Puking coolant and surging during warmup

[BigRedPowerstroke23]

I have a 03' F-250 6.0. It's puking coolant down to a certain level then not using any more but still have pressure in cooling system. Also surges until it reaches running temp(sometimes dies). Lately just been driving around town and once it warms up no problems. I have been told that i need to invest in the egr block-off and oil cooler. What I want to know is that the right place to start? What should something like that cost? The truck is completely stock other then 4in. exhaust and stage 1 intake. Just trying to figure it out. Thanks

[TommyBoy#1]

pull your egr out its only two bolts take a look at it if its clogged then thats your problem your cooler is leaking but if your wanting to do the block off ide pull it just to check and see if its dirty .......... thats the first place i would start