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#1
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No power at glow plugs
so I had a couple min to check stuff out other than the fuel lines I was checking some electrical and found no power to glow plugs on cranking
It's 70 degrees here but I figure there should be power at least at cranking There is also an extra electric inline fuel pump pulling from the tank It is cool nbected to a bus bar I disconnected it and it works with direct power If I jumper to the glow plugs with my aligator clips it instantly blows my In line fuse (30 amp ) So o am assuming there is some powering up issue Sorry for all my possibly dumb questions but I've got much learning to do |
#2
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So what is your question?
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1985 744 gle d24t 1985 745 gle d24t |
#3
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Lol
I'm assuming the glow plugs get power from the big square relay What triggers this relay ? Also where might I be getting a short circuit at the glow plugs? My wiring is a little strange as the car was a prv Swapped with h a d24t from a 760 with some components from d24 240 also |
#4
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GP relay triggered by the temp sensor screwed into the rear of the head, hiding under the rear cam cogged gear that drives the IP belt. Actually located more inbetween the cam gear and the IP rather than directly under the cam gear. Disconnecting the temp sensor should fool the relay into giving max GP time.
Hard Starting sticky, specifically the Glow Plug Section More on GP testing
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1985 744 gle d24t 1985 745 gle d24t |
#5
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Quote:
Short circuit could be a shorted plug, or the glow plug bus insulation missing somewhere and touching something. The plugs draw 12+ amps each though, so if you're concerned there's a short because it blew a 30A fuse while testing it, that would be normal. Do a visual check for shorted bus or supply wire, and if OK, start checking the rest of the system out.
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86 745 D24T/ZF 345k lifted 2.5" 83 764 D24T/M46 155k |
#6
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Got it
Replaced return lines from injectors
Burped the cooling system Checked for shorts found none Pressurized the tank and forced fuel untill the return was free of bubbles Charged battery and jumped with another car and after a bit of cranking 4-5 cranks 15-20 sec each it fired and now starts easy Thanks for the help ! |
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