Question about 1988 Nissan Pulsar

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Overheating problems I have had nearly my entire water cooling system replaced, radiator cap, radiator, thermostat, and i have even had the water system flushed. I first thought my first thermostat was faulty, as when i took it out, and ran the car without it, it was fine. I bought a higher quality brand for my next one, and again the same problem, 2 days after i have replaced the thermostat, i have found i overheated within just 3km of driving. I have even had my head gasket replaced (it did have a leak in it) so i know that is fine.. Any ideas on what could be wronge?

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  • firerydemon_ Jun 26, 2009

    Yea lol.. i thought that too. but no, the fans are working and also blowing the correct way. I would check the thermostat, but it comes in a housing when i buy it. The housing can only bolt on one way, so it has to be the correct way around..

    ideas appriciated thanks.

  • firerydemon_ Jun 26, 2009

    i had the head checked recently, (when i had the head gasket replaced). Timing was checked recently too. The water pump, now thats the only thing i havent looked at, but to my knowledge, i have found that when they play up, coz these particular ones are run on the timing belt, become noizy if they are not pumping correctly. I had to do one on my sisters car a while back, same car same engine.

  • stefz34 May 11, 2010

    is the cooling fan(s) coming on as the temp rises?

  • paul marshall May 11, 2010

    is it possible you put the thermostat in backwards?

  • Colin Stickland
    Colin Stickland May 11, 2010

    are you putting the thermostat in the right way round??

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Possible cracked head, timing, water pump are the only other things left to check

Posted on Jun 26, 2009

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Water pump impeller has come away from drive shaft ,its plastic and thay often just come away from spindle

Posted on Jun 27, 2009

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Not comon but i once saw a water pump that seemed fine but the fins had all worn down smooth so in the coolant all there was is a round disk that didnt do anything.

Posted on Jun 26, 2009

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