Question about 1995 Buick Century

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The fan is not turning on my buick and it is causing the engine to overheat when i sit still at a light. What is the problem.

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You will need to put 12v to the fan plug to make sure the fan is still good it should spin if it is good when 12v is applied.If it workes you should change the temp sensor for the fan which is located on the engine where the upper radator hose connects to the engine.The switch you should see if you look in a little bit on the drivers side of the car in the front.

Posted on May 09, 2010

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My 95 buick low coolent light is flickering on/off, she gets hot quick if im standing still. Water pump was replaced last year. last night the light came on onsc and now tonight its flickering all the time...


with the engine running and at operarating temperature,underneath the front of car? do you see fluid running onto the ground?with engine running hot standing still,,is your coolant fan coming on? you should see it turning on the front engine side of the radiator.visually. ok check this also with engine running, turn the a/c on does the other fan come on when you turn the a/c on? if so,then the a/c fans ok. when your engines running,and it overheats sitting still,do you see at least one fan moving? if not,turn the engine off. try turning the main cooling fan by hand.if it does'nt turn easily,it's bad or locked up.does it wobble when you try to turn it? if so,it's bad. if none of the above,open the main fuse panel under the hood,check main fan relay,or fuse ,for fault. the thermostat may be suspect also.you've had the thermostat replaced already,but when you start the engine and run it,does the main engine fan come on to do it's job? if it does,then i would suspect a bad thermostat. easily replaced at a small price for part,minimal price for labor.$40.00 for thermostat replacement is usually high. $15.00 for part is usually a high price.try auto zone.advance auto parts. never replace w/used thermostat! thank you for choosing fixya.com

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It could be many things. Low coolant, fault thermostat, a blockage in the system, worn or broken water pump impeller, slipping belt on water pump pulley, the cooling fans may not be operating (this could be a faulty temp sensor, fuse, relay, wiring or the fan motor itself).

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My sklyark is overheating. I changed the thermostat and the starter! WTF is wrong???


Check to see if there is water in the oil...If there is water in the oil then it could have a head gasket problem...Excessive exhaust backpressure because of a clogged catalytic converter could also cause overheating..Also check belt tension and condition. A loose belt that slips may prevent the water pump from circulating coolant fast enough and/or the fan from turning fast for proper cooling...Another thing it could be is a faulty Water pump -- Any wobble in the pump shaft or seepage would call for replacement. In some instances, a pump can cause an engine to overheat if the impeller vanes are badly eroded due to corrosion or if the impeller has come loose from the shaft. The wrong pump may also cause an engine to overheat. Some engines with serpentine drive belts require a special water pump that turns in the opposite direction of those used on the same engine with ordinary V-belts... Also check the Fan -- With mechanical fans, most overheating problems are caused by a faulty fan clutch, though a missing fan shroud can reduce the fan's cooling effectiveness by as much as 50% (depending on the fan's distance from the radiator) which may be enough to cause the engine to overheat in hot weather or when working hard.

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