Ford Focus when i go thru the gears and press the accelerator it sounds like the heater fan comes on full blast, but when i take it off the sound goes off,, help

Car: Ford Focus
Variant: 18tdi
Model Year: 2006
Categories: Running Rough, Starting & Power Loss
Car runs sound, but when I press the throttle through the gears it sounds like the heater fan is turned on full blast, but only when I'm at high revs , very strange, can anyone advise please
Posted: Jun 26, 2013 (11 years ago)
IS it the heater fan that's making the noise you hear or is it the turbo ?
Posted Jun 26, 2013 (11 years ago)
It sounds like the heater fan to be honest, like the air is coming thru the vents to clear the windscreen
Posted Jun 26, 2013 (11 years ago)
You say its like the air is coming through the vents. But can you feel the air coming through the vents???...
Posted Jun 26, 2013 (11 years ago)
Yes thats what it sounds like but there is no air coming thru the vents at all
Posted Jun 26, 2013 (11 years ago)
check for leak on turbo intercooler pipes
Posted Jun 27, 2013 (11 years ago)

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