Recent content by bong

Catalyst monitor and evap not ready even after driving many miles. The reason is that thermostat staying open thus coolant not reaching the 176 degrees temperature which is one of preconditions sets by programmers to start the monitor. Solution: change the thermostat. :happy:

Catalyst monitor not ready finally FIX. Had the same problem with Tacoma. Ask my mechanic friend and suggested changing Thermostat. Bingo! Set last two remaining monitors: Catalyst and Evap> Apparently, thermostat is staying open and thus coolant not reaching 176 degrees which is the...