Quote Originally Posted by FordMan77 View Post
Gotcha, no problem. I feel the same way when I get asked to work on a diesel, lol.. Let's concentrate on the MAF issue first. I'd leave the O2 sensor alone for now. If it's an issue we can figure that out later. One step at a time.

FYI, that temp reading sounds normal for a 3800. These engines run warm normally. Could be some air in the system after the rad. change if the system wasn't bleed correctly which may account for the fluctuating guage.

If you look at the thermostat neck there is a small bleed screw on top of it. Get the car to full temp and loosen the screw up. Should only take a few turns to open it up, no need to remove it completely. Once you get a steady stream of coolant from it then it should be good. I usually shove a rag around the area so it doesn't pool up in the depressions of the lower intake. It may take several times of opening this to get the air out so be patient. I usually help it along by manually pulling the throttle up a bit to around 1500 to get the coolant moving for a minute or so and then let it idle and crack the screw open again.
Bad news.. I no longer have to worry bout this car anymore.. got rear ended while waiting to make a left turn at an intersection.. the person who hit me fled the scene before I could even park and get out so didn't catch anything off it.. the passenger side is pushed forward. Support frame is broke, rear struts pushed through the trunk, trunk lid won't shut, are are angled and crooked. Just totaled my car..

I appreciate the advice and everything