Question about 1995 Buick LeSabre

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How hard is it to change the water pump on my 1991 Buick Regal 3.8 engine. It is not leaking but car keeps getting hot, I have changed the radiator

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  • Kelly
    Kelly Sep 12, 2010

    I am not posting this as a solution. Have you changed the thermostat UNDER the engine top hose connection to the engine water manifold? If you have changed the Thermostat and radiator yet it is still getting hot then you are correct in asking how to change the water pump. A few other things to check... Electric fan or Engine driven fan since it is a 1991 I am assuming yours is still an engine driven fan. Either one can cause it to heat up in ttraffic. Lastly... a head gasket can mask as an overheating problem. Cold start radiator cap open / off a bad head gasket will cause water to gush out of the radiator or the tail pipe to appear light in color.

    Just some passing comments on my part. There will be other Experts that will assist you.
    Kelly

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Hi, I own a 1994 Buick LeSabre which is very similar to the 1995. I have replaced many water paumps on several other cars; however, the 1994 LeSabre water pump was a little more compicated. Basically, it is very straight forward. The only problem I encountered was that I had to remove the motor mount bolts and jack up the engine about 6-8 incles. This was necessary to remove and then repalce the water pump. Buick engineering designed the car so that the car's frame was directly in the way of 2 bolts. This procedure muct be done to repalce the water pump. Hope it helps!

Posted on Jan 08, 2011

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The pump is not that hard to change but if you haven't tried a new thermostat yet then i would suggest that you try that first,it is the most common cause of overheating problems,next being the rad fan it's self not coming on either because of a bad motor or a temperature sensor failure or a defective relay.Let me know what you have eliminated and we can go on from there.

Posted on Sep 12, 2010

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1 Answer

How do I know if my water pump is bad. My 1998 Buick regal will not keep water in radiator. I thought it was the heater core but my floors do not get wet so now I'm not sure if its the heater core?


There are a number of possibilities. Does the car overheat? It can be a blown head gasket. To check this, open the radiator cap (not the plastic filler bottle, I mean the metal cap on the radiator itself).
Put your nose close to the opening and smell the water. If it smells of exhaust gas, you have a blown head gasket.
Another check is to pull out the dipstick and have a look at the colour of the oil in the sump. If it has a grey colour, you have a blown head gasket.
The first place to look however is check on the floor after you've driven the car for a while, and see if you can see water dripping to the floor, or if you open the hood immediately after a longish drive, check for steam which could indicate a bad head gasket that did not blow into the water chamber per se.
Steam from a hot engine will also indicate leaking radiator hoses or a leaking water pump.
If you suspect the water pump, again, open the metal radiator cap and fill the radiator to the top. Let the engine idle until it is hot, then rev it a bit. If the water pump is working, you will see the water inside the radiator circulating. Just make sure the engine is hot, else the thermostat will prevent the water from circulating.
An extra bit of information, if you can see the water circulating and also notice bubbles in the water, it is an indication of a leaking head gasket.

Oct 08, 2014 | Cars & Trucks

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

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1 Answer

1990 Buick Regal overheating


You have leaking engine cylinder head gaskets, this may be the cause of the overheating or a result of it, replace the head gaskets and have the radiator cleaned by a by a radiator repair shop, that should cure the problems.

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1 Answer

I have a 1991 Buick Century 3.3! Its been running hot. I know its not a blowed head gasket. I have changed the thermostat and put a new water pump in it... Could you give me some answers of what it might...


Sounds like you've covered all bases.
I'd look for a pinhole leak somewhere...especially all seams of the radiator
and / or check your timing as well.

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1 Answer

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CLUTCH ON COOLING FAN FREEWHEELING. COOLING FAN SHOULD HAVE RESISTANCE WHEN TURN WITH HAND WHEN ENGINE HOT.IF NOT FAN FREE WHEEL FAN CLUTCH NEEDS TO BE REPLACED.IF COOLING FAN OKAY.YOU COULD HAVE BLOWN HEAD GASKET.YOUR RADIATOR AND ENGINE BLOCK NEED FLUSHING OUT.CHECK WATER PUMP FOR LEAKING WEEP HOLE IF LEAKING REPLACE WATER PUMP.

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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

Car won't run when hot


It could be neither, If your engine is getting too hot, it can be in the cooling system, like the water pump, radiator, belt and the like, or engine timing may be off, and so forth. You even may have low coolant or a head gasket problem or cracked head, depending on the diagnostics. Just changing the spark plugs by themselves will not make the engine run hot, and while you can have ign module, etc failure when the engine is at normal operating temperatures, they by themselves should not make the engine run hot. Hope this helps you, Rick

Apr 24, 2009 | 1995 Buick Regal

1 Answer

1991 buick regal starting and running problem


Sounds like your car is overheating. If you have a temp gauge it should show that. If you just have an idiot light, by the time it comes on it's already too hot to operate. AFTER the car is cooled down, open the radiator cap to see how much coolant has been lost. Chances are there is alot missing. Add WATER (no sense in adding coolant if it's going to leak out) and idle the car at home. Look underneath as it warms up to find where the leak is.

Apr 05, 2009 | Buick Regal Cars & Trucks

1 Answer

Antifeeze leak on my 2000 VW Beetle Turbo


Most likely a leaky gasket. The water pump is a likely candidate, but also could be from a bad radiator hose/thermostat connection. Would suggest washing down the engine with a hose connected to the hot water. While the engine is cold use the hose to wash off the oil & grease deposits and old antifreeze. Allow the engine to dry without running the car. Once dry start the car and be prepared to look for the first sign of a leak. Sounds like a dealer issue since there is very little work clearence between the front of the engine and the car body. Barely enough room to be able to change the serpentine belt.

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1 Answer

Leaking anti-freeze from under the engine


More info needed. Is the leak coming from around the pass side of engine, drivers side of engine, radiator area or firewall area. A specific quadrant of the engine compartment would help narrow it down some. if it is leaking from the engine itself, there may be some expense in repairs (water pump possibility here.) Hoses usually are not that hard or difficult to replace. Radiators get real expensive real quick. Please update Engine compartment Quadrant if possible

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