Coolant Light on Dash
#1
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Coolant Light on Dash
Okay, so I keep getting a random coolant light on the dash every now and then. It gets more frequent everyday. I have checked the coolant and everything is fine? Does anyone know where this sensor is? I want to check the sensor before I go all the way to the dealer. Thanks.
#4
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The sensor is on the bottom of the overflow bottle.
Mine started freaking out a couple of thousand miles ago. For a while, over-filling the reservoir would cause the light to go out, but now it is on most of the time.
I am running a bigger radiator (that should make no difference to the level sensor) and a higher pressure cap (same), but the intermittent light started before I added either. It started on motor #1 and is the same on motor #3.
It definitely isn't a level issue or air in the system - the light comes on while the car is just sitting there with a normal amount of coolant in the bottle.
A friend here in town that is a tech at Berge Mazda says he has started to get '8s in with the same problem at similar mileage.
Mine started freaking out a couple of thousand miles ago. For a while, over-filling the reservoir would cause the light to go out, but now it is on most of the time.
I am running a bigger radiator (that should make no difference to the level sensor) and a higher pressure cap (same), but the intermittent light started before I added either. It started on motor #1 and is the same on motor #3.
It definitely isn't a level issue or air in the system - the light comes on while the car is just sitting there with a normal amount of coolant in the bottle.
A friend here in town that is a tech at Berge Mazda says he has started to get '8s in with the same problem at similar mileage.
#5
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Yeah, mine seems to only come on when I am hauling *** (which is most of the time). I freakin' hate dash lights so I hope this is not a issue that cannot be resolved. I wonder if the dealer will give me **** since it probably will not come on when they have it.
#6
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i had the same problem so i took it in to mazda they said it is normal because the engine sucks in so much coolant when you get on it that it trips the sensor as having low coolant.mine would come on for about two minutes then shutoff.thats what i was told sounds pretty legit to me cuz the coolant is not low or anything.
Funny i just started a new thread asking the same question then i took Mugato's advice and here i am.....
Funny i just started a new thread asking the same question then i took Mugato's advice and here i am.....
#7
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i had the same problem so i took it in to mazda they said it is normal because the engine sucks in so much coolant when you get on it that it trips the sensor as having low coolant.mine would come on for about two minutes then shutoff.thats what i was told sounds pretty legit to me cuz the coolant is not low or anything.
Funny i just started a new thread asking the same question then i took Mugato's advice and here i am.....
Funny i just started a new thread asking the same question then i took Mugato's advice and here i am.....
There are two things wrong in that explination.
1) The engine does not "suck in" coolant. It recirculates it. You can't "suck in" more coolant that you are already recirculating in a full system. Depending on driving conditions and temp, the coolant may be deposited and then drawn back into the system in small amounts from the overflow tank but no where near the level that would trip the sensor. Something is wrong with the car. My guess would be the sensor itself.
2) If this were true, then every RX-8 would have that issue. I've owned two, neither had this issue, nor has any other one I've driven when I "got on it".
Last edited by supergoat; 06-23-2007 at 09:10 PM.
#17
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I had this issue once... Really scared me too... It was after some "spirited" driving, while I was waiting at a red light. I got the coolant light for 30 seconds and then it went off.
I'm mostly worried that I didn't put in a good mixture of water/coolant, but I haven't seen the coolant light in weeks, so no worries so far...
I'm mostly worried that I didn't put in a good mixture of water/coolant, but I haven't seen the coolant light in weeks, so no worries so far...
#19
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I'm seeing the same thing - spirited driving of say 7k rpm for over 30 seconds or so equals coolant light, drop the rpm's and the light goes away. A double check of the coolant level shows that is not the cause of the problem.
The temperature gauge shows no increase in engine temp so it does sound like a misread of a sensor as opposed to an actual issue.
The temperature gauge shows no increase in engine temp so it does sound like a misread of a sensor as opposed to an actual issue.
#23
The cost of the coolant overflow bottle is around $400.00 aus so simple disconnecting the sensor solves the problem and ..........costs nada
Thanks MM for the pics but i do preffer your avatars
Ben
Thanks MM for the pics but i do preffer your avatars
Ben
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I also had the light, but it was at cold startup in the morning. Stayed on for about 30 sec. then I haven't seen it again.
Anybody know if there is a TSB being worked on? Sounds like this is an issue. Certainly one that I will get fixed before the warranty runs out!
Anybody know if there is a TSB being worked on? Sounds like this is an issue. Certainly one that I will get fixed before the warranty runs out!