gq td42 no accesorys or ignition.

[Belvo]

hey guys got my self a td42 gq and went to start it today and everything died when i tried to turn it over.
checked the alternator starter fuse looks fine and is not showing a break on the multi meter.
none of my accessory's work and when i turned on the hazards the relay under the dash went crazy took it out and put it back in now its completely dead.
any ideas what the problem could be guys?

[AB]

Check your main ignition fuse under that black cover next to your crank battery.

But if it is is blown try and find why?

Mine was old dodgy wiring on the alternator which shorted out and blew that fuse.


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[mudnut]

Check the battery terminals. If ok then check the battery voltage, and the water level in each cell. Check the earth wires to the body and chassis.

[GQtdauto]

Does it have central locking ? If I accidentally press the lock button with door open the GQ thinks I'm stealing it and nothing works .

[Belvo]

its happened before when i replaced the alternator i shorted the fuse so got another one from the wreckers and fired straight away this time its out of the blue car was parked for 1 day and randomly happened.
whats the best way to test fuses i was shown to put it on the setting for under the omega sign and if it the fuses is good it should beep but if it has a break it wont do anything?

[4bye4]

its happened before when i replaced the alternator i shorted the fuse so got another one from the wreckers and fired straight away this time its out of the blue car was parked for 1 day and randomly happened.
whats the best way to test fuses i was shown to put it on the setting for under the omega sign and if it the fuses is good it should beep but if it has a break it wont do anything?

That is correct the omega sign or ohms scale on a multimeter will read a value nd the beep will sound if equipped and the fuse is good. It will read zero and not beep if the fuse is bad. Also check the fuse holder itself for rust and if it starts working again see if it gets warm. If the fuse holder gets warm it is probably not making a good connection.

[Belvo]

replaced the fuse with a 80amp fuse and still nothing the accessory worked until i tried to crank it and everything just died again.
im stumped now

[4bye4]

That is a classic sign of a dry or high resistance joint. Check the battery terminals are tight and the fuse terminals are clean and making good contact. Don't use steel wool to clean them unless battery is disconnected first. Check all the earth terminals for corrosion and tightness. What happens is that low current things like accessories lights etc work ok but when the joint is loaded with a high current dray (starter motor) the continuity of the joint fails.

[Belvo]

thanks man ill have to go over it tomorrow im over standing in the rain.
the glow plug fuse looked a bit funny looked like it had white residue over it would that affect it?
so go over the battery terminals earth starter terminals and all fuses?

[4bye4]

the glow plug fuse looked a bit funny looked like it had white residue over it would that affect it?
so go over the battery terminals earth starter terminals and all fuses? Yes that is corrosion and would cause the problems you are haveing. Check all fuses, fuse holders and wires and terminals for this and for tightness. Where are you located?? Are you near the sea or has the car been under water at any time.?

[Belvo]

i cleaned the glow plug relay that helped a bit some accessory work now but still dies when i turn it on and put the headlights on.
only had the car for 5 month and never been near a beach old owner was a farm ute before me.
i used contact cleaner and that cleaned it up well.
it been raining heavy the past 2 days but i dont see how any of that can get into the relays and stuff.

[4bye4]

Hey mate, all those things, starter, glows and headlights are high current draw items. That sounds more and more like a corrosion / high resistance earth problem to me. There is almost certainly a loose or corroded join or joints somewhere. Check your battery terminals for tightness and good contact. It is possible but not probable that the battery itself is high resistance internally. Yendor, have you got any input mate?

[Yendor]

Hey mate, all those things, starter, glows and headlights are high current draw items. That sounds more and more like a corrosion / high resistance earth problem to me. There is almost certainly a loose or corroded join or joints somewhere. Check your battery terminals for tightness and good contact. It is possible but not probable that the battery itself is high resistance internally. Yendor, have you got any input mate?

I think you have it pretty well covered. It sounds like either dirty battery terminals, stuffed battery or a high resistance in the main earth from the battery to the body.

The only thing that's not real clear is, had any of the main fuses blown?

[Belvo]

All the fuses seem fine.
I'll give it a good cleaning tomorrow and go over all the connections that should fix the issue it seem.
Just don't understand how it happens out of the blue like this?
When you say high resistance what does that mean?

[mudnut]

All conductors are used because they have a low resistance to the flow of electrons (amps) through them when volts are applied.

A high resistance joint resists this flow and can cause a "voltage drop" across it.

The voltage drop "takes away" a portion of the voltage applied to the components in the circuit. They can't operate correctly and present some of the signs you have already described.

As the current flows, the electrons are forced through the joint and heat is the result. Sometimes there can be excessive heat which can cause major problems.

High resistance can be caused by the joint surfaces being dirty or corroded, loose the fasteners, carbon coating (from heat), dry / cracked solder, squashed or partially cut conductors and/ or a combination of any of these.

The point where the conductors enter the lugs or terminals can also be loose, or corroded.

There is more to it, but these are just some basic causes of high resistance in a circuit.

[Belvo]

Thanks for the help guys hooked a jumper lead from the the neg on battery to the motor.
Then it fired up so the earth was a bit stuffed it was all covered in white crap and had some loose stands so cut the cable back and re did it connected it all up and it's good as new now.

[4bye4]

Good to hear mate I will PM my address and you can send cash. LOL