Question about 2001 Buick Century

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I have to keep putting coolant in my buick every other day. What could this be?

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  • Michael Fenton May 11, 2010

    this could be one of several things.

    1) you could have a hose with a pin hole in it which will only get worse. ( it will burst when you are 50 miles from home , dark, and raining everytime).

    yours water pump seal may be satrting to leak ( which will only get very bad soon if this is the case ) you hear no new sounds when engine is running?

    or you may have a pin hole in the radiator from a rock being slung up from the highway.

    you could have the starting of the plastic on the radiator begining to fail

    you could have a blown head gasket and coolant is getting inside the combustion chamber.

    you could have a bad freeze plug.

    you could have a bad radiator cap ( easy fix)

    does your reservoir stay full?



    afer running the engine for a bit does your oil look more tan and milky? this would mean the coolant is getting in the oil.. ( i hope not)

    the temperature gauge is always at normal?

    do you smell the coolant at the exhaust pipe?



    hopefully it is just a radiator cap issue or just an upper radiator hose. these would be an easy fix.

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Intake gaskets are leaking. A common problem for this engine.

Posted on Jun 20, 2009

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How do I bleed the coolant on a 94 Buick lesabre?


All cars are much the same as you just need to get all the air out. Make sure you have the heater turned on full and the coolant tank topped up. Leave the top off the coolant tank. Start the engine and leave it idling. Keep an eye on the temperature gauge and the coolant level. The temperature will increase and then drop slightly as the thermostat opens. Top up the coolant as necessary until the temperature is normal and the coolant no longer drops. Put the coolant cap on and take the car for a short drive, say 15 minutes while leaving the heater on full. Top up as necessary once you get home. That should do it, but it is worth checking after each drive for the next day or two. Some cars can be very hard to clear all air and will have one or more plugs on the top of the engine or radiator. If you have those, you can slightly unscrew them to let any air out, but it is rare to find this on a modern car.

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Where is cooling senor on 2004 buick rainner


2_6_2012_9_37_17_pm.gif

Fig. Coolant temperature sensor location on 2000-2005 4.8L, 5.3L, 6.0L engines


2_6_2012_9_39_41_pm.gif
(1) Engine Coolant Temperature (ECT) Sensor
(2) Engine Harness
(3) PCM C1
(4) PCM C2
(5) Powertrain Control Module (PCM) C3

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My 98 buick regal looses coolant I have recently flushed system out, replaced water pump & thermostat but my I keep loosing coolant dont see any leaks i will fill it up & in a couple of days its...


Take look down by the belt tensioner. There are two by-pass tubes that run from the tensioner to the engine. The by-pass elbows have rubber seals on them and after the coolant flush may have damaged or ruined the seals.
The only other option is the coolant is going into the engine oil or transmission oil. Check both oils and see if they look "milky"
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