[Yellow68SS]

I just noticed somthing on my way home tonight. I drove by a friends house and on the way there the car was running right at 180-185. Good no problems. I hang out a t his house for about 20 minutes and go home I start driving and as i leave the temp is right under 180 and i start driving and the temp goes down to about 165. It may have been a few degrees cooler but not 15 degrees cooler. I also didn't notice the cooling system is just not working like it did about 2 months ago until tonight. it was about 50-60 degrees in the day about 2 months ago on a good day. And then i was having problems keeping water in the radiator, bad cap and no recovery system which i have fixed these problems. I would run in traffic no problem at 180 or lower even when i lost a lot of fluid because of belt throwing. Now radiator stays full and at night it runs at 180 most of the time, or a little more when the temp is about the same 50-60. What could have made this change? I have underdrive pulleys but it did this with the stock pulleys as well.

Thanks

[chicane67]

And what thermostat are you running?

[Yellow68SS]

I am running a highflow 160. i tried even running no thermostat which just prolonged the thing heating up and did nothing for the final temp it ran so i put it back in.

[chicane67]

Are you running a mix or just plain water?

[Yellow68SS]

I am running about 30% antifreeze and 70% water.

[Yellow68SS]

I just checked my water flow. Well i took of the radiator cap and watched the water flowing out of the tubes and it is just little streams coming out of the cores not even half as wide as the cores themselves and when i rev it, it hardley gets any better which rules out the underdrive pulleys. I think that i read somewhere that it should be streaming out about an inch out of the cores or so at idle. If this is true than my pump must be shot.

Any opinions?