Car won't warm up unless driving

[SebasCvdB]

I have a 2005 Ford explorer XLT and I'll have the car running and in Idle it won't warm up inside at all (heater) but when I start driving it will warm up.. No codes, no nothing.

 

[corkey]

sounds like a bad thermostat to me,, change it out and it should work the way it is supposed to,

 

[donnanell]

same issue

I have just replaced thermostat and intake gasket and rad cap and having same issue. when driving it warms up, let to idle it stays cool and blows cool are???? please any thoughts
Thanks

 

[willzilla]

I have just replaced thermostat and intake gasket and rad cap and having same issue. when driving it warms up, let to idle it stays cool and blows cool are???? please any thoughts
Thanks

Perhaps the coolant temp sensor?