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Discussion Starter #1 (Edited)
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.
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