If all else fails, and the mechanic thinks it is indeed the transmission, maybe risk the expense of a proper service. A mechanic could probably take it for a drive and tell you with some certainty if the problem is in the engine or transmission. It might be the engine isn’t working correctly. There’s a possiblity this isn’t the transmission at all of course. Transmissions are so complicated very few driveway amateurs would attempt to do any serious repair or diagnosis of a modern automatic transmission beyond a simple, proper service, which means to drop the pan, clean/replace the filter, and refill with the proper fluid. The side with the lowest level is the one to use.Īll that said, it wouldn’t be that unusual for an automatic transmission to begin to show signs of failure at the 10 year mark. Usually there is a procedure you have to follow to the T, like drive it a minimum number of miles, coolant temp up to normal, then park it, push on the brake, and go through all the gears in a specific order, return to Neutral or Park, and only then check the dipstick, either with the engine off or on, depends what they say, making sure to look at both sides of the dipstick. It isn’t a simple thing to do with modern cars, and car owners often don’t take the time to do it correctly, and have problems as a result. One thing I might suggest, be sure to follow exactly the owner’s manual method for checking the transmission fluid level. If you notice an oily surface in your coolant, immediately have your mechanic inspect your Century for head gasket leakage.Assuming check engine light isn’t on, and routine engine maintenance is up to date. I first replace the thermostat, then took it to autozone for the obd and it pulled the code for the coolant temp sensor. You can do this by opening the hood and locating the coolant reservoir. Within the last week I’ve gotten AC off due to high engine temp and the gauge stays on the cool side. The primary thing you should do is check the coolant level in your vehicle. Taking off the coolant reservoir cap on a warm engine could cause the cap to up explosively and fluid to spray out of the reservoir. My temp gauge has been fluctuating recently. See our video on how to add engine coolant for tips on adding coolant to your Century.Īlways wear safety goggles when working on your Century. If you need to add anti-freeze, be sure to check your owners manual to determine the correct type of coolant to add - in Buicks, it usually located in a section titled Fluid Capacities towards the end of your manual. On Thursday, the low coolant light came on on the way to and home from work. The video above shows you where the coolant reservoir in your Century is located and how to check the coolant / antifreeze level. Engine coolant / antifreeze circulates through your engine to keep it cool in the summer but won't freeze in the winter. In order to get an accurate reading, your 3.1 liter engine should be cool to the touch when you check it. Checking the engine coolant (also known as antifreeze) level in your 2002 Buick Century is pretty easy. your buick century has a low coolant level sensor located in the passenger side of the radiator, sometiomes the sensor get covered with coolant sludge and will show that the cooling system is not filled, sometime the radiator is just still low on coolant.
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