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| Nigel |
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I have an EF Ghia. Seems my problems at the moment stem from a floating ground (There is up to .5v difference from the battery earth to the block).
Now seeing as this is the *major* connection - this presents a problem : o2 sensors see .5v more, or less etc etc. The AU seems to have a strap back to the body from the engine as well (A decent one), and the EB also had one. Is this a common problem on the EF? Nigel |
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| Krytox |
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A lot of people add an extra Earth strap on all makes and models,
I myself have added another earth from battery to block and block to chassis.
_________________ Carefree, we may not be number one, but we're up there. |
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| snap0964 |
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Is there any change after cleaning the block connection and the battery post connection ???
What resistance are you getting from the engine earth strap ??
_________________ 96 XH Longreach 'S': LPG, Alarm, 3.23:1 LSD, Cruise, Trip Comp, ABS, Power Windows, Mid Series Dome Lt, Climate Ctrl |
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| nannas_ed |
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i replaced my factory earth straps from batt--->chassis--->block with thicker 4guage earth straps didnt really notice a difference but hey for $25 and a solid ground im not complaining
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| Nigel |
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I cleaned the existing connections when I put the AU Engine in : I was *very* suprised that I had that much drop.
It was very measurable at .2-.3v during the day, and at night (Additional lighting load) it is higher - enough that the car struggles to run. The EB used to have a strap from the gearbox to chassis as well. I will be getting all 3 straps replaced I think tomorrow : $40 isnt a lot to pay for peace of mind. Im hoping I can get some custom ones done up at a welding shop. |
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| twase |
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I have a 0ag wire hose clamped to the O2 sensor and connected back to the gas earth. Thats the only sensor that matters for my LPG.
_________________ BF Fairmont Ghia Series II update. |
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| Nigel |
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He he he - and oddly enough, its the only one that really gives me problems right now - its affecting petrol as well but not as much.
Im actually thinking of moving my LPG earth to the o2 Sensor instead. but - if theres floating volts anywhere it also means the radiator tends to get hit with electrolysis as well - and the head gasket - and the head. Nigel |
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| twase |
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You still need a solid earth from block to motor and block to battery.
_________________ BF Fairmont Ghia Series II update. |
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| Nigel |
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Im going for both of those (Why on earth ford didnt do block to body I dont know - they did on EB, and AU)
Im also going battery to earth as well just for good measure. |
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| sookywawa |
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I had an earthing problem in my ef so i cleaned the batterey to block cable and the little earth near the header tank and there is an earth on the passenger side under the intake manifold behind the A/C pump that you can reach from under the car with the oil filter removed why ford put one there i have no idea.
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