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Thread: 7M-GE MX83 Cressida wire / loom help

  1. #1
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    Default 7M-GE MX83 Cressida wire / loom help

    Hey guys, bought a Cressida with head taken apart about a month ago and i just need to know where these wires go, after fitting pretty much everything into it's place, it's these wires that i can't seem to find where they go...

    http://imageshack.us/f/651/img20120329192001.jpg
    http://imageshack.us/f/827/img20120329191903.jpg

    Any help is much appreciated!

  2. #2
    Junior Member Backyard Mechanic
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    Default Re: 7M-GE MX83 Cressida wire / loom help

    First pic is oil presure. the second appears to be starter wire,trans wires and grounding for ecu.

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    Default Re: 7M-GE MX83 Cressida wire / loom help

    you should have connectors from your trans yet to be connected. the ground points just bolt to the inlet manifold.

    are you in the west of melbourne.

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    Default Re: 7M-GE MX83 Cressida wire / loom help

    Thanks for the reply neal! i am located in the south-eastern suburbs of melbourne haha
    It was weird as i couldnt find the points where these connectors go, but I will have a crack at it tomorrow

  5. #5
    Junior Member Too Much Toyota dnegative's Avatar
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    Default Re: 7M-GE MX83 Cressida wire / loom help

    Second lot is the transmission with some grounds and a sensor of some sort under the intake manifold. Ignore the transmission plugs, I've already bypassed the neutral start as you can see.
    You will need to connect up the reverse light sensor from the W58, I never got around to it. Think the blue wire is part of it.

    I cant really remember much else, was a while ago that I ripped the head off. Drain the oil and flush it soon after you start it, a fair bit of shit will be in the sump.

    Radiator and hoses are brand spanking new, I had the AC re-gassed a month before and its fucking cold.

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    Default Re: 7M-GE MX83 Cressida wire / loom help

    Yeah i guess i figured out that the transmission plugs in the 2nd pic i wont be needing as it is for an auto? (i have a w58 behind the block) ...correct me if im wrong haha
    And after putting back the cams, rocker cover, spark plug leads and everything i cant get it to start... doesnt turn over either, i tried pressing the clutch / holding the brakes but still doesnt start
    Any pointers anyone?

  7. #7
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    Default Re: 7M-GE MX83 Cressida wire / loom help

    It's a wiring issue, you haven't connected something.

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    Default Re: 7M-GE MX83 Cressida wire / loom help

    Silly me, didnt plug in the wire to the starter motor haha!
    But i have an even bigger problem... the car cranks but doesnt start, anyone have any advice / suggestions? Or it would be grateful if someone's willing to come look at it?

  9. #9
    Junior Member Too Much Toyota dnegative's Avatar
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    Default Re: 7M-GE MX83 Cressida wire / loom help

    Are you getting spark?
    Dizzy timed correctly?
    Getting fuel?
    Everything plugged in?

  10. #10
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    Default Re: 7M-GE MX83 Cressida wire / loom help

    Checked the ignitor and coil leads and seemed like they were working fine...
    This might be the problem
    I remembered fuel coming out of the fuel lines, the ones that sit on the fuel rail
    Double checked every plug / wire already and made sure they were correct by checking with other cressidas at the wrecker's

  11. #11
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    Default Re: 7M-GE MX83 Cressida wire / loom help

    Pull the plugs, disconnect the coil and crank it. Its the easiest way to see if you have fuel and if its being injected or not.

    Are you sure you inserted the dizzy right?

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    Default Re: 7M-GE MX83 Cressida wire / loom help

    Okay i will try that perhaps tomorrow if i have time, i'm sure i inserted the dizzy right...

  13. #13
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    Default Re: 7M-GE MX83 Cressida wire / loom help

    $1 its the dizzy

    Unless you have done a few its very easy to get it wrong

  14. #14
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    Default Re: 7M-GE MX83 Cressida wire / loom help

    hmm i'll look into that then, cheers

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