Question about 1993 Buick Roadmaster

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1994 Buick Roadmaster

Where is drain cap in radiator?

And,

Besides the overflow reservoir, is there another fill cap hidden on the radiator itself?

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

Posted on Jul 01, 2009

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Posted on Jan 02, 2017

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2 Answers

How do I let the old anti freezer out of a 1995 Chevy Lumina?


Very simple locate the radiator on the car and at the bottom/underneath of the car there will be a drain plug either on the far left or far right of the car's radiator. Just unscrew it and catch the old antifreeze and dispose of it appropriately. Once drained, simply refill the radiator and let it burp a few times then put the cap back on and continue to fill the overflow reservoir to full cold level line. Then start the car and let it run for about 10-15mins continually watching/filling the reservoir until the car is warm and it doesn't seem to be removing any more antifreeze from the reservoir. FINALLY let the car cool completely about an hour or so. And check the coolant one last time, the overflow reservoir that is, make sure it is filled to the full cold level line. NOTE: BE SURE NOT TO OVERFILL OR IT MAY LEAK OUT WHILE CAR IS RUNNING. Hope this helps

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1 Answer

1994 Ford Thunderbird 4.6L V8 has overflow but no radiator cap... how do you refill after draining coolant?


I'm not sure I understand the question. Fill the overflow to the "cold" mark, then fill the radiator and replace the cap. If this doesn't answer your question, can you elaborate?

Mar 13, 2014 | 1994 Ford Thunderbird

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

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

2 Answers

How to drain and refill coolant in a 2004 Jeep 3.7L Liberty?


you drain it from the radiator petcock on the bottom and you fill it from the overflow tank however I seem to remember those cars as having a radiator cap if i'm not mistaken it is on the passenger side if not in is the overflow tank

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How to fill radiator fluid in 2003 suburban 2500


I generally have stopped even looking for the drain...half of them don't work right even when you do find them. Far easier and faster is to remove the lower hose. If you have a closed system with no cap on the radiator then fill through the reservoir, otherwise fill through the radiator and add to bottle after you are finished. Run the heat on high while filling and wait for thermostat to open and level to drop before final fill.

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1 Answer

How to change anti-freeze(coolant) on 2003 buick century


Hello, perform the following steps in this order:
NOTE: car should be cool, in park and on non sloped surface.
NEVER leave used coolant in an area where children or pets can gain access, Anti freeze has ethylene glycol which can be lethal to humans and pets. Used coolant should be immediately taken in a sealed container to a local state certified recycler for proper disposal.
1.Raise front end of car, and place one jack stand under frame of car on the inside of each front wheel.
2.Place a 2 gallon (low profile) bucket under the radiator drain plug. The drain plug will be located at the bottom of the radiator.
3.Unscrew the drain plug and let coolant drain into bucket. (It may be necessary to adjust bucket so no coolant leaks onto the ground.
4.After all coolant has drained from the radiator, tighten radiator drain plug finger tight, then 1/8-1/4 of a turn with a wrench.
5.Unscrew radiator cap and begin filling radiator using 50/50
premixed antifreeze solution.
6.Continue adding premixed solution until fluid is just below the top lip of radiator where cap fastens to.
7.Re attach radiator cap and lock into place.
8.Check radiator overflow reservoir and ensure coolant is between add and full, add coolant as required.
PLEASE VOTE FOR THIS SOLUTION IF YOU FOUND THIS INFORMATION HELPFUL.

Mar 16, 2009 | 2003 Buick Century

1 Answer

Radiator cap


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

Mar 10, 2009 | 1992 Buick Roadmaster

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