Coolant light flickering

**Agentlongwood** · 01-24-2011

So My low coolant light was on for forever and I finally got around to replacing the sensor. I put a brand new sensor in, I topped off the coolant in the radiator and everything was fine for about 5 minutes. I drove around and the low coolant light would come on every once in a while. Usually under braking or going over bumps. I popped the cap off the radiator and it was full but the light came on for a bit even while I was looking right at the full radiator. Is there something Im missing here?

**FordMan77** · 01-25-2011

Did you bleed the cooling system after installing the new sensor? Might have some air trapped in the system tripping the light occasionally.

**Agentlongwood** · 01-25-2011

Im not really too sure about the coolant fill procedure and if what I did counts as bleeding it. What I did was I ran it for a few minutes till it was warm and opened the little valve on top of the thermostat housing till a small stream of coolant was coming out. There werent any bubbles it was a continuous stream and the coolant was to the brim of the radiator. (The cap was off so I could see it. I tried it with the heater on and off. Kept the coolant topped off in the radiator while the little valve had a stream running out. Anything else I need to do?

**torq455** · 01-25-2011

Is there a good connection? Did the terminal click into place? Check the wiring to see if it's good.

**FordMan77** · 01-26-2011

Nope. Sounds like you got it bled out just fine! Might just be electrical. Maybe check the harness and see if its rubbed through anywhere grounding out?