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bad glow plugs

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Old Mar 12, 2010 | 09:52 AM
  #16  
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Dislexiq
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From: Clarksville, TN
I'll just go ahead and replace the gp relay for now, but I most likely will eventually just put in a manual switch for the gp's. Thanks for the help ,all.
 
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Old Mar 13, 2010 | 11:13 AM
  #17  
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my GP relay clicks a few after initial warmup, I was told it was a 'afterglow' feature that helps the first few engine rotations when the motor is cold.
 
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Old Mar 13, 2010 | 07:30 PM
  #18  
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my wait to start light is messed up but the glow plugs still work. my trucks clicks to that is my wts lite (i wait till it starts clickin then start it) i was told it was a timer clicking not the relay although it sounded like the relay
 
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Old Mar 13, 2010 | 11:00 PM
  #19  
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Dave Sponaugle
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From: Nutter Fort, WV
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Afterglow is a normal function to help reduce white unburned fuel smoke on startup.

The 86 and earlier system relay was not the problem.
The controller in the rear of the drivers side head is what failed and turned the glow plugs on.

The relay is what you hear clicking.
 
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