Camaro Z28 V8-305 5.0L VIN F FI (1991)
Fuel Gauge Sender: Technical Service Bulletins
Fuel - Hesitation/Stall On Quick Stops In Hot Weather
Number: 92-350-6C
Section: 6C
Date: APRIL 1993
Corporate Bulletin No.: 336302
ASE No.: A1, A8
Subject:
HOT WEATHER DRIVEABILITY
Model and Year:
1991-92 CAMARO WITH 5.0L TBI ENGINE (RPO L03)
Some 1991-92 F-cars with 5.0L TBI engine (RPO L03) may exhibit a hesitation/stall during an aggressive stop that may result in a prolonged/hard
restart. This condition has only been experienced during high ambient temperatures when the fuel gauge reads one-half full or less.
CAUSE:
The TBI fuel pump is ingesting air/fuel vapors when fuel is sloshed away from the fuel pump pick-up strainer.
CORRECTION:
Follow appropriate Service Manual procedures when diagnosing fuel-related problems. When the above symptoms are present, verify the condition by
checking the fuel system pressure for pressure loss during an aggressive stop above 35 mph.
If diagnosis indicates fuel pressure loss, a possible cause is the fuel pump losing prime. Vehicles may be repaired by replacing existing Fuel Sender and
Pump Assembly with new assembly, P/N 25029778, with derated rollervane pump following applicable Service Manual procedures, Section 6C, Engine
Fuel.
PART AVAILABILITY:
Parts are expected to be available on 04/19/93.
WARRANTY INFORMATION:
Labor Operation: L1200
Use applicable labor time guide for labor hours.