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Thread: Wiring problem?

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    Default Wiring problem?

    I have a 1.8 03 vectra and have been having a nightmare with the car electrics doing random things. First it wouldn't start then that sorted itself out. Then the fans would cut out in the car and the other day the abs light and the powering steering warning light came on for about 1 min. I have checked the alternator, the battery and the starter motor and all seem to be working fine. The only thing i have noticed is the wiring is damaged the two wires in the picture one has red tape on it.



    Could someone please tell me what these wires are for please

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    That should be the wiring for the lambda sensor . Sounds like you have problem with the CIM module . You should do a diagnose they should be able to tell you if its the cim . They are very expensive but you can get a used one for 50£ but it needs recoding with tech 2

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    Would able to change the wiring loom myself? Any ideas where to get it from? Any help appreciated

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    Default

    crankshaft sensor, the lambda is positioned in the hole you can just see on the left of the pic in the heatshield and the wiring to it should be above the heatshield not underneath it or it would be trapped in constant contact with the hot exhaust manifold.

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    Thanks for your quick reply, what exactly do I need to do?

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    I would remove the red tape, get a multimeter and check each individual wire for continuity from the sensor to the nearest connector, any with no continuity I would cut out the dead section and solder in a new piece with heatshrinks to cover. Can't really see a bad crankshaft sensor wire causing ABS and power steering issues unless maybe the wires are touching each other under that red tape?

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    Thanks, Do you know if I would able to purchase the loom and change the whole thing?

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    just had a look at mine (vec 1.8 2002) and that wire is part of the full engine loom. You could buy a full loom and replace it but it seems a bit extreme to me for the sake of possibly replacing a couple of wires, or maybe even removing the red tape to see if the wires are touching and just insulating them seperately with a quids worth of electrical tape?
    The four wire connector near it does look like the lambda sensor connector but the wire with the red tape on doesnt run to that connector does it?

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    Default

    It runs to the big connector in the middle

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