I would definately burp the system, leave the car running while you burp it...make sure all the air is out just like everyone else is suggesting.


However, I had the same problem after replacing my H/E pump AND burping the system completely. The problem I actually ran into was the ambient air temperature sensor had gone bad...

Burp the system, if it doesn't fix it, post back up and I'll let you know where you can find it...

Well I can just let you know now, driver side lower louvre. Remove the louvre and the sensor is right there. Unplug it, if it is working properly you should now read (on your dashboard temp display) +1xx degrees... if it is faulty it will read - degrees. If it shows positive plug the sensor back in, it is working fine. If it is negative you will need to take a wire and short across the plug receptor, your sensor is bad. Shorting across it will suffice until you can acquire a new sensor.


BUT BURP THE SYSTEM BEFORE YOU DO ANY OF THAT.