[Casper]

Common problem.... yes, i've searched around, but my symptoms seem to be a wee bit different...

I get the somewhat typical stumble/feels like a misfire after each shift... usually in the low 2k's of the powerband. Started out of nowhere during a recent road trip.

The thing is, its intermittent. I can drive the car for sometimes a half hour before it starts, sometimes only 15 minutes. Only happens when the engine is warm. Once I turn it off and the engine is cool again, everything goes back to normal. The (somewhat useless) temp gauge shows nothing, and I did a full coolant flush about a month ago. I've also:

- Tried both DPFE workarounds. Also tried to just block off the EGR altogether, and tried unplugging the DPFE itself. No change.

- Replaced the gasket on my IAC, as my brother didn't do it right after my manifold swap a couple of months ago. Also tried replacing it with a spare I have.

- Double checked for any vacuum leaks, but I can't find anything.

- Plug wires are all on tight. Haven't pulled any plugs yet, but i'm thinking its something electrical due to it just starting in at random

- Cleaned MAF

- TPS was replaced just over a month ago

- About to change the fuel filter (needs to be done anyways)

And yes, I DID re-set the ECU (unplug batter for a half hour) after trying each thing above. Still no luck.

At this point, i'm running out of thoughts. Only things I can think of are that the coil is on its way out, but not there yet, or might be an O2 problem. I'm not getting a CEL or any codes (have a code reader), which makes it that much more confusing.

Anything else I should be checking for? All of my mods are in my signature....