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laidbackluke

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    The overheating probelm that has baffled the Zed Shed

    in 350Z Technical

    Posted

    Well....we worked out what it is....head gasket :(

     

     

    Sent from my iPhone using Tapatalk

     

    Aww mate dont tell me that! Iv just driven her 2hours with no overheating and temp coming through fine in the cabin.. Would you mind pm me how much it cost to fix and what was involved?

     

    I'll keep you updated mate

     

     

    Sent from my iPhone using Tapatalk

     

    Im doing an oil change on monday to see if theres anything leaked in with it.. how long do you drive before it overheats in yours?

     

    A matter of seconds mate

     

     

    Sent from my iPhone using Tapatalk

    The overheating probelm that has baffled the Zed Shed

    in 350Z Technical

    Posted

    Just a quick update guys.

     

    This morning the temp gauge rose to a touch under the overheating level then dropped off, it did this a good few times on the drive to work, with no hot air coming through the cabin.

     

    I know this is a common symptom of an airlock however we bled the system again without the thermostat in and it was running fine with hot air coming into the cabin.

     

    odd question i know but is there something that would cause an airlock to reoccur?

    The overheating probelm that has baffled the Zed Shed

    in 350Z Technical

    Posted

    Im not sure about the sensor mate however id guess its pretty bang on as when its overheating you can hear the water boiling and steaming out the top of the expansion tank.

     

    as for the pump wouldn't that cause less pressure to build anyway, thus keeping the thermostat open allowing the water to flow? it really seems like once under load the thermostat decides to close as like Chris mentioned the lower pipe into the radiator goes stone cold

    The overheating probelm that has baffled the Zed Shed

    in 350Z Technical

    Posted

    Evening all,

     

    right we have a quite a doosie for you guys.

     

    as you may all know buster and keyser being the heroes that they are very kindly fixed up my car and got me back on the road before Xmas.

     

    A few weeks ago however, one of the coolant hoses popped off (the small on located to the left of the plenum, tucked behind the larger one) it looked to be just because the clip wasn't quite secure, anyhoo, i popped it back on, topped up the water and away i went.

     

    Since this though the car has been overheating, the boys put it down to an air lock and bled the system only for the same thing to happen again...and again :(

     

    last Sunday the Zed Shed took a little road trip out to Dorchester to try and solve the problem, we took out the thermostat to find it was pretty worn, so to get me on the road again without overheating removed the thermostat.

     

    now is where it gets annoying....

     

     

    After testing a spare thermostat to ensure it was working we fitted it back into the car. When ticking over its fine, nice and warm in the cabin and the temp gauge is sat normally. However after a few minutes of driving the cabin goes stone cold and the car overheats again.

     

    There's no symptoms whatsoever that point towards the head gasket, and Ive been driving it this week for a good few miles with no troubles, bubbles or signs of oil in the water.

     

    I hope this all makes sense!

     

    If anyone has any ideas at all please let me know and both Chris and Bob are verging on chinning me because we cant work out what it is.

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