned the IAC and MAF, the engine had a very slight miss at idle. That has now cleared up.
2001 Mineral Gray V6 Mustang
1999 Hugger Orange Z28
13.2 @ 108.7 (KBDD SFCs & Cutout)
Last edited by Z28Colt; 01-13-2007 at 02:53 PM.