Question about 2002 Nissan Xterra

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Xterra overheating Sorry I don't understand. What does heads have to do with overheating?

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  • Dave Aug 10, 2008

    Shoudn't I be getting coolant leakage as well if the heads were warped?

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If they are warped they will cause the vehicle to overheat. if youve run it hot at all it could have made the heads warp.

Posted on Aug 10, 2008

  • Ronnie Houston Aug 10, 2008

    no not neccessarily...it will make the engine run hot if they are warped and then you will lose the head gasket.if you have any white smoke from the tail pipe or water in the oil you are on the way to the head gasket going out on the vehicle. i would bet your heads are warped though

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1 Answer

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2001 xterra overheating


Hello, inghamchris4 and thank you for asking your question on Fixya!

Here is a simple process that will walk you through a few steps that will pinpoint the overheating problem on your
2001 Nissan Xterra, without even using any tools. It has helped millions of people, and I am certain that it will help you, because I wrote it for people in your exact situation.
How to diagnose your overheating
2001 Nissan Xterra

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Thanks for the vote, and good luck!

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1 Answer

I have a 2001 nissan xterra 6 cyl I have replaced the thermostat and still its overheating. What is the next step?


I can't believe that your radiator is shot, it's a new truck. How about clogged? How about full of bugs or hay in the front? How about the coolant? Are you running coolant or water? Look for white smoke or steam coming out the exhaust after it warms up. This you don't want to see. I would get it to a radiator shop and have them check it for a blown head gasket. They will be able to tell what's happening.

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1 Answer

Block liner crack


Most cracked blocks will put the coolant into the crankcase and you would see a milky colored oil. Thoough it can also crack and allow the engine to burn the coolant. In this case, at the rate you are saying the overheating is occuring, you should easily be able to see white smoke from the exhaust.

More than likely than not the cylinder is pressuring the radiator causing the overheating, you can verify this by removing the radiator cap with the engine cold and placing the palm of your hand where the cap was. Start the engine, within less than a minute you will likely notice pressure building.

This can be caused by blown head gaskets, cracked heads or cracked block. The way to diagnose a cracked head/block is to disassemble it and send it to a machine shop capable of doing a magnaflux on the part.

It sounds like they stood behind thier repair and did the right thing with the second repair.
So your options are to pay to have a second shop diagnose the problem or believe the first and replace the engine and or car.

Sorry about your misfortune.

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