After yesterday's P0128 and P0155, this morning I developed a P1353. I looked it up, and this came up:
- Faulty Spark Plug
- Faulty Ignition Coil
- Intake vacuum leak
- Faulty Camshaft Position Sensor
- Ignition Coil harness is open or shorted
- Ignition Coil circuit poor electrical connection

Symptoms: Engine vibration at idle, lessened if I gave it some gas. Also made a sort of thumping noise, and I could feel vibration if I put my hand on the crankcase. When I got home, I tried a parked version of the Italian Tuneup, revving it to 4500 rpm a few times then holding it at 2000,2500, and 3000 a bit. The shaking stopped.

Will be taking it in tomorrow to put in the new tstat. Mechanic thinks that will clear the P0155 as well as the P0128, but now I'm worried.

Please advise... feeling the bmw owner paranoia now.

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Motivation can change what you do, but inspiration can change who you are.
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2003 BMW X5 3.0i, Black Sapphire, 287,423 km and kicking!
www.sam-medina.com
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