Performance Improvement Ideas

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"Jeep Cherokee XJ Trouble Shooting - My Jeep won't start! Clear Flood Procedure"

October 16, 2009 by Mike Strawbridge

Sometimes an injector will leak or for some other reason, excess fuel can collect in the intake manifold.  When this happens the Jeep engine will spin over but not fire.  Sometimes it will fire, stumble and then die.  

The manufactures prepared for this contingency for adding a clear flood mode to the engine computer.  To engage this mode you have to pay attention to the position of the accelerator pedal when you switch on the key and try to start your Jeep.  

In order to engage the clear flood mode, press the accelerator pedal all the way to the floor.  Then, switch on the ignition and attempt to start the vehicle.  Once the engine starts, release the pedal to allow normal operation.  

If the engine again fails to start, switch the ignition off and release the pedal.  Try to start the Jeep normally.  If it starts then stumbles and dies, try the clear flood again or try again with the throttle closed but open it slightly as soon as it starts to run.  

The idle speed control circuit may get a little confused by all this so hold the throttle slightly open until the engine runs smoothly.

 Jeep Cherokee won't start off road


Mike Strawbridge October 16, 2009