I replaced the cap last week but today the temps got up pretty high, just about 230F and I could smell the coolant. I'm thinking that maybe my fans aren't coming on. The previous owner did an F-body radiator swap and installed dual fans. Are there any other possible causes for this? I'm thinking maybe bad thermostat? I'll be doing my coolant flush this week and filling it up with Toyota red coolant, distilled water and some water wetter.