December 1, 2000 Service bulletin

Part throttle or wide open throttle spark knock; sag or hesitation following a cold engine start; rough...

Jeep technical service bulletin 1802300 for 1999-2000 Jeep Grand Cherokee.

Bulletin number: 1802300
Component: Engine and engine cooling: engine: gasoline
Summary: Some vehicle engines may exhibit part throttle or wide open throttle spark knock; sag or hesitation following a cold engine start; rough idle; idle sag when decelerating to a stop. Tt

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