Why does heat start blowing only at higher RPMs?
Heat starts blowing only at higher rpm’s, I have changed coolant, thermostat, coolant reservoir and cap as well as flushed heater core which had no rust in it. The car does not overheat at all. I did notice however that after cooling down I still have pressure in the coolant reservoir when opening the cap (it should not happen on the cold engine).
What kind of car does not blow heat at idle?
Hi, I have the vehicle listed above it is the SEL model. It has 3.0 V^ Duratec engine. My problem is that car does not blow any heat at idle. Heat starts blowing only at higher rpm’s, I have changed coolant, thermostat, coolant reservoir and cap as well as flushed heater core which had no rust in it.
Why does the heater only work when the engine is revved?
This sounds like a typical problem these vans had which is they get air trapped in the heater core which makes it difficult for coolant to enter the heater, This is why it only works when the engine is revved. I would make sure the coolant is full then start the engine and turn the heater on full blast.
How does a no heater at idle work?
The only hose coming of heater core outlet goes to the throttle body cooling line (this throttle body needs to be cooled with coolant). Both hoses coming into the firewall were cold until you rev and hold 2000 rpm. Then they become warm to the touch and then after thirty seconds back to normal room temperature. So my solution so far. 🙂
Heat starts blowing only at higher rpm’s, I have changed coolant, thermostat, coolant reservoir and cap as well as flushed heater core which had no rust in it. The car does not overheat at all. I did notice however that after cooling down I still have pressure in the coolant reservoir when opening the cap (it should not happen on the cold engine).
Hi, I have the vehicle listed above it is the SEL model. It has 3.0 V^ Duratec engine. My problem is that car does not blow any heat at idle. Heat starts blowing only at higher rpm’s, I have changed coolant, thermostat, coolant reservoir and cap as well as flushed heater core which had no rust in it.
The only hose coming of heater core outlet goes to the throttle body cooling line (this throttle body needs to be cooled with coolant). Both hoses coming into the firewall were cold until you rev and hold 2000 rpm. Then they become warm to the touch and then after thirty seconds back to normal room temperature. So my solution so far. 🙂
This sounds like a typical problem these vans had which is they get air trapped in the heater core which makes it difficult for coolant to enter the heater, This is why it only works when the engine is revved. I would make sure the coolant is full then start the engine and turn the heater on full blast.