Question about 1993 Buick Regal

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There is oil in my coolant overflow of my 93 Buick regal. The car has not over heated and there is no coolant in the oil when I drained it. Head gasket or could it be something else?

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A common problem is the intake gaskets. Have the system pressure tested or look at the front or very rear of the engine and see if there is coolant leaking down. The gaskets for this engine are about $100 in a kit and the labor takes about 4 hours to complete. You will also need to replace the oil, filter, coolant, and if you need instructions, let me know.

Posted on Jul 16, 2010

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Posted on Jan 02, 2017

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1 Answer

After changing water pump on my 93 buick regal 3.8..The coolant is going somewhere and both coolant and engine light are coming on but its not getting hot..


i suggest your head gasket is worn out or there is a leak sumwhere but first check your oil n see if its not mixing with water

Oct 21, 2012 | Cars & Trucks

2 Answers

My low coolant light flashes on and off then it will stay on.I have checked my coolant level it is good what could be the problem? 1999 Buick regal


Make sure you are checking the coolant level in the radiator as well as in the overflow tank. The sensor is located in the radiator, so if the level in the overflow tank is good, it could still be low in the radiator.

Dec 06, 2010 | 1999 Buick Regal

1 Answer

How do i replace a heater core in a 1993 buick regal?


Hello. Remove air cleaner and duct assembly. Drain coolant. Remove both heater hoses at the heater core. Remove right and left instrument panel sound insulators. Remove rear compartment heat duct adapter bolt/screw and adapter. Remove heater outlet duct bolts and duct. Remove heater core cover. Remove heater core.

Jul 31, 2010 | 1993 Buick Regal

1 Answer

Car runs fine for a while the cuts off without warnig must cool off for 15 or20 minuits before it will restart 1993 buick regal 3.1 engine


I have seen that problem occur when the engine heats up, developing pressure in the cooling system and antifreeze leaks out into the air intake or cylinders. This might be a blown head gasket or coolant leak in the intake manafold.

Jun 01, 2010 | 1993 Buick Regal

1 Answer

1999 Buick Regal has two distinct problems. 1.


Sounds like you have a blown headgasket,check the coolant in the radiator and if you find oil in it you do need a headgasket.

Dec 14, 2009 | 1999 Buick Regal

1 Answer

97 Buick Regal - Fill Coolant Light came on, the tank was drained to the bottom. When I fill up the radiator reserve tank the fluid is coming out of a small, 1/2 inch diameter maybe, black rubber hose...


The heater core inside the passenger compartment is leaking. The water is draining through the Air Conditioner condensor drain tube. Don't plug the drain tube, the passenger side floor will get wet.

First, drain cooling system (or be quick) and disconnect the two heater hoses that are going into the firewall and splice the ends together with a 5/8" garden hose splicer.
The leak will stop, but your heater will not heat the interior.

Replace the heater core....

Oct 01, 2009 | 1997 Buick.5 Regal

3 Answers

Why does the radiator fluid in my 1991 buick regal look like chocolate milk?


1-If you open your oil cap and seeing a milky stuff at the inside cap, then there is a leak in head gasket. coolant mixed with oil through head gasket leak then vaporize leaving the milky stuff at your cap. 2-If you don't see it then there is possible transmission get into water. When you are running, the pressure from transmission is higher than coolant pressure so it leaks into your coolant thru transmission cooling coil in the radiator. 3-Need to address this as soon as possible since chance of car not running in the middle of a trip is high also consequences of problems are more costly. Good luck.

Jul 12, 2009 | 1991 Buick Regal

1 Answer

Low Coolant light flashing on 1996 Buick Regal 3.8


The low coolant sensor should be located in the passenger side radiator tank, You need to take it out and clean the sludge off of it for it to work right. Or you can just unplug it and forget about it, the light will go out and it won't cause any problems.

Mar 01, 2009 | 1991 Buick Regal

2 Answers

How to replace a crank sensor on a 93 buick regal 3.8L engine


Im assuming this is the Series I 3800? If so, if you can email me I can send you some directions on the process. Its for a Series II 3800 but it should be similar. If you cant email me, post up and I'll see what I can do.

Dec 29, 2008 | 1993 Buick Regal

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