Re: Intermittent surge?
One of the first things that come to mind is the throttle body unit. It may getting some kind of short thus robbing your motor of power it would normally get.
Another possibility is the accelerator pedal unit. Its that sensor that detects how far your foot is on the pedal. If this is sending the wrong signal to the ECM, you could also be losing power that way. These happened to me a long time ago and I had to have them replaced.
How about the MAF? Is it clean inside? Maybe a spray of MAF cleaner followed up with a throttle body cleaner on the other end might help with these possible issues.
Just my .02............
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