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"Detonation sensor" or "code 34" etc. and you'll find all the info you need and then some. Run the ECU diagnostic first to see if you have any codes. :-)
[ http://www.twinturbo.net/net/viewmsg.aspx?forum=technical&msg_id=1105629 ] Oh, and i misspoke earlier; it's a 1M ohm resistor, as in a 1 Megaohm resistor, 1/2 watt. You can find them at Radio Shack for cheap in a 4-pack The sensor is located at the back of the engine bay, near the middle, just under the cowl. If its not broken off it's mount, it sticks up vertically, mounted to a metal tab, all by itself. Just unplug the Detonation Sensor, and bend the ends of the resistor so it fits snugly into the female connector that feeds back into the main wiring harness. It has to fit snugly, and make a good connection. Clear the codes and go for a drive. If it works, you'll notice an immediate difference. If the problem doesn't come back after driving for a while, then you probably will need to replace your sensor and harness. Replacing it in the stock location is a labor intensive job, so you can relocate the new sensor to a bolt on the upper plenum until you get the chance to put it back in its stock location - on top of the block, under the lower plenum. Again, this is just one possibility, but I had the same symptoms recently. A bad Det sensor makes the NA feel not even worth driving.
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