Thread: 4bd1 glow plug current

most glow plugs are in parralel-on one bus bar.
12V system they get 2-4 volts on startup and dont get close to pulling full test amps.when giving a hit on the battery its easy for these to explode.
then they can be hard to get out of the head.

I thought 110 has a relay clamped to the starter motor.
these only get power when cranking.I used a few of these wires to join the alt/starter power terminals.

Isuzu was one of the first with glow plug control.this is common now.
gemini/van/rodeo has a good system that easy to strip out or copy.
these are refered to as idle control systems.

two control boxes-one is startup glowplug the other is after glow.
2 relays-12V and 7 volt via a droping resister.
a shunt on the bus bar measures current draw to judge temperature resistance.

water temp sender controls preglow time.
a temp switch on the top hose outlet cancel glow on restarts when above 80-90 degc.

at low temps a fast idle solinoid is used,later models have fast warm up systems.
10Kmh speed sencor cancels the system until stationary.

cold climate cars also get extra manifold and fuel heating systems.

nissan use a series/parralel change over system so they dont require the resister.

on your standard landy fitting you only get glowing if you hold the key half way between ignition on and cranking, an orange idiot light that looks like a choke indicator will come on when you're in the right spot.

a bit OT, but a consideration for very cold weather..

Its been -7, -8 here for the last new nights and I'm finding that my accelerator is sticking in the morning. There must be a little moisture in the cable that is holding it.. scared the **** out of me the first morning after I'd plodded along until if more of less warmed up then opened it up turning onto a main road and it stuck wide open!

...so might want to check that your accelerator returns to idle if you are leaving it out in very cold weather

Originally Posted by flagg

a bit OT, but a consideration for very cold weather..

Its been -7, -8 here for the last new nights and I'm finding that my accelerator is sticking in the morning. There must be a little moisture in the cable that is holding it.. scared the **** out of me the first morning after I'd plodded along until if more of less warmed up then opened it up turning onto a main road and it stuck wide open!

...so might want to check that your accelerator returns to idle if you are leaving it out in very cold weather

Check your floor mat. only time mine stuck was pedal catching on cutout of floor mat.