Chevy/GMC 6.2L and 6.5L Discussion of Chevy and GMC Trucks with 6.2L and 6.5L Diesel Engines

Why are my glow plugs short cycling

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  #11  
Old 01-11-2011, 09:30 AM
pipelayer4777's Avatar
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I don't understand it, The glow plugs have mysteriously fixed themselves, I'm not gonna complain though. The truck cycles as normal and has done it at least 10 times in a row with the truck cold. Maybe the truck just needed to recharge the batteries via the alternator for a couple trips down the road. I haven't had to change a thing which is nice for a change. Thanks for all the help guys...

---AutoMerged DoublePost---

Hey Mud how did you make out with the new parts, hope it is or did all work out for ya. I know how frustrating it can be.
 

Last edited by pipelayer4777; 01-11-2011 at 09:30 AM. Reason: Automerged Doublepost
  #12  
Old 01-11-2011, 09:32 AM
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glad see it working and you may be right batteries have lot do with these truck if there not up to there full power thing start to happen
 
  #13  
Old 01-26-2011, 08:28 PM
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Thats how my issues started. and after messing with it for months because it started again hear to find out it was my compuer somethimes it would work for a while then it would stop again. Do you het any codes. I was getting 4 or 5 but the one was 67 and i wasnt geting enough volt to PMD. I put a new ECM in it for 94$ from auto zone and never had a problem since
 
  #14  
Old 02-01-2011, 11:10 AM
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I HAVE A QUESTION ON BATTERIES,I HAVE A YELLOW TOP OPTIMA FOR ONE,IS THAT A GEL-CELL ? OR STANDARD OR AGM?
THE OTHER IS A FARM N FLEET 3 YEAR,,,WAS NEVER TOLD TO PULL THE POSITIVE WHEN CHARGING BATTERIES,MAKES GOOD SENSE THOUGH
 
  #15  
Old 02-01-2011, 02:26 PM
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Slight post derailment and theft but Optima batteries are Absorbed Glass Mat (AGM). Stay away from gel's. It's best to run same type of batteries if possible, i.e. 2 agm's or 2 flooded. Also AGM batteries can have different resting voltages and recomended charging voltages between the different brands so again best to get matching ones.
 

Last edited by Chev6.2Dually; 02-01-2011 at 02:30 PM.
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