[Shotimes] Codes, Codes and More Codes

[Kevin & Cheryl Airth]

The 225 means you did not floor the gas pedal hard enough during the goose
test. The 536 BOO code means you forgot to step on the brake at the correct
time during the test. The 172 code is for the rear cylinder bank O2 sensor
but I would have thought it would be the same bank as cylinder 4(Front
bank)?
 I would clear the codes first and see what returns. Can you swap the IAB
with another SHO?
 Last thing: With that many miles are you still running the factory fuel
pump? I would check the fuel pressure too.
.
.




> 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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