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  #41  
Old 04-18-2017, 01:55 PM
Bigshankhank Bigshankhank is offline
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Glow plug diagnosis help.
Current symptom; when I turn the key to the run position, the dash glow plug light does NOT illuminate, nor does the solenoid on the back of the driver's side head click. Step one in everything I've read is to start with the fuse, but I cannot locate it. Any guidance on where I will find it? My fuse panel beneath the dash is old and I cannot make out what should be what down there. However I am not seeing any 20a fuses which are burned-out.
Thanks
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  #42  
Old 04-18-2017, 03:24 PM
Bigshankhank Bigshankhank is offline
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While searching for the glow plug fuse, I went ahead and followed the wiring and controller testing procedure and come to find out that the controller is showing too much resistance on the 2 - 3 pin test (reading 1.8ohms, spec is .4 - .7ohm). So looks like the controller needs to go.
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  #43  
Old 04-18-2017, 03:29 PM
Dvldog8793 Dvldog8793 is offline
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Just fyi, Ive been running my blazer for 3 years without a controller. I use a momentary button to run the relay when I need it. This engine is very strong and will start with no glow time about 50% of the time in moderate temps.

Also might want to ohm out the GPs while your in there.
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2001 Chinook RV, V10 gas
1974 John Deere 1530 diesel tractor
1993 John Deere 455 Diesel lawn mower
1967 GTO, 1989 Honda Transalp
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1998 6.5 suburban, stock, daughter's
1993 6.5 3500 CCSWLB GM8, Heathed, big exhaust, gauges, Son's

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  #44  
Old 04-18-2017, 06:21 PM
Bigshankhank Bigshankhank is offline
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Given that this is my daughters vehicle, I am trying to make its operation as simple as possible. Teaching her about how glow plugs work has been enough of an effort, teaching her now that she needs to learn to use a new starting technique (momentary switch) is just going to confuse/frustrate her. So as with the OEM lift pump, I am going back to as much of the original design as possible and upgrading only those things where the operational impact is minimal.
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  #45  
Old 04-18-2017, 06:25 PM
Bigshankhank Bigshankhank is offline
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I do appreciate the suggestion, but there will come a time where she will need to manage this thing herself, and I don't want to spend my days explaining to her over the phone from wherever she is broken down how we kajiggerred her TPS so she needs to explain it to the tow truck that picks her up. I've got that kind of confidence in my knowledge, but if I'm not around she needs the machine to be as close to the original textbook as possible. I am trying to teach her about mechanics, but she really has no interest and just needs this thing to work.
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  #46  
Old 04-18-2017, 07:11 PM
Dvldog8793 Dvldog8793 is offline
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There were two different glow plug controllers. if you look in the books or do a search you will find the change over year. the newer style is the one to go with. I think the year was 1986 that the newer style started.
I agree 100% in the KISS theory....
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1996 Chvy 3500 CCDWLB 6.5 Heathed, NO vac, marine injctrs, ARB bumper, BIG pipe, 3" lift, bright lights, bypass oil system.
1986 Chvy 6.2 M1009 blazer RAM AIR, Headers, Custom interior
2001 Chinook RV, V10 gas
1974 John Deere 1530 diesel tractor
1993 John Deere 455 Diesel lawn mower
1967 GTO, 1989 Honda Transalp
2009 VW Jetta TDI, flashed and piped, 6speed, fun car!
1998 6.5 suburban, stock, daughter's
1993 6.5 3500 CCSWLB GM8, Heathed, big exhaust, gauges, Son's

1984 6.2 ATS turbo 3500, SCDWLB - Son's
3 kids, 1 wife, 1 dog
Gunsmith, Tactics Instructor, Fabricator USMC 87-93 Semper Fi!
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  #47  
Old 04-19-2017, 05:12 AM
Bigshankhank Bigshankhank is offline
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I thought the newer controller required relocating the controller? Seems like a lot of the advice is written for suburbans & C-series trucks as opposed to the skeevy pedo-van.

Any recommendation on which manufacturer to go with or stay away from? I've chased hell on O2 sensors buying cheap ones (niekon or some such) as opposed to proper Delco, so I am willing to pay a little more for a better quality unit.
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  #48  
Old 04-19-2017, 06:27 AM
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DmaxMaverick DmaxMaverick is offline
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Yes, Delco is preferred. Rather than replacing what was original, do yourself a favor and upgrade to the 1985+ controller and inhibit switch (temp sender). More simple and more reliable. It's also a good idea to install a manual override for either system, for when it doesn't want to play nice. It's as simple as adding a momentary switch/button (in the dash) to apply 12V to the small pole on the relay.
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  #49  
Old 04-24-2017, 12:17 PM
Bigshankhank Bigshankhank is offline
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Well I am trying to get a hold of Kennedy Diesel to get some info on the controller upgrade kit they sell. Hopefully I can release an order today or tomorrow, I really want to get this thing running again.
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  #50  
Old 04-25-2017, 10:30 AM
Bigshankhank Bigshankhank is offline
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Whelp, Kennedy has a new controller upgrade kit heading my way. Looking forward to breaking out the soldering gun and making this baby rattle again. At least, assuming the lift pump is working. And my fuel tank isn't completely contaminated. And my injector pump isn't shot. Baby steps...
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