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glow plug times

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Old Nov 9, 2007 | 07:34 AM
  #1  
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wmiller
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From: North East, MD
glow plug times

does anyone have a chart on how long the glow plugs cycle at given temps. I have mine on a manual switch and dont know how long to leave on. I've been turning on when turn key on wait 10-15 sec and starts fine and leave on maybe another 5 sec.
 
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Old Nov 9, 2007 | 07:49 AM
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Originally Posted by wmiller
does anyone have a chart on how long the glow plugs cycle at given temps. I have mine on a manual switch and dont know how long to leave on. I've been turning on when turn key on wait 10-15 sec and starts fine and leave on maybe another 5 sec.
I'm not sure there is a chart.. the GPs are timed based on EOT & baro pressure , determined by the PCM...

You can use a little trial & error to determine what works best for your truck...
 
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Old Nov 9, 2007 | 08:17 AM
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120 seconds max from the time you turned the key is the most the PCM will allow. Shorter on time comes from barrow/EOT info.

Bill
 
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Old Nov 9, 2007 | 10:26 AM
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Neal 97 250
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I hear cali pcm will do 180 seconds
 
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Old Nov 10, 2007 | 08:10 AM
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From: North East, MD
I've just been feeling it out long enought to start easy than a few sec after start to eliminate first rough idle. I just want to be sure no ill effects would come from not staying on long enough
 
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