The glow plug system is electronically controlled by the powertrain control module. If the temperature is below 55°C (131°F) the powertrain control module will energize the glow plugs immediately after the key is placed in the ON position. Then, depending on the readings from the engine oil temperature (EOT) sensor and the barometric pressure (BARO) sensor, the powertrain control module determines how long the glow plugs will be on.
I should know this but.....
What temp sensor tells the PCM to activate the GP relay?
And, the shunts get very hot. Smoked off the oil on them. Is this normal?
And, the shunts get very hot. Smoked off the oil on them. Is this normal?
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Thanks.The glow plug system is electronically controlled by the powertrain control module. If the temperature is below 55°C (131°F) the powertrain control module will energize the glow plugs immediately after the key is placed in the ON position. Then, depending on the readings from the engine oil temperature (EOT) sensor and the barometric pressure (BARO) sensor, the powertrain control module determines how long the glow plugs will be on.
EOT, that's what I was looking for. I had it unplugged and the GPR kept coming on.
Do you know what size the "Blue Fuzable Links" on the three wires that feed back to the PCM are? Amps that is?
What three wires are you speaking of? My glowplug relay isn't working, it has something to do w/the computer controls cause i can manually get it to work but the computer won't work it and i been searching out what i could have popped to make them not work.
I have a Cali GP relay setup. Relay has a shunt on it. One for each bank of GPs. There is a wire running to the center tap and one each to each side of the shunt. Tell the PCM if one or both GP banks are working. Each color coded wire has a blue fusable link on the end that connect to the relay
ok, thanks. . .guess thats not my problem 
I don't have the DVD with the wiring diagrams on them with me right now, but each glow plug in good condition should pull around 10 amps. So each bank of GPs will pull 40 amps, 80 amps total. I'd guess the fusible links would each be around 70-80 amps as they would have to accommodate the starting or inrush current.
The fusable links are on the 16 or 18g monitor wires that run to the PCM, I assume to keep the possibility of a surge from going into PCM. I would think that they maybe 1 or 2 amps. I was just hoping someone new off hand.I don't have the DVD with the wiring diagrams on them with me right now, but each glow plug in good condition should pull around 10 amps. So each bank of GPs will pull 40 amps, 80 amps total. I'd guess the fusible links would each be around 70-80 amps as they would have to accommodate the starting or inrush current.
Oh, ok, I know what your talking about now. I'm not sure what those would be rated for, but small for sure. I'll see if I can dig up something tomorrow for you.
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