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1995 Pontiac Firebird Formula 5.7L Bad scaner waveforms
Posted to GM Driveability on 8/15/2013 7 Replies

Code 33 is setting at idle because the engine is not producing enough vacuum to satisfy F.R.E.D., however there is enough to operate the brake booster.

We have been test driving the car and preparing to deliver it back to our customer when the engine data we...

7 Replies Received (View Replies)

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car Vehicle Data

1995 Pontiac Firebird Formula

VIN 2G2FV22P6S
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / SEFI
EmissionsNot OBD-II Compliant
SymptomsBad Scaner Waveforms
OccursHot, Under Load, on Decel, Cruise, Idle

Trouble Codes

33manifold absolute pressure sensor circuit high
Message Closed

car Vehicle Data

1995 Pontiac Firebird Formula

VIN 2G2FV22P6S
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / SEFI
EmissionsNot OBD-II Compliant
SymptomsBad Scaner Waveforms
OccursHot, Under Load, on Decel, Cruise, Idle

Trouble Codes

33manifold absolute pressure sensor circuit high