Coolant light?

Thunderscrash · January 13th, 2012, 07:42 PM

My coolant light has come on a few times over the past 2 weeks. It doesnt come on everytime I start the car just kind of randomly. My coolant is not low, that was my first guess haha. Would this be the thermostat sticking? Any ideas? Car runs fine doesnt get over heated or anything.

86er · January 13th, 2012, 08:02 PM

the coolant level sensor is a float style sensor. Sometimes they get hung up.

WickedSnake00 · January 13th, 2012, 08:02 PM

Coolant is based on the sensor which I believe is in your coolant reservoir. How does the level look in there?

It could be a bad sensor, or you could have an air pocket. Has it been filled recently?

Thunderscrash · January 13th, 2012, 08:26 PM

I've owned the car for a year and a few months and never messed with the coolant. The level is fine. I just checked it the other day. Is there a reason why this would just start happening after a year? It never happened before as long as I've owned the car.

86er · January 13th, 2012, 08:38 PM

Originally Posted by Thunderscrash

I've owned the car for a year and a few months and never messed with the coolant. The level is fine. I just checked it the other day. Is there a reason why this would just start happening after a year? It never happened before as long as I've owned the car.

Originally Posted by 86er

the coolant level sensor is a float style sensor. Sometimes they get hung up.

..............

Thunderscrash · January 13th, 2012, 08:41 PM

Thats where I am confused though. It has never come on before and now with in the last 2 weeks it has come on like 5 times randomly.

Eagle2000GT · January 13th, 2012, 09:04 PM

I have had mine come on a couple of times do to low coolant and then stick. I'd fill the tank and it would still be on. For some reason the float gets stuck. As you are looking at the engine from the front of the car the float is on the drivers side underneath the cap. The two times mine has stuck on I took a rod and gently wiggled it around the float. It freed the float and everything was normal. I tried that first because according to my maintenance manual replacing that float is a real pain.

By the way, I have absolutely no idea why the float stuck but its been a year and its not happened again.

SSG Pate · January 13th, 2012, 09:32 PM

You need to do a test on your coolant and see what mixture you have, color etc. those floats are very sensitive. take the 2 screws off it and dump out your fluid in your resorvoir so you can inspect the rod and float. Specific gravity of the coolant can effect the Float, some will disagree, but it does.

Thunderscrash · January 13th, 2012, 10:53 PM

Ok I'll check the coolant. If I turn the car on and the light comes on, I can shut the car off and restart it and the light will go off and not come on for a day or so. It's just completely random. I will check the coolant like I said though, the level is fine. Maybe I'll just drain the coolant and put new in since I havent done so since owning the car. Is there a write up on how to change the coolant? I assume its pretty easy, but I dont know as I have never done it.

prochargedGT · January 14th, 2012, 12:21 PM

i just unplugged mine haha it was too annoying and always came on when it was full. i tried playing with the floater but it would always just sink so i just unplugged it haha

Cabikejumper · January 14th, 2012, 01:18 PM

Mine is always on. So I just unplugged the sensor and check the level everyday.

Thunderscrash · January 14th, 2012, 04:43 PM

Been doing a little research. From what I gather, to change the coolant and flush the system, I need to drain the old coolant, and place a hose with running water into the radiater filler, then start the car and let it warm up with water running through the system from a hose. After the car is warm, I need to fill back up with a 50/50 mixture of antifreeze and water. Sound right?

aarongt2000 · January 14th, 2012, 06:05 PM

Originally Posted by prochargedGT

i just unplugged mine haha it was too annoying and always came on when it was full. i tried playing with the floater but it would always just sink so i just unplugged it haha

+1 most people on this site are under the hood a lot. checking/changing oil. cleaning. spark plugs. bollt ons. ect. just check on it

January 13th, 2012, 07:42 PM	#1
Thunderscrash Regular 2000 GT N/A Join Date: Oct 2010 Location: Delaware? Posts: 478 iTrader: 0 reviews	Coolant light? My coolant light has come on a few times over the past 2 weeks. It doesnt come on everytime I start the car just kind of randomly. My coolant is not low, that was my first guess haha. Would this be the thermostat sticking? Any ideas? Car runs fine doesnt get over heated or anything.

January 13th, 2012, 08:02 PM	#2
86er I Post Entirely Way Too Much Join Date: Nov 2006 Location: Memphis, TN Posts: 7,627 iTrader: 0 reviews	the coolant level sensor is a float style sensor. Sometimes they get hung up. __________________ Just a truck 5.4 3v: 264hp 317ft lbs rock stock The "search" button, its not just for porn piecing together the next project faster than your first sexual experience

January 13th, 2012, 08:02 PM	#3
WickedSnake00 MM's king of Neon's 404 - car not found 17.81@87 Join Date: Aug 2010 Location: Diesel Engine Capital of the World, Columbus, IN Posts: 7,374 iTrader: 0 reviews	Coolant is based on the sensor which I believe is in your coolant reservoir. How does the level look in there? It could be a bad sensor, or you could have an air pocket. Has it been filled recently? __________________ Official Secondhand Snake Build Thread Here Looks Like a Cobra, Sounds Like a Cobra, Tastes Like a Cobra, Not a Cobra. For Sale: P71 Interceptor motor

January 13th, 2012, 09:04 PM	#7
Eagle2000GT I Post Entirely Way Too Much 2000 Mustang GT 12.73@111.36 Join Date: Aug 2007 Location: Shelbyville, IN Posts: 5,311 iTrader: 1 reviews	I have had mine come on a couple of times do to low coolant and then stick. I'd fill the tank and it would still be on. For some reason the float gets stuck. As you are looking at the engine from the front of the car the float is on the drivers side underneath the cap. The two times mine has stuck on I took a rod and gently wiggled it around the float. It freed the float and everything was normal. I tried that first because according to my maintenance manual replacing that float is a real pain. By the way, I have absolutely no idea why the float stuck but its been a year and its not happened again. __________________ ProCharger P-1SC, 9 psi, STD 396/383; Uncorrected 388/375; SAE 383/370 Mods list in Garage.

January 13th, 2012, 09:32 PM	#8
SSG Pate Premium Member 00 Mustang GT Vert/88 5.0 Join Date: Sep 2010 Location: Tennessee Posts: 1,766 iTrader: 3 reviews	You need to do a test on your coolant and see what mixture you have, color etc. those floats are very sensitive. take the 2 screws off it and dump out your fluid in your resorvoir so you can inspect the rod and float. Specific gravity of the coolant can effect the Float, some will disagree, but it does. __________________ Proud Iraq and Afghanistan War veteran Powered By MMR 4.75L Stroker, Tuned at Kurgan Motorsports

January 13th, 2012, 08:26 PM	#4
Thunderscrash Regular 2000 GT N/A Join Date: Oct 2010 Location: Delaware? Posts: 478 iTrader: 0 reviews	I've owned the car for a year and a few months and never messed with the coolant. The level is fine. I just checked it the other day. Is there a reason why this would just start happening after a year? It never happened before as long as I've owned the car.

January 13th, 2012, 08:41 PM	#6
Thunderscrash Regular 2000 GT N/A Join Date: Oct 2010 Location: Delaware? Posts: 478 iTrader: 0 reviews	Thats where I am confused though. It has never come on before and now with in the last 2 weeks it has come on like 5 times randomly.

January 13th, 2012, 10:53 PM	#9
Thunderscrash Regular 2000 GT N/A Join Date: Oct 2010 Location: Delaware? Posts: 478 iTrader: 0 reviews	Ok I'll check the coolant. If I turn the car on and the light comes on, I can shut the car off and restart it and the light will go off and not come on for a day or so. It's just completely random. I will check the coolant like I said though, the level is fine. Maybe I'll just drain the coolant and put new in since I havent done so since owning the car. Is there a write up on how to change the coolant? I assume its pretty easy, but I dont know as I have never done it.

January 14th, 2012, 12:21 PM	#10
prochargedGT Regular 2000 Mustang GT Join Date: Mar 2011 Location: West Valley City, UT Posts: 183 iTrader: 1 reviews	i just unplugged mine haha it was too annoying and always came on when it was full. i tried playing with the floater but it would always just sink so i just unplugged it haha __________________ 2000 Black GT: Procharged D1SC Setup Coming Soon!! P1SC Setup @ 10psi ,424Hp & 388Tq 2000 Performance Red GT: Bone stock, Totaled 1994 Plymouth Sundance, DD

January 14th, 2012, 04:43 PM	#12
Thunderscrash Regular 2000 GT N/A Join Date: Oct 2010 Location: Delaware? Posts: 478 iTrader: 0 reviews	Been doing a little research. From what I gather, to change the coolant and flush the system, I need to drain the old coolant, and place a hose with running water into the radiater filler, then start the car and let it warm up with water running through the system from a hose. After the car is warm, I need to fill back up with a 50/50 mixture of antifreeze and water. Sound right?

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