[Shotimes] Codes, Codes and More Codes

[Ron Childs]

The BOO is no big deal. You need to step on the brake during the test, (Brake On
Off). As far as the knock sensor goes, you may want to try the test again with the
motor very warm. I believe the test will advance the timing to force a knock. If the
engine is too cold, that may not happen. I can't see either causing a driveability
issue.

BTW, everyone, I'm baaaack. (Try to contain your entheusiasm :-)  I had a little
computer trouble that I am working around.

-Ron Childs   '91


--- Jim and Debbie Leyden <jndleyden@mindspring.com> wrote:
> The wife's SHO has been presenting us with some drivability issues.  Here is
> what it is:
> '93 MTX, 262,000 Miles, Superchip, Milled Heads that have been Ported and
> Polished, FPS Valve Springs, Performance Tune, Fidanza Flywheel w/Stock
> Clutch.
> 
> Lately the engine has been stalling at lights and idling at around 800 RPM.
> I ran both tests and here is what I got:
> 
> KOEO
> 511 (Super Chip)
> 172 (Rear HEGO Sensor)
> 542 (Fuel Pump Secondary Failure)
> 
> KOER
> 172 (Rear HEGO Sensor)
> 225 (Knock Not Sensed)
> 536 (BOO Failure)
> 
> Cylinder Balance says #4 Cylinder
> 
> There is no oil in any of the plug wells.
> 
> I know I have to replace the rear HEGO sensor but what about the knock not
> sensed and the BOO?
> 
> Thanks,
> Jim
> 
> 
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