Mud-club

Vehicle & Technical => Range Rover => Topic started by: jas-E on June 06, 2007, 20:57:39

Title: Earth issues??
Post by: jas-E on June 06, 2007, 20:57:39

Hey there,

I have just bought a Landrover Series 3 hybrid with a Range Rover 1985 3.5 V8, chassis and axles (hope im posting my problem in the right section!). Anyway it was running all perfectly until one day i was pulling away from home and it just died out. It just wouldnt fire up. I checked voltage across battery and that was near 12v. I checked the fuel pump and that wasnt working, so i though i found my problem.

Got a new fuel pump and tried to connect that with the live coming to the old one and earthing it to the chassis, but the new one wont work either. I connected it across the battery and it works fine. traced the earth going to the engine and to the chassis - which is on the bulk head, and it works there. But nearer the old pump it only works in some places. The older fuel pump has one wire going to it, so im assuming the body of the pump is the earth as it bolted on to the chassis. But when i connect the new one to the live of the battery and connect the earth anywhere on the chassis near the old fuel pump it wont work at all!!!

Do i need to earth the chassis by pulling a third cable off the battery - as the 2 wires earthing are going to the engine and bulk head.

Thanks for your help in advance.

Regards

Jas

Title: Earth issues??
Post by: Skibum346 on June 07, 2007, 00:30:46

I would have expected the negative cable from the battery to be terminated on the chassis near the front... this should then earth the whole chassis frame... Start at the battery end and see where it goes.

It might be that it goes to the engine which is then earthed to the chassis and this is where the failure is.

Good luck

Skibum

Title: Earth issues??
Post by: clbarclay on June 07, 2007, 08:03:16

standard RRC wiring (on a 1987), the earth cable runs from the battery negative terminal to the chassis, with a gap in the insulation and a clamp to the body part way along its length.

Title: Earth issues??
Post by: jas-E on June 07, 2007, 12:44:00

Quote from: "Skibum346"

Start at the battery end and see where it goes.

It might be that it goes to the engine which is then earthed to the chassis and this is where the failure is.

Good luck

Skibum

Hey mate,

thanks for your response. I have 2 earth cables coming from the battery, one to the engine and one to the bulkhead. Im thinking of fitting in an earth directly to the chassis and hopefully the fuel pump should work again. Any ideas on what sort of earth wire i need to the chassis (dimensions)?

thanks for your response..

Jas

Title: Earth issues??
Post by: Happe on June 07, 2007, 12:51:13

Quote from: "jas-E"

Quote from: "Skibum346"

Start at the battery end and see where it goes.

It might be that it goes to the engine which is then earthed to the chassis and this is where the failure is.

Good luck

Skibum

Hey mate,

thanks for your response. I have 2 earth cables coming from the battery, one to the engine and one to the bulkhead. Im thinking of fitting in an earth directly to the chassis and hopefully the fuel pump should work again. Any ideas on what sort of earth wire i need to the chassis (dimensions)?

thanks for your response..

Jas

hi there,

proper Earth is always a problem on all sorts of cars.
Just go with the old "the bigger the better"

cheers
Stefan