Question about 1986 Buick LeSabre

2 Answers

Water pump bad on 86 buick lesabre

I have an 86 lesabre, 3.8, 6 cyl., that the serpentine belt came off while i was driving. Turns out, the water pump pulley was loose and wiggles up down and sidways. There is also coolant running from water pump. Question is, how easy is it to replace the water pump? I have basic hand tools, but the car is at my workplace parking lot- i don't want to try tearing 1/2 the engine down, if I take a long time they will make me tow it.
1. how long should it take for a non-mechanic who can do a good tune-up but not rebuild an engine?
2.once it's done, do i need to flush coolant? I'll need to drive it about 10 miles to get to a place I can flush & I'm worried about metal shavings in coolant system.
3. Thanks for the help!!

Posted by on


2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert who has answered 20 questions.


    An expert that has over 10 points.


    An expert whose answer got voted for 2 times.

  • Expert
  • 47 Answers

Which way is the motor facing? Is it front will drive or rear wheel? If the motor pullys are facing towards the front of the car you may need to take out the radiator for more excess and if its pointing towards the wheels or the fenders then you need to take off the wheel and maybe the Black inner fender covers to get more room. After that it should be pretty easy just some bolts and when you put the new one on make sure to put some sealant on the pump to make it water tight like around where the blots go on the flat part. It should only take a few hours or less but take your time and make sure you do it right. You will have to flush it though to get the bad **** out. so bring lots of water and when you get it home flush agian and put coolent in it. k hope this helps and also it helps to get a book like a chilltons or a Haynes book on your car cus that explains how to fix anything on your car and shows step by step. well hope it all works out for you.

Posted on May 10, 2009

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.


    An expert whose answer got voted for 20 times.


    An expert who has written 20 answers of more than 400 characters.

  • Expert
  • 157 Answers

It should be a friont wheel drive car. First thing, look directly in front of the water pump. The bolts that hold it on are about 5 or 6 inches long, so if there is a motor mount in the way, you may have a bigger project that you would want to tackle. If you can get the bolts out, find a big basin to catch the coolant.

1. One to two hours max if you are a little bit mechanically inclined.
2. Not really, unless the color of the coolant is rusty or dirty looking. The usual coolant color is a greenish yellow. There is another kind that looks orangish. If it has oil in it, there are probably bigger problems and I would probably have a mechanic look at it.
3. Your welcome!

Google is your friend! Search for a manual online to help you. There are prolly a lot of places that say free manuals, and I am sure you know what that REALLY means, lol. Just dig through all the ****. Your library may have a copy there also. Some parts places have them, and AUTOZONE has online manuals, free, but you have to sign up. I forgot all about them, I have been signed up for a few years, and get no spam, but today I opted in for a couple newsletters. Hope this helps!

If you do replace it, get a decent 5 in 1 or 6 in 1 scraper, usually in a paint department at a place like Home Depot, to scrape the old gasket off the engine.

Posted on Jul 28, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Power steering resevior for a 1999 buick lesabre

Yeah, that's a fun one but not as bad as you think. Make sure the car is cool because if not..... well you'll see. Anyway, you'll be on the passenger side of the car looking at the engine. Look to the left of the water pump pulley and behind the serpentine belt. look straight down or you'll miss it. It's a black cap with red lettering.

Aug 31, 2014 | 1999 Buick LeSabre

1 Answer

1998 Buick Le Sabre - Water pump needs to be replaced, Serpentine Belt constantly slips off and its overheating

The dealer cost is about 475 and a shop cost is 385 and do it yourself is 106,since your getting other work done means it sounds fair,3 hours to do water pump.Here's a link on doing the water pump. Repair Guides Engine Mechanical Water Pump AutoZone com here's the water pump. Water Pump 1998 Buick Lesabre 6 Cylinders 3 8L SFI OHV AutoZone com plus a gallon of extended life antifreeze full strength.And a tube of sealant and gasket.

Feb 01, 2014 | Buick Cars & Trucks

1 Answer

Is the 2002 Buick Rendevous 3.4L CXL water pump driven by the timing belt?

no, it runs on the serpentine belt:

3.4L Engine

  1. Before servicing the vehicle, refer to the Precautions Section.
  2. Drain the coolant from the engine.
  3. Remove or disconnect the following:

    Negative battery cable Serpentine drive belt guard Loosen the water pump pulley bolts Serpentine drive belt Water pump pulley Water pump Water pump gasket

To install:
  1. Clean the gasket mounting surfaces.
  2. Install or connect the following:

    Gasket Water pump. Torque the bolts to 89 inch lbs. (10 Nm). Water pump pulley and hand-tighten the bolts at this time Serpentine drive belt Water pump pulley bolts to 18 ft. lbs. (25 Nm) Serpentine drive belt guard
  3. Fill the cooling system.
  4. Start the engine and check for leaks, repair if necessary.
  5. Road test the vehicle and verify there is no air in the cooling system.

Sep 29, 2010 | 2002 Buick Rendezvous

1 Answer

Dont know how firing order works with a 86 buick Lesabre dont know witch 1 is 1 2 3 4 5 6 ect

I havent touched that engine before nearly all 6 cyl engines are

1-5-3-6-2-4 ....

but google it there are tones of answers on there

Jun 21, 2010 | 1986 Buick LeSabre

1 Answer

1995 Buick LeSabre with a leaking water pump.

The water pump removal is a breeze on this vehicle. First remove your four bolts that hold the pully to the pump, then remove the serpentine belt. Next remove all bolts from water pump, now the fun part, pry the housing of the water pump off gently trying not to nick or gouge the engines placement for the housing. now all you have to do is make sure the housing is clean of all debris or old gasket material, you wouldnt want any of that gunk getting inside. nowplace your gasket properly on new water pump and place on housing. make sure the gasket fits nicely. reinstall pully to water pumy, reinstall your serpentine belt, place new antifreeze, I prefer the peak green full strength, make sure to mix correctly also. start engine let run for 5- 10 minutes and then let cool down and check levels. hope this helps.

Jan 27, 2010 | 1995 Buick LeSabre

1 Answer

Torn Serpentine Belt. Bad belt driver

You say belt driver? The belt runs on a series of pullys, there should be a pic./diagram on the radiator support that shows the routing of the belt. simply take the belt off and check each pully( they will either drive the belt or be idlers/tension pullys)to see which one has any "side to side" motion. If it is on a "driver" you are looking at replacing that part(water pump,power steering pump. etc.), as the real problem will be a bad bearing in that unit.

Oct 12, 2009 | 1997 Buick Century

2 Answers

Diagram needed

HELLO THERE: Here is a link that will help you out ok dont forget to rate this soultion this helps me out too 1994 buick lesabre serpentine belt removal 1994 buick lesabre serpentine belt removal. Custom made wrestling belts ... money belt zipper. chest injuries from seat belts. serpentine belt diagram 30 mitsubishi

Aug 15, 2009 | 1994 Buick LeSabre

1 Answer

2000 buick lesabre - water pump replacement

first disconnect the battery then check how the serpentine belt is lined up so u can take it off and put back on. Then the pump should be on the side of the motor with 9or12 bolts there could be more! after taking out take razorblad and skrap the old gasket clean wipe of then put new gasket and pump back on dont over tighten the screws cuase the pump my be aluminum.

Mar 17, 2009 | 2000 Buick LeSabre

Not finding what you are looking for?
Cars & Trucks Logo

145 people viewed this question

Ask a Question

Usually answered in minutes!

Top Buick Experts


Level 3 Expert

80531 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

Are you a Buick Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides