I'm trying to drain the coolant to change temperature sensor, sender and thermostat. I have unscrewed the petcock almost an inch and only getting drops of coolant. It won't unscrew anymore. Any suggestions?
Look at where they are on a 4.6, they’re at the highest point in the cooling system, just higher than the full/cold mark on the reservoir. There will be some coolant in the upper hose but as long as you tilt it up very little if any coolant will spill out, and none will erupt out from the crossover. I’ve done both before
Always a good time to flush out the coolant, especially when its clogging the drain. Sometimes you need to remove the plug completely to get it to drain. ( and open up a vent, like the coolant overflow cap .. it may not drain without a vent )
I got everything changed. Just started a siphon off the reservoir until the level got below my thermostat/sensor. All went well then. No more variable heat readings or overheating. Now I'm on to the chirping belt/tensioner.
Those are both the same pulley; you don't have to buy the whole tensioner.
I was surprised they sold it that way, personally.
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Related Threads
?
?
?
?
?
TCCoA Forums
1.5M posts
26.8K members
Since 2002
A forum community dedicated to Ford Thunderbird, Mercury Cougar and Lincoln Mark owners and enthusiasts. Come join the discussion about performance, modifications, troubleshooting, maintenance, and more!