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Screwy Tack readings and mis-firing.
Recently When I start up the rocco one of four things happen...
1. Starts up fine...
2. Tach jumps to ~2000 and engine misfires
3. Tach jumps to ~8000 and engine really misfires
4. Does not start, just cranks over....
note in situations 2&3 the tach reading does not represent the actual motor
revs... more like a really lumpy idle.
My thoughts are:
1. Bad Coil
2. Bad wires
3. bad ignition control module
4. combination of all three......
HELP!
Jason Adams
Fahrvergnugen Forever! ;)
84 rocco 16v
93 320i
98 Z71