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1985 Pontiac Fiero SE 2.5L Cuts out, Stall
Posted to GM Driveability on 12/17/2025 13 Replies

When I started with the vehicle it w/n start & had a code 33. I checked spark & fuel, no spark, fuel coming from injector. I checked cap, rotor & coil (all ok). I checked fuel pressure (8psi but I question my gauge due to hardly ever using the low pressure...

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car Vehicle Data

1985 Pontiac Fiero SE

VIN 1G2PF37R3F
Engine2.5 L / 4 cyl / GAS
Trans3-speed Automatic
DeliveryFuel Injection / TBI
EmissionsOBD1
SymptomsCuts Out, Stall
OccursHot, Idle, Goosing Throttle

Trouble Codes

33MAP sensor would not start
42Electronic spark timing
44Lean
Open Help Request

car Vehicle Data

1985 Pontiac Fiero SE

VIN 1G2PF37R3F
Engine2.5 L / 4 cyl / GAS
Trans3-speed Automatic
DeliveryFuel Injection / TBI
EmissionsOBD1
SymptomsCuts Out, Stall
OccursHot, Idle, Goosing Throttle

Trouble Codes

33MAP sensor would not start
42Electronic spark timing
44Lean