I bought a 2009 4.8 with a recent bimmerfix for the weep hole issue. The guy I bought it from had put stop leak in and said he fixed everything. So I get the x5 and it the heater doesn’t work. I drained the coolant and flushed, but still no heat. Pulled everything apart, heat control valve was filled with sludge.
New t-stat, new water pump, new heat control valve, new aux water pump. Everything seems to work as it should now, but the lower radiator hose isn’t getting hot. Temp never goes above 220F. Fans kick on at about 217f.
Is this normal? If not, any advice? Thanks
Side note, the aux water pump doesn’t come on when I do the gas pedal thing to purge the system.