a have a nissan xterra 2006 that give me a problem of temprature . what should d on 2006 Nissan Xterra

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it also have a fonny sound when driving on not smooth place
(2) Answers
Is it over heating or not getting hot enough? We need more info to be able to advise. Funny sounds on rough roads you say? What kind of funny sounds? Are these funny sounds coming from the drive train, suspension or interior?