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Yes it does drop at idle. I have not tried it at the higher rpm but assuming it drops at low rpm it seems it would also do the same at the higher rpm.When you take the water away the pressure will come back up.
it was 300 at idle and dropped to 200 with water on the condensor
I used a fender cover to hang in front of the grill and it sucked it in so I assumed it was flowing ok but i will check it and get back to you. Thank you.
Ok. I removed all the shrouding I could and used pressured water to blow through the radiator and cooler as much as I could. I also went through the fan area and blew through from that direction getting as much coverage as I had access to. I recharged the system. At idle the low is at 38 and the high is at 225. At 2000-2500 the low is at 25 and the high is at 300. The high will start moving up to around 330 anfd then drop back to 300 and at that point the low will go to 20 and then it cycles. I had passenger window and drivers door open and the blower on high during the test. What do you think ?
with blower on high it is 39 out of the center vent