I pulled codes the other night. Code 6 (Idle speed control inoperative) and Code 7 (Ignition system failure) To read the detailed codes I built Arthur Dalton's very cool code reading tool this morning. Parts now cost $8 at Radio Shack. With expert coaching, I got code 23 off Pin 8, indicating the resistor boots under the coils are at fault. (Also got codes 3 and 14 off Pin 14, which I'm told could be related to the coils). I am now waiting for parts.

I can't believe how easy the codes are to read!! Thanks again, especially to Arthur.

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TomO
94 E320 Wagon, 170k, totalled in 2006
2002 BMW 525i Wagon, 75k
1991 BMW 318is (two of 'em)