P0300 1997 5.7
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CF Beginner
Joined: Sep 2018
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P0300 1997 5.7
1997 5.7 Silverado random P0300. Cold start engine runs fine but after driving for awhile in closed loop, shut engine off, a immediate restart creates a P0300 and engine runs very rough. Let sit overnight and engine starts and runs fine until a repeat of a immediate restart and problem reoccurs. Misfire never occurs unless the ignition is cycled.
CF Monarch
Joined: Oct 2017
Posts: 4,605
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From: USA
1997 5.7 Silverado random P0300. Cold start engine runs fine but after driving for awhile in closed loop, shut engine off, a immediate restart creates a P0300 and engine runs very rough. Let sit overnight and engine starts and runs fine until a repeat of a immediate restart and problem reoccurs. Misfire never occurs unless the ignition is cycled.
