Suby Driver Posted October 25, 2019 Share Posted October 25, 2019 First cold day of the season. Can’t get the heater to produce heat. Fan blows cold air only. Link to comment Share on other sites More sharing options...
Max Capacity Posted October 25, 2019 Share Posted October 25, 2019 Could be the Blend Door in the system, I've seen post about it here. Do a google search. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
Keyan Posted October 25, 2019 Share Posted October 25, 2019 check first to see if your coolant is properly topped off, and that after a short drive both the upper and lower rad hoses are warm or hot to the touch Link to comment Share on other sites More sharing options...
ScottFW Posted October 25, 2019 Share Posted October 25, 2019 Coolant fill level good? Coolant temp gauge on the dash coming up to normal temp? With the dual automatic climate controls, can you get warmer air out of one side than the other once the engine is up to operating temp? If so, you may have a dead blend door actuator. See this thread. Link to comment Share on other sites More sharing options...
ashwinearl Posted October 26, 2019 Share Posted October 26, 2019 refers to it as a Vent Mode Actuator Link to comment Share on other sites More sharing options...
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