May 13, 2016, 03:01 PM
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Low Coolant Light Keeps coming on.
Low Coolant Light Keeps coming on. He car is a 98 Formula. The light glows after 10 minutes of driving. The overflow coolant is full. Anyone have this problem? Is there a sensor somewhere that may have malfunctioned? Thanks.
Is there coolant in your radiator?
You may need to top if off and check level again to see if its low due to a leak.
PS: is there really a low coolant light on all fbodies or is it just a pontiac thing?
I'm chasing leaking coolant issues myself n would like to know where to look for this light in cluster?
You may need to top if off and check level again to see if its low due to a leak.
PS: is there really a low coolant light on all fbodies or is it just a pontiac thing?
I'm chasing leaking coolant issues myself n would like to know where to look for this light in cluster?
Is there coolant in your radiator?
You may need to top if off and check level again to see if its low due to a leak.
PS: is there really a low coolant light on all fbodies or is it just a pontiac thing?
I'm chasing leaking coolant issues myself n would like to know where to look for this light in cluster?
You may need to top if off and check level again to see if its low due to a leak.
PS: is there really a low coolant light on all fbodies or is it just a pontiac thing?
I'm chasing leaking coolant issues myself n would like to know where to look for this light in cluster?
The low coolant sensor gets dirty and causes a false reading. It's on the passenger side close to the battery. Easy fix if you don't want to drain any coolant just unplug it and the light will go off
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bigj2717 & bad_408_vert
Thank you, this was the type of answer I was looking for. I wanted to make sure there was a sensor before I started unplugging stuff. Now that I know where it is located, I can check and clean hopefully it just needs to be cleaned.
Thank you, this was the type of answer I was looking for. I wanted to make sure there was a sensor before I started unplugging stuff. Now that I know where it is located, I can check and clean hopefully it just needs to be cleaned.
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Verdad Gallardo So, I woke up this morning thinking i better get to work on the car before the sweltering heat comes rolling through. (I live in Texas) Pop the hood found the connector that goes to the sensor and commenced to spraying it out with QD Electric cleaner. Both sides of the connector. The male end was easy as when I disconnected it, it freely moves around. The female part of the plug was not hard, but I had to put my car up on the rhino ramps to get a good angle ( I guess its the con of having your car lowered) Anyways, I got that sprayed nice and good. Went to plug in the connector and off I went. I knew if the light was gonna turn on, it would do it within a couple of minutes of driving down the road. I kept waiting and waiting and it didnt come on, I was thinking "It couldnt be that easy, could it?" After coming back out of the store, turned on the vehicle and came back home. No light, no problems. The moral of this story is QD ELECTRIC CLEANER KICKS ***!! Along with those persons who replied to my problem. Thanks! 
Many times the problem is the sensor itself. I fixed mine last week. Took it out of the radiator, plugged it, took sandpaper to the inside untill all crud was out. Washed it with soapy water and plugged it back in. Viola no more problems.
Ditto, almost like a once a season thing, they get all crud-ed up...or just unplug it and forget it.
So, I woke up this morning thinking i better get to work on the car before the sweltering heat comes rolling through. (I live in Texas) Pop the hood found the connector that goes to the sensor and commenced to spraying it out with QD Electric cleaner. Both sides of the connector. The male end was easy as when I disconnected it, it freely moves around. The female part of the plug was not hard, but I had to put my car up on the rhino ramps to get a good angle ( I guess its the con of having your car lowered) Anyways, I got that sprayed nice and good. Went to plug in the connector and off I went. I knew if the light was gonna turn on, it would do it within a couple of minutes of driving down the road. I kept waiting and waiting and it didnt come on, I was thinking "It couldnt be that easy, could it?" After coming back out of the store, turned on the vehicle and came back home. No light, no problems. The moral of this story is QD ELECTRIC CLEANER KICKS ***!! Along with those persons who replied to my problem. Thanks!
It will gush out. There is a little wire clip holding it in. Hard to explain but it won't come out with out removing the clip first. I had a rubber cone that happened to fit perfect so I didn't loose coolant. It's maybe a one inch hole in the radiator. If you loose some just buy some coolant you won't loose much.
I had a feeling you didn't fix it, but wanted to wait it out. The sensor is a funny little guy and will work fine untill it gets pretty hot.
And no the later f-bodies do not have the sensor. Only the 98 and 99s had it. Maybe the 2000's, but I'm not sure on that year.
I had a feeling you didn't fix it, but wanted to wait it out. The sensor is a funny little guy and will work fine untill it gets pretty hot.
And no the later f-bodies do not have the sensor. Only the 98 and 99s had it. Maybe the 2000's, but I'm not sure on that year.
Scratch that. I think the cleaning only delayed the light coming on. I made another trip today, this time the light came on again. I am guessing I want to remove the sensor and clean it up a bit. Couple of questions. A. How do I do it. B. will there be any leakage because I remove it?
Some people will tell you that you don't need the sensor - which I don't believe to be true. Its there to keep you from introducing air in the system if the level gets too low. It saved me from catastrophe when I had a bad water pump injecting air in to the system. Very glad I replaced it. $20 well spent!
I siphoned coolant from the tank in to two milk jugs. You just need to get the fluid to the level where you can see the sensor inside the radiator. You will see how the clip works on your new part. Just undo the clip, take off the electrical connector, and then the old sensor twists/pulls out. Afterwards, just pour the coolant back in the radiator and tank. If any air is left in there it will self bleed out of the system.
Purists will tell you that you should throw away the old coolant and never re-use it. IMO - its not that big of a deal. I'd rather siphon it out vs. go through the hassle of putting the car up on blocks to drain the radiator. (I live in a place where that's challenging.)
Yea - the bad sensor will behave differently with temperature.
Some people will tell you that you don't need the sensor - which I don't believe to be true. Its there to keep you from introducing air in the system if the level gets too low. It saved me from catastrophe when I had a bad water pump injecting air in to the system. Very glad I replaced it. $20 well spent!
Some people will tell you that you don't need the sensor - which I don't believe to be true. Its there to keep you from introducing air in the system if the level gets too low. It saved me from catastrophe when I had a bad water pump injecting air in to the system. Very glad I replaced it. $20 well spent!
Just unplug the harness from the sensor and be done with it. If you are relying on a sensor to tell you when to check maintenance items than you are asking for a problem. 1/2 the sensors on these cars are worthless anyways.