If you have the 12 pin datalink connector, you should be able to use a jumper wire between A & B terminals at the datalink connector. Then turn the key just till the dash lites come on, no further, no crank, the mil starts flashing, you count the flashes to get the codes. Your looking for two digit codes. Each code may flash three times before moving to the next code. A code 12 can just mean diagnostic mode, I don't pay much attention to that code. The datalink connector is below.
Tap on the maf sensor see if any idle effect? I used to have an instructor, talking about engine sensors, he said when in doubt, take it out, what he meant was, unplug the sensor, see if any effect on the idle. I've had people say that unplugging sensors to see the effect, is poor diagnostics, that may be, but, if you have nothing else? I don't plug/unplug anything unless the key is off.
Wednesday, March 9th, 2011 AT 6:47 PM