Buick When starting new posts, please specify YEAR, MAKE, MODEL, ENGINE type, and whatever modifications you have made.

1994 Buick Regal Low Coolant Light is on

Thread Tools
 
Search this Thread
 
Old Jan 26, 2025 | 03:59 PM
  #1  
trainisleaving's Avatar
Thread Starter
Junior Member
 
Joined: Jan 2025
Posts: 3
Likes: 2
trainisleaving is on a distinguished road
Smile 1994 Buick Regal Low Coolant Light is on

Hey everyone, just a disclaimer this is my first car and its the first time working on a car by myself so pls excuse any stupid questions (my knowledge is still basic)

Car is a '94 Regal with the 3800 v6. The low coolant light sometimes comes on, my coolant level is fine, and its not overheating there are no leaks from the coolant system. What do i need to do to fix this problem?

I looked in the coolant recovery tank and the coolant looks brown-ish? I read another post on here and someone ended up fixing the problem by cleaning the recovery tank and refilling it.

My question is, can i just pump out the brown looking coolant from the recovery tank, then replace it with new coolant? Or do i have to flush the whole system? Thank you in advance for your help....
Theo
Reply
Old Jan 26, 2025 | 06:40 PM
  #2  
carfixer007's Avatar
Senior Member


True Car Nut
 
Joined: Dec 2018
Posts: 3,239
Likes: 1,597
From: Flint, MI USA
carfixer007 is on a distinguished road
Default

That color is the tank and not the fluid. The sensor is in the top of the rad.

Operation CHARM: Car repair manuals for everyone.
Home >> Buick >> 1994 >> Regal V6-231 3.8L VIN L SFI >> Repair and Diagnosis >> Sensors and Switches >> Sensors and Switches - Cooling System >> Coolant Level Sensor >> Locations

Coolant Level Sensor: Locations

RH Front Of Engine Compartment:




pro multis · About Operation CHARM
Reply
Old Jan 26, 2025 | 11:47 PM
  #3  
CathedralCub's Avatar
Senior Member


True Car Nut
 
Joined: Feb 2015
Posts: 6,809
Likes: 1,006
From: Earth
CathedralCub is a splendid one to beholdCathedralCub is a splendid one to beholdCathedralCub is a splendid one to beholdCathedralCub is a splendid one to beholdCathedralCub is a splendid one to beholdCathedralCub is a splendid one to beholdCathedralCub is a splendid one to behold
Default

It is probably a bad coolant level sensor, or maybe a problem with wiring going towards that sensor. It is in the location indicated in carfixer007'* post above ^^^^^^^

First, from that you have described, this is a sensor issue, not a coolant issue.

I would start by checking the sensor and wiring that runs to it, and see if there'* anything obvious going on such as damaged wires, unplugged connector, residue from a leak, etc.

Welcome aboard!
Reply
Old Jan 27, 2025 | 06:20 AM
  #4  
trainisleaving's Avatar
Thread Starter
Junior Member
 
Joined: Jan 2025
Posts: 3
Likes: 2
trainisleaving is on a distinguished road
Default

Originally Posted by carfixer007
That color is the tank and not the fluid. The sensor is in the top of the rad.

Operation CHARM: Car repair manuals for everyone.
Home >> Buick >> 1994 >> Regal V6-231 3.8L VIN L SFI >> Repair and Diagnosis >> Sensors and Switches >> Sensors and Switches - Cooling System >> Coolant Level Sensor >> Locations

Coolant Level Sensor: Locations

RH Front Of Engine Compartment:




pro multis · About Operation CHARM
thank you for the reply and for linking the diagram. I'll check the sensor out for any faults
Reply
Old Jan 27, 2025 | 06:21 AM
  #5  
trainisleaving's Avatar
Thread Starter
Junior Member
 
Joined: Jan 2025
Posts: 3
Likes: 2
trainisleaving is on a distinguished road
Default

Originally Posted by CathedralCub
It is probably a bad coolant level sensor, or maybe a problem with wiring going towards that sensor. It is in the location indicated in carfixer007'* post above ^^^^^^^

First, from that you have described, this is a sensor issue, not a coolant issue.

I would start by checking the sensor and wiring that runs to it, and see if there'* anything obvious going on such as damaged wires, unplugged connector, residue from a leak, etc.

Welcome aboard!
Thanks for welcoming me! I'll make sure to check out the sensor and the wiring to it, hopefully i can find what the issue is...
Reply
Old Jan 27, 2025 | 11:03 PM
  #6  
CathedralCub's Avatar
Senior Member


True Car Nut
 
Joined: Feb 2015
Posts: 6,809
Likes: 1,006
From: Earth
CathedralCub is a splendid one to beholdCathedralCub is a splendid one to beholdCathedralCub is a splendid one to beholdCathedralCub is a splendid one to beholdCathedralCub is a splendid one to beholdCathedralCub is a splendid one to beholdCathedralCub is a splendid one to behold
Default

Let us know how it goes!
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
GunsOfNavarone
General GM Chat
1
Feb 13, 2016 10:13 PM
buick01
Buick
12
Jul 29, 2011 10:52 PM
captainmiller
1992-1999
7
Jan 17, 2007 11:09 AM
dimprov
1992-1999
6
Oct 24, 2005 10:57 AM
sseboy
1992-1999
12
Dec 26, 2004 05:19 PM




All times are GMT -4. The time now is 12:07 PM.