Dj_Seph

Yep. A freeze plug. How'd that just suddenly go? D:

stangdanger

running water in the coolant system is a common cause it causes rust in the system and the next thing you know you are replacing freeze plugs or in my case breaking of water pump bolts

mattkoly

The way i understand how the pressure sensor works is it is more of an on off vs actual pressure. Best thing to do to verify if u have pressure or not is to install an actual gauge. My press gauge was doing the exact same thing and it was the sensor. I bet u got a defective sensor and it went bad already.

Dj_Seph

I've changed the sensor twice. But then again, when I do change the sensor, it stays right in the middle for a few days before doing the whole dropping under acceleration thing.