The deal at advance is 15% off $100+, and then you get $50 off your next $100 purchase!

 

In 1998 & up, the heater temperature control is driven with a little motor. So if you twist the **** all the way to hot, the actual valve in the water hose doesn't move until you switch the key to ON (don't need to actually start the engine).
You need that valve open so antifreeze gets into the heater core when you fill. Otherwise you'll probably have large air pockets in the cooling system.

 

Thanks for the tip. I hadn't realized that!

 

Another follow up, it seems as though the car is not doing the crazy idle anymore. It did it yesterday morning, and then it didn't do it for the evening commute (2 miles) and didn't do it for the morning commute today. We replaced the O2 A/F ratio sensor last night and cleared the CEL for P1167, so we'll see if that comes back.

 

Thanks for the update and please do keep us posted.

 

Still is functioning normally. It's officially fixed!

 

Cool, glad to hear.....too many times the answer/solution is never known. Thanks for letting everyone know.

 

Well, it was all in vain. Her car was totaled a couple hours ago in North Carolina in a big pileup (she is doing fine)! All of that for nothin'! I hope it can benefit someone here, though!

 

Haha, and at least I will get my $50 off coupon at Advance!

 

Hate to hear about the car, but as you said she is fine so that is the most important thing.

What part of NC?