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Thread: Ae86 oil press/water temp wires...

  1. #1
    Senior Member Vezza's Avatar
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    Default Ae86 oil press/water temp wires...


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    Hey guys,

    In my hastiness to get my wiring conversion done I snipped the 5 pin connector in the engine bay and forgot to label them. I know the first 3, but the two yellow wires, one with black stripe and one with green stripe I assume are for the water temp and oil press senders.

    What I don't know is, which is which? Can someone please check and help me out?

    Cheers,
    Ves

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    Senior Member Sprinter86's Avatar
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    Yellow/green is the temp, yellow/black is the oil.

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    Senior Member Vezza's Avatar
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    Thanks dude

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    Senior Member Vezza's Avatar
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    Thought I'd better ask just in case, will the 20V oil and water temp senders work accurately off the 86 gauges? I've got aftermarket guages waiting to go in... but decided i'd leave all the modding after rego.

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    Veteran slide86's Avatar
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    i have used the 4age 16v sensors on an ADM 4ac 86 cluster and they were working well.

    the temp gauge was at 1/4 at operating temp

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    Senior Member Vezza's Avatar
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    Although we're there any differences between the ADM and JDM zenki dash's, pretty sure they were identical? Just not sure about a 20v.

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    Oil pressure:
    The AE86 uses a oil pressure sender on the block (senses pressure) which is used by the stock oil pressure gauge.
    The car your 20valve came from most likely has a oil pressure switch (on/off), to operate a light on the dash. You need to swap this for the original pressure sender your AE86 came with (or off another Toyota car that uses a gauge, instead of a light). The pressure sender is the big one, the switch is smaller.

    Water temp:
    The water temp sensor that operates your standard gauge is totaly seperate from the EFI, and is just one wire. It should not be too hard to use the exact temp sensor your AE86 came with, maybe from your 4A-C. But it has large threads, (looks like M16x1.5, not sure). The water temp sensor on the 20v uses small tapered threads (same thead as the oil pressure one). The small 20v one will probably work. But on my 20v I have changed the rear housing to a AE86-4AG one, so the stock water sensor just screws in where the start-time sensor would have been.

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    Senior Member Vezza's Avatar
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    TO REMOVE ADS, PLEASE
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    Thanks for the info. Think i'll just swap over the oil pressure senders.

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