'97 stock Boxster (no engine mods, no K&N, etc., 70,000 miles, up until this year 100% dealer-serviced) has a problem with idling -- after normal starting (no foot on the accelerator), the engine dies, but will run if I keep a light foot on the accelerator to keep the revs up while starting. No CEL when revs are maintained to keep engine running.
I detailed the car over 2 weekends. On the first weekend, I partially lifted the rear convertible deck to detail beneath it, left the key in the ignition, then called it quits and left the car in the garage until the next weekend. On the next Saturday, I tried starting the car, but it appeared the battery had drained. I pulled the battery and trotted over to Pep Boys, where they ran a full load test, passed and charged the battery back up. Re-installed the battery, reset the radio, and thought my problems were over. That's when the engine began to die at idle.
My ODB II reader found only one code reported - P0102. I pulled the MAF -- it was clean with the sensor wire very shiny (was replaced at 50,000 miles by the previous owner, due to a CEL). I tried unplugging the MAF as found in other posts, but no improvement. I disconnected the battery for 2-3 mins, then reconnected, but again, no improvement.
This is the first time I have experienced this problem.
Purchased in 2002 from 2nd owner with 48,000 miles. 100% dealer serviced.
The MAF was replaced at 47,000 by the previous owner, due to a CEL.
The secondary Air Shutoff Valve was replaced at 68,000 miles, again due to CEL, just 2,000 miles ago.
Potential Next Steps:
a ) explore throttle body for function and blockage, clean, etc.
b ) further test O2 sensors, as they seem to influence the MAF.
c ) find a good independent Porsche shop with the Porsche ODB reader to get a better idea of what's going on.
d ) find enlightenment on this super forum for advice
Thx in advance,
Edited by gwegryn, October 14, 2007 - 04:07 AM.