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6.5L Diesel Engine Discuss the 6.5 GM diesel engine & associated components. Automatic transmission questions & problems belong in the 4L80/85 - 4L60E - 6L90 Transmission Forum

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Old 10-25-2006, 10:24 AM   #1 (permalink)
Turbine Doc
 
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Glow system troubleshooting on my 98

Some of you may have been following this one a little https://www.dieselplace.com/forum/showthread.php?t=95036

I changed the oil & trans fluid in it just to be sure there were no flood issues both sumps were water free. When I went to start it back up; it would crank only. "Now What"???, I had a new Heath remote driver kit so I went ahead and installed it, nope that's not it. I could hear the glow relay kicking it and see the command going out on my scan tool, all that was cool.

Truck had not been having much of a starting issue, and that P380 code was intermittent, so I did not think I had a glow problem,,,, well now ,,,, sumthin weren't rite, truck was starting fine after extended crank on 70F day, but now that it was 50 F no joy. Battery's were new just replaced, grounds were clean, so I was perplexed. yesterday after it had warmed back up to 70 it started up.

Hmmn that ain't rite, so I started investigating what it could be I've attached some photos to help me splain it some. Wait for the photos I'm still editing them for size & comment they will be coming in as I edit them

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Old 10-25-2006, 11:55 AM   #2 (permalink)
dvdmacdaddy
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I just got through with the same problem, turned out my glow plug controller was bad and I had a few glow plugs not working at all. Replaced the controller and plugs and no it starts just fine.

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98 GMC K2500 ECSB 6.5TD, F VIN, 3.73, 4l80e trans, #9 Resistor, FSD Cooler, AC Delco 60g glow plugs, 4in exhaust w/ 3in down pipe, Wester ECM re-flash, homemade TM or stock wastegate (which ever I feel like using), Bully Dog Trans/Boost/EGT gauges, D-Max fan & clutch, Water/Methanol Injection 15% meth/85% water, Marine Injectors

Crossing fingers I get an IC for X-Mas!! That would be sweet.

"Taste death, live life."
"If it is s that important it wouldn't fall off that easy."
"I don't know what this is or where it came from but it looks important."
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Old 10-25-2006, 12:19 PM   #3 (permalink)
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Shown here are pics, first I probed the output of the glow relay to see if it was sending any volts to the glow plugs it wasn't, then I probed the PCM input to the controller, as I could hear the relay click but no power was going to the glows.
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File Type: jpg DCP01776.JPG (63.3 KB, 1105 views)
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Old 10-25-2006, 12:26 PM   #4 (permalink)
Turbine Doc
 
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Then having a need to know more I dissected the thing
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Old 10-25-2006, 12:40 PM   #5 (permalink)
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Problem was even though glow relay was cycling, contact wasn't being made thru the transfer bar to feeding the glow plugs, plastic had melted keeping one side of the bar from fully engaging. During my troubleshooting, I also found 1 bad glowplug, there may be 2 more, but behind the turbo downpipe I could not get to em, I'll do those when I replace the downpipe & upgrade to the 4" exhaust.
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Old 10-25-2006, 12:52 PM   #6 (permalink)
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After finding I have original GM 11G's I'm thinking on replacing with some sort of quick heats.

I'm leaning toward a set of 60Gs as a study done over on the Page showed that they were good for extended glow cycle, and seemed to heat as quickly as the Kennedy quick heats I have in my 98 truck, the OEM 11Gs will burn out with extended glow time but don't swell like the original 9Gs did.
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Old 10-25-2006, 01:02 PM   #7 (permalink)
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TD, so what did you do - fix or replace relay? Are they dealer-only, expensive? Hope you didn't use and Briggs & Stratton parts ! Or I guess you put mower on back burner for the 6.5.
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Old 10-25-2006, 01:08 PM   #8 (permalink)
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Too funny, it was repair lots of broke stuff day at the house as I've been ont the road for my day job last 2 months, the Briggs part was indeed for a mower (new muffler) I had fixed while I was waiting for the new relay to arrive. I got the new relay at O'Riley's auto parts $49 lifetime warranty
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Old 10-25-2006, 06:23 PM   #9 (permalink)
dvdmacdaddy
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Quote:
Originally Posted by BobT;1372444;
TD, so what did you do - fix or replace relay? Are they dealer-only, expensive? Hope you didn't use and Briggs & Stratton parts ! Or I guess you put mower on back burner for the 6.5.

New Borge Warner Relay, 8 AcDelco 60g plugs from Orielly Auto $148.
__________________

98 GMC K2500 ECSB 6.5TD, F VIN, 3.73, 4l80e trans, #9 Resistor, FSD Cooler, AC Delco 60g glow plugs, 4in exhaust w/ 3in down pipe, Wester ECM re-flash, homemade TM or stock wastegate (which ever I feel like using), Bully Dog Trans/Boost/EGT gauges, D-Max fan & clutch, Water/Methanol Injection 15% meth/85% water, Marine Injectors

Crossing fingers I get an IC for X-Mas!! That would be sweet.

"Taste death, live life."
"If it is s that important it wouldn't fall off that easy."
"I don't know what this is or where it came from but it looks important."
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Old 10-25-2006, 07:17 PM   #10 (permalink)
Turbine Doc
 
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Quote:
Originally Posted by dvdmacdaddy;1373030;
New Borge Warner Relay, 8 AcDelco 60g plugs from Orielly Auto $148.

If you still have them list the p/ns in the part point sticky

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