Thread: Heater plugs

If it is a 130, then it will be a non-factory install. (unless it is a 120 that came from Australia, which did come from the factory with the 4BD1).

A factory install will have a yellow wire that goes from the ignition through the firewall to the glow plug closest to the firewall, and a little thin wire going from the ignition to the glow plug light.

If you are connecting to the starter motor then you might be mixed up with the stater relay which from memory has 5 wires off it and sits near the clutch master cylinder.

IIRC factory there is no relay on the glow plugs. Most people in Australia do not use them at all, and I have no problem starting mine in -8 Deg C.

This thread has pics of where the Yellow wire goes on the ignition barrel.

http://www.aulro.com/afvb/isuzu-land...arrel-pic.html

Hi, thanks for quick reply's we should be able to sort know.

Right, well first of all we need to see some pics of the relay and the associated wiring in order to help properly. I can tell you how to wire up the heater plugs etc from scratch BUT I would like some more info because we could use some of what is already there.

The most important thing for a 4BD1 in ultra cold climates is a decent battery and wiring to the starter. In 'cold' climates this could even negate the need for glow plugs entirely. However in sunny Scotland I would say glow plugs are a must, even in a 4BD1.

Where in Scotland are you? My BIL works and lives at Balmoral Castle...., had a dance with her majesty at the Gillies Ball last year!!!

JC

As flagg said, the Land Rovers that came from Jaguar Rover Australia were fitted with the 4BD1 never had a glow plug relay and the glow plugs were powered (the yellow wire) during the 1st step in the turn of the start key.

My guess is that roamingman's 130 was converted from a Tdi, and most likely has the glow plug relay wired as per the Tdi.

Edit: I understand you are talking of an electrical issue, but as a BTW, if you are having problems starting in cold weather, you may not be aware of the procedure for cold start fuel enrichment.

While the engine is stopped, push the accelerator pedal fully down and hold it there. Then turn the key to start. Release the accelerator when the engine is running. There is a part inside the governor (a notch in the torque cam) that allows the control rack to travel further (to the cold start enrichment position), but only when the engine is stopped.

Hi John, Is that enrichment function available in both NA and turbo pumps?

JC

Originally Posted by justinc

Hi John, Is that enrichment function available in both NA and turbo pumps?

JC

So far as I know.

They have different torque cams, but I would think the notch is still there. There is no reference to it being different in my workshop manual for the injection pump.

Some pumps have a fuel enrichment lever on the side closest to the block, which is operated by a separate cable from the engine shut-off controller. I haven't any knowledge of what this lever does inside the governor - probably similar to the manual method.

My shut-off controller had both cables, but it came from another truck, not a landie.

Originally Posted by Bush65

As flagg said, the Land Rovers that came from Jaguar Rover Australia were fitted with the 4BD1 never had a glow plug relay and the glow plugs were powered (the yellow wire) during the 1st step in the turn of the start key.

My guess is that roamingman's 130 was converted from a Tdi, and most likely has the glow plug relay wired as per the Tdi.

Edit: I understand you are talking of an electrical issue, but as a BTW, if you are having problems starting in cold weather, you may not be aware of the procedure for cold start fuel enrichment.

While the engine is stopped, push the accelerator pedal fully down and hold it there. Then turn the key to start. Release the accelerator when the engine is running. There is a part inside the governor (a notch in the torque cam) that allows the control rack to travel further (to the cold start enrichment position), but only when the engine is stopped.

Sorry been away for a few days,
should have given a bit more info, our Defender started as a 110 with a V8 engine, it was taken of the line and stretched to a 127/130 and made into a camper, by LR, then some time later the Isuzu engine was fitted, when we acquired the motor it was running but had a few problems, see photos below. Still trying to find out who fitted the Isuzu, will get a photo up tomorrow button in cab wire (yellow) to what looks like a rely, wire goes to heater plugs and one wire witch goes to starter, push button and get a click from starter, still to check if plugs get warm. We are about 40 miles from Balmoral Castle, near Banff/McDuff.


photos on our web site, Home - Teddys
click photos then D79DDU