Flight Testing:

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April 26th, 2008 Flight Hours: .8 Total Hours: 6.2
4th Flight: Squawks: Correction:
Upon application of take-off power the check engine light came on indicating a P0123 TPS circuit High output. I love my OBDII monitor. It showed me this immediately. With the engine developing full power and plenty of runway I decided to lift-off and see how this affected performance. During a climb from pattern to 4000' above the airport at 1300fpm temps stabilized at 195 deg f and the TPS didn't seem to affect anything.

Once at altitude I cleared the code and refrained from applying full power for the duration of the trip. This kept the TPS code away.

After a few minutes, with everything stable, I left the airport for a short run to Newberg VOR (UBG) and back. I set the plane at 150kts and monitored the engine instruments. The temps again stabilized at around 187 deg f and the plane performed smoothly.

The flight back was uneventful.

Upon landing I found that a small amount of gearbox oil had run down the belly of the plane.

TPS code P0123 circuit high

I cleaned the oil off and removed 1.5ozs from the overflow to attempt to keep this from happening again.

This reduced the total gear oil to 20oz.

I also set the TPS to trigger the 5v for wide-open-throttle at precisely the time the throttle reached WOT. This equates to .63v at idle. (Note: I have the idle stop set for 1260rpm.)

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