Question about 1988 Nissan 200SX

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Engine over heating

My nissan 200sx is constintly overheating the fan works fine, only seemes to happen when i drive her on a bit..any ideas??

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Make sure your radiator cap is in good condition, your vehicle's cooling system works on pressure really, to raise the boiling point.

Other than that, fill your cooling system with a 50/50 mix of coolant and water, and cycle it (run the car at idle) for a good 15 to 20 minutes.

Make sure the thermostat is opening. I have had a couple that wouldn't open until 240 degrees!

Finally, make sure you've gotten all the air out of the system. A common problem with most modern vehicles is air can get trapped in the cylinder head and intake manifold, the highest point of the cooling system. The air pockets make a small problem seem a lot worse. Air insulates, coolant draws heat, so you get a small area that heats quicker than the surrounding areas. Look for a small screw that looks like a brake bleeder, some cars have air bleeds on the top of the water pump or intake manifold. This will help you push the air out.

If all this doesn't help, consider taking the car to a local oil change shop and have the coolant force-flushed... this will push coolant into areas that just pouring it in can't reach.

Posted on Jun 29, 2008


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Posted on Jan 02, 2017


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