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Car Forum / Nissan / Nissan Cars / July 200598 nissan se overheats
I have a 98 nissan se. For the last three years, it overheats when the temperature is over 90 degrees and the AC is on. By overheating, I mean the temperature gage goes to the very top of the normal range (I turn the AC off before it goes any higher), and the AC starts blowing out hot air. The garage that maintains my car (not a Nissan garage, but reliable) cannot find any reason for it overheating. They thought the cooling fans might not be coming on, but they come one OK. It has 150,000 miles on it, but the engine seems to be in good shape--just had an emissions test on it and got 0 CO and 0 HC at high speed , and 0 CO and 1 PPM HC at idle. Has lots of pep to it too. The car has a bra, but that does not block the radiator air intake. I have had the radiator flushed per maintenance schedule (bought the car new). A lady in our carpool with a Nissan Maxima of the same vintage has the same problem. My mechanic suggests changing the thermostat (which I will do next time I take it in) -- not likely, but something easy to do, and he's seen stranger things. I was thinking about getting the radiator replaced -- might be suffering from arterioschlerosis, but I don't know why that would be. Surely someone must have experienced the same problem--would appreciate any suggestions--even wild-a.s guesses will be appreciated. Jim Colorado Springs, CO could be as simple as replacing the coolant thermostat > I have a 98 nissan se. For the last three years, it overheats when the > temperature is over 90 degrees and the AC is on. By overheating, I mean [quoted text clipped - 26 lines] > Jim > Colorado Springs, CO Does the second fan come on when the AC is turned on? Thermostats typically fail stuck open (so its unlikely that it is the culprit). Did you just get the radiator flushed recently? You might have air left in the system. You may also consider taking it to an actual Nissan dealership - they might charge more than your preferred independent mechanic, but see these cars and similar problems everyday. They'll be able to diagnose it fairly quickly. Cheers, Nirav 96 Max GLE, 118k Just thought of something else. Replace the radiator cap. Cheap, easy and would be worthwhile on a 7-8 yr old car with 150k on the clock. Just buy a new Nissan one - they run 10-15 bucks. If you go after-market and save yourself a few bucks, you still have an unknown in your overheating scenario. Once you have a new factory part in there, at least you can rule that out as a root cause if the problem persists. Cheers. Nirav 96 Max GLE, 118k Thank-you for your responses njmodi. Actually, I am considering taking it to a Nissan dealer, if this doesn't solve it. I assume from the lack of other responses, that this problem is not common in this model (phew). I no longer work on cars myself (except fixing electrical and mechanical problems in doors, and in things that can be pried apart--I enjoy prying things apart). To me, a lot of parts seem just about impossible to gain access to. And I can afford to pay for a mechanic. Having worked on my own cars in the past, all I can say is that mechanics are worth their weight in gold. And it seems they can usually complete a job in 1/4 the time it takes me. Regards-- Jim I live in Antioch, CA were the summer temperature reaches triple digits easily. Just last month, as the temperature began to rise, I noticed the same problem with my car-happening as recently as this morning with the temperature only being 73-degrees. Have you found a solution to the problem yet? |
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