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2001 Nissan Xterra 3.3 v6 I can see the coolant drip on the ground but cannot see where it is coming from, any ideas suggestions? , also it overheats and does not replenish from the over flow. Please help

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    I would suggest you slide under the car and figure out where the coolant is leaking from. It could be as minor as a loose hose clamp, as slightly less minor as a cracked hose, or as major as a cracked block. Either way, this is NOT the kind of problem you want to ignore - the only way to fix it is to find the source of the leak. Good luck! Sep 6, 2016 at 21:30
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    on the 3.3 there's a coolant tube that runs under the intake manifold. the heater hoses run off that tube as well. check the clamps and hoses.
    – Ben
    Sep 6, 2016 at 22:17
  • I looked under and saw a 5/8" open ended hose that it looks like the coolant is coming from. Any ideas?
    – Jjk4845
    Sep 7, 2016 at 1:44
  • Can you post a photo?
    – dlu
    Sep 7, 2016 at 2:12
  • Yes, first thing in the morning.
    – Jjk4845
    Sep 7, 2016 at 3:22

3 Answers 3

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I'm going to guess that it is from the heater hose that goes from the engine to your cabin A/C. The overheating is from the lack of pressure due to the leakage and air getting into the system. The lack of renewing from the overflow container - same thing - when the system is cooling down and normally the pressure drops - then it normally sucks back in coolant from the overflow. Since there is leakage, there isn't a drop in pressure.

If this is the case, you should be able to track it down, check the hose clamps. If you are in a temperate zone, you should be able to run a hose to bypass the A/C if the leak is within the cabin and you don't feel like tearing out the dash to get at it.

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Are you sure it is coolant, the hose you describe sounds more like the A/C condensate drain.

The overheating is another problem…

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It is none of the above . Between fire wall and engine there is a hose 5/8 it's called by pass hose it's in tight place takes time to replace we have done it.

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