Preheat light

/ Preheat light #1  

rob64

New member
Joined
Jan 25, 2015
Messages
2
Location
Fruitvale
Tractor
Kabota 4200
My glow plug light keeps coming on and off once the tractor is running any suggestions
 
/ Preheat light #2  
Does it come on even after the engine is warmed up ?? or for a period of time after a cold start ??
 
/ Preheat light
  • Thread Starter
#3  
Does it come on even after the engine is warmed up ?? or for a period of time after a cold start ??

Yes it comes on even after the engine is warm. It will come on for maybe 30 seconds then off for a few minutes, back and forth.
 
/ Preheat light #4  
That's worrisome.
Could be the ignition switch is sticking keeping the glow on.
Quick, simple cheap 'maybe' solution is to squirt WD40 into the key slot.
That will liquify and dry lubes that may be causing your problem. Nothing to loose.
 
/ Preheat light #5  
:welcome:
To the forum from Alabama.
 
/ Preheat light #6  
Those 4200 glow plugs are turned on when the ignition is turned to the run position,
then a timer relay under the dash takes over, like Piloon said, your switch may be re-cycling the relay,
or it could be the relay itself or a wiring issue.
 

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