Question about 1997 Nissan 240SX

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I have a 1997 nissan altma and the cooling fan has started running often even though car has nt run long, temperture hand shows overheating but car is not out of coolant

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The first thing that you should do is replace the thermostat.

Posted on Mar 15, 2011

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There might be a problem with the thermostat not allowing, or restricting the flow of coolant. Or your radiator might be full of deposits(deposits are caused over time by the insides breaking down, ie:metal) a radiator flush might be all you need. Some places offer this for fairly cheap, round $40. Some places charge alot because they can not recycle the coolant. Inquire with your local auto-parts store and see if they have any other recomendations? Advice is almost always free, and most of them can point you in the right direction of who might be the cheapest for good quality work in your area.

Basically, a radiator flush involves draining your old fluid. Putting in new fluid, running for a bit. Draining again, then filling with new fluid! That's about it.

The deposits in your radiator are blocking the holes for the coolant to flow through, thus there is less coolant flowing through the radiator to cool off before it goes to the motor to cool it off!

I hope this helps, and hope this is all your problem is! Good luck!

Posted on Mar 15, 2011

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