I have been haveing problems with the low coolant light and buzzer so I check the levels before even starting and it both places are full. I start the car and light and buzzer are on! I believe the sensor is below the filler by the air pump... Right? Has anyone had to replace that sensor? I can't think of any other causes for the light and buzzer going off.

 

unfortunately that is usually a sign that the coolant seals are going on the engine. i would have the coolent tested to see if there is exhaust contamination....... i hope its not the coolant seals

 

Is the sensor by the filler near the air pump? If so then fluid would be low when I check before starting. It is full before starting that is where I am haveing questions.

 

the reservoir has nothing to do with the coolant sensor unless yours has a crack. do you have any obvious leaks ? when you start your car do you get a haze of white smoke ? my FD had bad coolant seals. you have to rebuild the engine when this happens. i did the same thing you did....

 

I didn't say anything about the reservoir tank. If there is ever any smoke at start up it is blueish which would be oil. I was told from another forum that one person had the same problem but the wire got disconnected for the sensor so I am gonna try that tomorrow.

 

Those sensors like to act up alot.

 

My sensor is poopy and I've replaced it once before. The One I got now is still a poopy used one I grabbed from PFS. If It is loose and it's mounting point then it obviously leaks. But you shouldn't have any problems distinguishing a bad sensor and a bad o ring seal. The sensor is on the front of the filler neck .It will be very obvious if it is not sealing properly.

-BOOST

 

Then the senor is bad or the wire is bad because no coolant is being lost.

 

Um the wire would have to be broke to be bad. I would say that If you are not seeing any coolant loss in that area . Most likely the sensor is fine and you may have a bad O ring in your rotor housing . Time for a new motor..

 

Ok read the first part of this thread I check the coolant levels before start up and it's full, the sensor is in coolant! I also have to coolant in the oil and I have never got a white cloud of smoke on start up. My car is driven 2-3 times a week so there is plenty of time for coolant to get into the engine if it was, but again all coolant areas are full.