Engine - Hard Starting Below 32 Degrees

9215chevy01

Number: 91-463-6A

Section: 6A

Date: DEC. 1991

Corporate Bulletin No.: 136525

ASE No.: A1, A8


Subject: HARD STARTING BELOW 32 DEGREES


Model and Year: 1991 STORM WITH 1.6L ENGINE


Some 1991 GEO Storms with the SOHC engine (VIN code 6) may have difficulty starting at ambients below 32 degrees F. Symptoms may include long cranking times, start/stall, unstable idles or failure to start. If normal service procedures do not correct the condition, new calibrations with improved cold startability have been released. When using the Tech 1 tool and EEPROM Service Cartridge, TKO6030A and Date Cartridge, TKO6032 select the appropriate calibration number:

1.6L SOHC Federal With Auto Transmission - 16165819

1.6L SOHC Federal With Manual Transmission - 16165809.

The above calibrations may also be used with CAMS.