Question about 1991 Buick Park Avenue

2 Answers

Low Coolant Light

The low coolant light came on in my 1991 buick park I need to drain the old coolant and put a specific kind back in? I heard that using the cheap mix of coolant (pre mixed half water half coolant) may not be good to get..

Posted by on

  • farmbank Sep 13, 2009

    No its not leaking but it was very low when I checked it



2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert whose answer got voted for 500 times.

  • Master
  • 3,113 Answers

Why is it low? Leaking? The dumbest thing they sell is a 50/50 mix of antifreeze. You are getting 50% water and 50% coolant. Just buy a 100% antifreeze jug add it first and top it off with water. If the water is not low you may hve a bad coolant level sensor. It snaps into the radiator tank and is easy to replace when cold.

Posted on Sep 13, 2009

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Buick, GM, uses Dexcool in these vehicles. Dexcool is know for melting your intake gaskets Thus allowing coolant into your intake which will in short ruin your engine. If you don't knwo where your fluid is goint ie a visible leak, I would do as follows...Before you put more fluid in your tank, I would pull a spark plug or two to see if you have fluid going into your cylinders. This is easily seen as a black sludge on the plug electrode. If there is no fluid, I would have the coolant system flushed with plenty of water then add conventional/standard antifreeze. If you dont fully flush your entire coolant system, the conventional Anti freeze will not mix with Dexcool and it will foam causing more problems. Stay away form Dexcool. Standare Antifreeze will nto hurt your engine. There is a class action Lawsuit against GM that has been settled for These Car owners. Google it and you my be eligible for repair & costs reimbursed by GM. Dexcool is a GM manufactured product that is just a 100,000 mile antifreeze. They have known about the problems with
Dexcool for years, however will assume no responsibility for the damage it is causing.
Hope this helps. Dan
A regular guy with the same problem

Posted on Oct 01, 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

a 6ya expert can help you resolve that 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.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

I have a 1999 Buick Regal. I have installed a new thermostat but the low coolant light is still flashing. How can I get it off.

If the reservoir is full of coolant, and the light is on? It is very common for the low coolant sensor to stick. Try tapping on the reservoir, this will (sometimes) free up the float, turning out the light. Sometimes you have to tap pretty hard, don't break it, remember it's made of plastic :) Help this helps, TJ

Aug 08, 2011 | 1991 Buick Regal

1 Answer

I have a 1991 buick park ave my car doesnt over heat but mu coolant lights comes and i guess on the left side of the engine it has a container like for wenshield water but its not do i poor coolant in that...

If the coolant light comes on & your
coolant bottle is empty,your loosing
coolant somewhere

Most likely an intake gasket or head gasket

Your statement --- it doesn't over heat
Then why is the coolant light on ??

Fill the container and have it checked
at a repair shop

Apr 02, 2011 | 1991 Buick Park Avenue

1 Answer

How to reset low coolant light 1991 buick regal custom after replacing radiator & coolant

look in the filler bottle and their is a switch which has a float on the end ,its stuck thats all their is no fancy computer electrics on this vehicle

Mar 05, 2011 | 1991 Buick Regal

1 Answer

My 1997 buick century limited temp. guage kept going up. I added water and it stopped but now when im on the highway the low coolant light comes on. It goes off when i get off the highway. is that my...

I think your buick has a pressure coolant system so you may have air in the system and need too bleed it and for the light coming on while on the highway most likely low coolant when your driving the higher rpm the more coolant is drawn into the motor and triggering the light from coolant reservoir running low on coolant

Nov 10, 2009 | 1997 Buick Century

5 Answers

Low collant light is on and has no leak and is full

This problem is common, if the coolant level is OK, check the "coolant sensor" and clean the plug.

Aug 28, 2009 | 1995 Buick Park Avenue

2 Answers

Cooling Fan Relay

The relay console center is located behind the glove box.

Jul 04, 2009 | 1991 Buick Park Avenue

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

Not finding what you are looking for?
1991 Buick Park Avenue Logo

456 people viewed this question

Ask a Question

Usually answered in minutes!

Top Buick Experts


Level 3 Expert

76673 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8531 Answers

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

Answer questions

Manuals & User Guides