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Thread: A few Questions about the 240z

  1. #1
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    Talking A few Questions about the 240z

    Hey Everyone!

    I just purchased a 1972 240z a few days ago and I love the car! Its a blast to drive! I just have a few questions. I am a bit of a novice mechanic but I am willing to try working on just about any aspect of the car but electrical. The whole electrical thing makes me nervous.

    And here are my few questions---

    Oil Pressure Gauge is a little wacky. It stays at 90 when I first crank it up in the morning and will eventually go back down to about mid way after the car gets a chance to warm up. Though I noticed today that it shot back up after an oil change but came back down. I revved up the car and checked to make sure the oil filter did not buldge and I am fine there. I did notice some of the wires looked a little corroded so could that be it?

    Also I noticed when I turn on my turn signal (either direction) that my Amp gauge fluctuates in time with the turn signal. Could corroded wires be an issue there too?

    That is all I have for questions so far. Also is there a trick to using the search option? I tried to use it but I got way too much back and not the right kind of info!


  2. #2
    Must be the torque curve kmack's Avatar
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    Quote Originally Posted by Truckin1972
    Oil Pressure Gauge is a little wacky. It stays at 90 when I first crank it up in the morning and will eventually go back down to about mid way after the car gets a chance to warm up.

    Also I noticed when I turn on my turn signal (either direction) that my Amp gauge fluctuates in time with the turn signal. Could corroded wires be an issue there too?
    Your oil will be thicker on start up due to the oil being cold. That equates to a higher oil pressure. (It's harder to push thicker fluid through the passages) Mine does it, too. If you're worried about the actual pressure, an aftermarket guage will fit into the stock location.

    As for the Ammeter "flicker", another typical deal with these cars. Since guage is wired directly into the electrical circuits, any fluctuation in the power will be reflected in the guage. That's just the way wires run. I'm not an electrical person by any means, but that is what I've read and been told.

    Also, corroded wire connections will always be an issue with an older car. It would be a good thing/benefit to clean up every connection you can get to. Especially on the fuse block.
    "When life gives you lemons, make lemonade.
    Then find someone who's life gave them Vodka and have a party!"

    KMack
    '71 240Z (Series I) - SOLD
    San Antonio, Tx
    www.geocities.com/kenshobnob
    www.geocities.com/vintagericeracing

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