ok i have had a ongoing promblem with cooling promblems and i have already changed my WP and temp sensor and flushed sysytem with hose and use some raditor flush solution . and still getting Dark brown and light brown sewer looking water from the raditor ,It also smells real bad. what is causing ths? has this happened to ne one else ? it seams the bad drity dark brown water is comming from the heater hoses ? is it the heater core ?

 

yes. Our heater cores are known for really nasty brown coolant. I'd suggest flushing the heater core seperate from the rest of the system very well.

 

whats the best way to do this ? will this fix my problem is the hater core gone bad ?

 

I'd recommend flushing it very well.. I wouldnt change it unless it was leaking, it is a PITA. just keep pushing water through it until it comes out clear.