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

  • 1
    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! Commented 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
    Commented 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
    Commented Sep 7, 2016 at 1:44
  • Can you post a photo?
    – dlu
    Commented Sep 7, 2016 at 2:12
  • Yes, first thing in the morning.
    – Jjk4845
    Commented Sep 7, 2016 at 3:22

3 Answers 3


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.


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

The overheating is another problem…


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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