Question about 1992 Buick Roadmaster

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Radiator cap Help! I can't get the radiator cap off my 1994 Buick Roadmaster.

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You need to push down and turn at the same time.

Posted on Mar 10, 2009

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1 Answer

Where is the drain plug located on 95 buick roadmaster


I'm not sure which drain plug you mean. The radiator drain plug is at the bottom corner of the radiator on the driver side. The oil drain plug is on the center of the back of the oil pan. There is no transmission drain plug.

Sep 09, 2013 | 1992 Buick Roadmaster

1 Answer

Temperature gauge flucuates and low coolent light comes on, whats wrong?


your antifreeze is low that means you have to fill the radiator and the overflow bottle.the reason the gauge fluctuates is that you have air in the system.with the radiator cap removed,start the car turn the heater on high and let the engine run till the thermostat opens.you will know this as the level of antifreeze will fall,fill the radiator and replace the cap turn off the engine and heater and fill the over flow bottle. you may have a bleeder on the top of the engine around the themostat, but if you dont no worry cause your problem should be solved.

Dec 01, 2011 | 1993 Buick Roadmaster

1 Answer

I installed a new thermostat the blower motor works and i have plenty of correct antifreeze in radiator, wht do i do now?


These were famous for the heater core getting clogged up. They can be back flushed and that may fix it.

Dec 12, 2010 | 1994 Buick Roadmaster

1 Answer

1996 buick roadmaster. temp gauge goes almost all the way up to hot after driving about 10 miles. i'm thinking thermostat?


I assume you have a 3.8L V6. Probably thermostat, but first take a look in the radiator to make sure it is full. Not just the plastic overflow tank, take the radiator cap off and look. Make sure the engine is cold though. The radiator should be full to the top. The way the system works is that as you drive your car, the water heats up and expands and the check valve in the radiator cap will let the overflow go into the plastic tank when the pressure get over a set amount usually 14-17 lbs. When you shut off your engine, the water will be slowly sucked back into the radiator as the engine cools. if the radiator cap is bad, it may not let the water get sucked back into the radiator and the engine will run hot, you will get air and steam bubbles in the engine, the thermostat will work as long as it has water running by it but if a slug of steam goes by it, it will close. "Burping" that engine is a pain but just keep the overflow tank full and check it every time you *start* the car. The air will work itself out.

Nov 18, 2010 | 1996 Buick Roadmaster

1 Answer

1994 Roadmaster Sedan


Did it sound like a small fan running? The Roadmaster has thermal actuated electric fans for the Radiator in some models. If you can see the front of the engine (no fan) then you have electric fans. If there is a large shroud in front of the motor, you have a mechanical fan. The Thermal fans will operate when the car is hot, even after the engine is shut off.

Jan 28, 2010 | 1994 Buick Roadmaster

1 Answer

Under the hood location of the horn?


check by the bottom of the radiator towards the driver side or close to the firewall

Jul 28, 2009 | 1994 Buick Roadmaster

1 Answer

1994 Buick Roadmaster


drain plug is at the bottom of the rad
and you have to fill rad thru coolant tank

Jul 01, 2009 | 1993 Buick Roadmaster

3 Answers

1994 Century Buick Heating problem


did you make sure you got it full of coolent? i am saying this because if you don't it will create an air pocket in the system and it will not throw any heat until you get the air out. on some models there are relief valves either on the thermostate housing or buy the water pump to do this. all that needs to be done is to start car and let it run a few minutes to get warm and open the valve and let the air excape whenyou see a steady flow of coolent close valve and you should have it.

Oct 30, 2008 | 1990 Buick Century

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