jiloppy said:
Hi Ratty tried that but there seems to be more to it when the ignition is on the earth cable sparks when you touch the earthing point. I was going to try earthing it back to the gearbox.
Click to expand...

If there is a load on the cable (ie the ignition is on) it will spark when you touch it on the earth point. The bigger the load the bigger the spark.;)
 
Took the ecu earth right back to the battery. And guess what? No joy. Does the heater matrix have an earth??
 
jiloppy said:
Took the ecu earth right back to the battery. And guess what? No joy. Does the heater matrix have an earth??
Click to expand...

there are earths on the bulkhead too.

Have you tried a jump lead as a temporary earth from the battery to the chassis, bulkhead, gearbox, body etc?
 
Hi yip that's what ive been doing cleaned all the earth terminals and connected a jump lead to earth on ecu. It helps but only slightly when you start turning on lights it sends the gauges up but if you turn on the heater it goes wild. Thanks.
 
jiloppy said:
Hi yip that's what ive been doing cleaned all the earth terminals and connected a jump lead to earth on ecu. It helps but only slightly when you start turning on lights it sends the gauges up but if you turn on the heater it goes wild. Thanks.
Click to expand...

The ecu itself doesn't require an earth.;)
 
Sorry my mistake the earth below ecu.:confused: Am getting auto spark tomorrow feck it cant be ersed noo its draining me. Thanks for your time ratty.
 
jiloppy said:
Sorry my mistake the earth below ecu.:confused: Am getting auto spark tomorrow feck it cant be ersed noo its draining me. Thanks for your time ratty.
Click to expand...

TBH from what you are describing I would expect an auto sparky to sort it pretty damn quick.:)

If for what ever reason they tell you that your wiring loom is buggered and needs a complete new one get a second opinion first. A mate was told this recently and all he needed was 2 new earth straps.
 
Doing a search it seems to be a common thing. All with same sort of problem but many different solutions I just haven't found mine yet.
 
A number of the wires into the ECU multiplugs are earths. The black ones. What the previous owner has done on mine is peeled the insulation back and soldered them all to a wire which goes straight to the battery negative terminal. I'm not suggesting you do the same, but I'd be interested in checking that all the ECU pins that are supposed to be earthed have zero resistance between them and the battery negative terminal.

Anyway, if you're getting an electrician, that's probably redundant information, but that's what I'd be looking for next.
 
jiloppy said:
Defender td5 driving me crazy i dont know where to start i had work done now when you turn the heater on temp gauge goes nuts, when you indicate the diesel gauge goes with the flasher turn on the full beam the speedo goes backwards. Honestly its driving me insane. Removed the cluster panel and someone has messed about with wiring there is a few wires that should have a multi plug i think but cant be sure until i see another cluster panel so any pics guys of the wiring going into panel.
Click to expand...

what was the work that you had done before all of this started?
 
ratty said:
what was the work that you had done before all of this started?
Click to expand...

Galv chassis and was convinced to do the bulkhead as well which I wish I hadn't done cause I don't think I would have had this grief. The chap who did it says he will fix it but ive only had it back a week and he had it for 4 months so needless to say its a no brainer.
 
Brown said:
A number of the wires into the ECU multiplugs are earths. The black ones. What the previous owner has done on mine is peeled the insulation back and soldered them all to a wire which goes straight to the battery negative terminal. I'm not suggesting you do the same, but I'd be interested in checking that all the ECU pins that are supposed to be earthed have zero resistance between them and the battery negative terminal.

Anyway, if you're getting an electrician, that's probably redundant information, but that's what I'd be looking for next.
Click to expand...

noticed a black cable with the the sheathing off it today but its lead wire inside going to the red plug in ecu
 
Last edited:
jiloppy said:
Galv chassis and was convinced to do the bulkhead as well which I wish I hadn't done cause I don't think I would have had this grief. The chap who did it says he will fix it but ive only had it back a week and he had it for 4 months so needless to say its a no brainer.
Click to expand...

in that case Check to make sure that the earth point in the engine bay by the expansion tank is clean and tight.

Check the red plug on the ecu doesn't have oil contamination and clean it if it does.
 
Nope I could keep you's guessing all nite but a don't think you will ever get it so I will put you out your misery.
 
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