Isuzu Trooper Owners Club UK™

fatso_1234 · ** Joined: 07 Jul 2006 Posts: 58 Location: Canada

Does anyone know what the CSD relay is for in the fuse box? I figured it stands for "cold start device", but does that mean the glow plugs? I know there's another relay on the other side of the engine bay that is definitely for the glow plugs and having 2 doesn't make much sense. I found something that said some VE injection pumps have a cold start system that advances the timing. Any ideas?
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1991 Bighorn LWB 2.8 TD 4JB1-T

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mutlley · ***** Joined: 09 Dec 2006 Posts: 553

is it not for the silly butterfly device in the exhaust, the one that always jams, causing lots of problems and everyone dissconnects?

Hard1 · Posted: Wed Aug 29, 2007 15:55 Post subject:

Pull it out, quick! Rolling Eyes

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1999 Cougar with a NICE motor..

Click HERE to see under my bonnet!

fatso_1234 · ** Joined: 07 Jul 2006 Posts: 58 Location: Canada

That's probably right. Probably just uses a relay for the purpose of having the switch on the dash.
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1991 Bighorn LWB 2.8 TD 4JB1-T

Grandad · ******* Joined: 22 Sep 2005 Posts: 1902 Location: NORFOLK

the csd is in the pump on all 2.8 and 3.1 injection pumps it advances the pump internally it is controlled by a temperature sender in the thermostat housing

Hard1 · Posted: Thu Aug 30, 2007 0:44 Post subject:

Put it back, quick! Shocked

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1999 Cougar with a NICE motor..

Click HERE to see under my bonnet!

DYLAN · Posted: Thu Aug 30, 2007 8:13 Post subject:

Hard1 · Posted: Thu Aug 30, 2007 12:48 Post subject:

fatso_1234 · ** Joined: 07 Jul 2006 Posts: 58 Location: Canada

Thanks Grandad, that's what I was wondering.

When my engine is cold and at low revs it blows out quite a lot of white smoke. When I rev it up the smoke goes away, which might be due to the rpm timing advance in the pump.

So how can I check if the cold start (timing advance) device is working properly?
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1991 Bighorn LWB 2.8 TD 4JB1-T

Grandad · ******* Joined: 22 Sep 2005 Posts: 1902 Location: NORFOLK

this device only works when the temperature is low when it works there is a noticeably sharper knock to the engine on tickover and this gradually becomes less sharp as the engine temperature rises

this can be tested by starting the engine when warm and then disconnecting the temperature sender on the thermostat housing the engine should then have a sharper tone to it
if i remember right the sender for this is on the right as you look into the engine from the front

fatso_1234 · ** Joined: 07 Jul 2006 Posts: 58 Location: Canada

Okay I'll give it a try. So you're saying that the temperature switch is open when its cold?
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1991 Bighorn LWB 2.8 TD 4JB1-T

mia · ** Joined: 28 Oct 2006 Posts: 113 Location: aylesbury

Hard1 · Posted: Sun Sep 02, 2007 10:41 Post subject:

mia · ** Joined: 28 Oct 2006 Posts: 113 Location: aylesbury

Just curious cos i thought, well if it's not being used and it doesnt need to be there, whats the point in replacing it if the rest of the exhaust goes! (fingers crossed it wont)!
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If you can't fix it with a hammer, you've got an electrical problem.

Hard1 · Posted: Sun Sep 02, 2007 12:34 Post subject:

You defintely don't need it. It's a strange solution anyway, but if you lived in Northern Canada you might be glad you got it. There is absolutely no point in replacing it, no, and you could use the illuminated switch for something else!
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1999 Cougar with a NICE motor..

Click HERE to see under my bonnet!