Low Coolant Light
Thread Starter
Drifting
Joined: Nov 2018
Posts: 1,793
Likes: 579
From: Mays Landing, NJ
Low Coolant Light
So yesterday I replaced the CTS on my 91. Now I'm getting the Low Coolant light coming on at random times. Some coolant of course was lost when i pulled the CTS and the short hose above it for better access. Once job was completed I did add additional coolant to replace the lost coolant. Coolant system is doing its job, engine temps under all driving conditions are normal.
The last time i replaced the CTS this issue never happened. Would this indicate there just might be a bit of air in system?
The last time i replaced the CTS this issue never happened. Would this indicate there just might be a bit of air in system?
Drifting
Joined: Apr 2014
Posts: 1,699
Likes: 231
From: Hawthorne CA
So yesterday I replaced the CTS on my 91. Now I'm getting the Low Coolant light coming on at random times. Some coolant of course was lost when i pulled the CTS and the short hose above it for better access. Once job was completed I did add additional coolant to replace the lost coolant. Coolant system is doing its job, engine temps under all driving conditions are normal.
The last time i replaced the CTS this issue never happened. Would this indicate there just might be a bit of air in system?
The last time i replaced the CTS this issue never happened. Would this indicate there just might be a bit of air in system?
Drifting
Joined: Apr 2014
Posts: 1,699
Likes: 231
From: Hawthorne CA
Could be.. ijs testing the switch could give you some info. Does it display low coolant when you first turn it on or when it gets hot? Radiator cap can cause this issue too.
Thread Starter
Drifting
Joined: Nov 2018
Posts: 1,793
Likes: 579
From: Mays Landing, NJ
It comes on when cold and hot and so far have seen to pattern on when it comes on or goes back off. Again, the cooling system is working as it should so starting to think more to a screwed up sensor.
Burning Brakes
Joined: Mar 2010
Posts: 1,094
Likes: 68
From: Providence RI
Is the surge tank full? Where did you add the coolant to...surge tank (near windshield) or the overflow tank (passenger side headlight).
the sensor is located on the bottom of the surge tank. If the light wasn’t on before, make sure you have enough coolant. Just cause it’s running okay doesn’t mean it’ll have enough if the car gets hot and pushes some to the overflow.
the sensor is located on the bottom of the surge tank. If the light wasn’t on before, make sure you have enough coolant. Just cause it’s running okay doesn’t mean it’ll have enough if the car gets hot and pushes some to the overflow.
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