I placed a pressure tester just shy of 16 psi and let it set for about 30 minutes. The needle just barely dropped abot 1/16 or less of 1 psi. I used the block tester that utilizes the blue fluid and vacuum for about 3-4 min. And the fluid remained blue.
I'm not really sure how to check for water pump flow. I don't see any movement in the plastic bottle but, the coolant rises and falls as the car warms up.
I used a scan tool while the car was idling and the temp stayed around 200 degrees after sitting at idle with the cap off for about an hour. The outside temp here is about 90 degrees.
I put the cap on and had my wife take me for a ride with the scan tool attached and the AC on. It took about three blocks of city driving for the temp to start climbing past where it had been. When we stopped and opened the hood, coolant was again pouring out under the cap. The scan tool read only 230 at that point. The anti-freeze bottle stated that the boilover point should be 265 degrees. I did notice that the plastic bottle wasn't pulsating like a full boilover while the coolant poured out.
I'm really confused with this problem.
Saturday, June 19th, 2010 AT 3:22 PM