Engine makes loud/roar sound when accelerating
- Thread starter CARGUY40
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Typical working operation for a mechanical clutch fan. At lower RPM's the fan clutch is engaged so the fan is spinning at engine speed for better cooling. Hold the revs and the roar should disappear as the fan clutch starts to slip letting the fan slow down.
sounds like the typical failure of an electronically controlled fan clutch. They are designed to fail safe - which means the fan is on all the time. I would guess you need to replace your fan clutch.
I took it to a mechanic and he said its coming from the fan and i would need to replace the fan clutch. When i rev the motor you can hear the roar but when its just idling nos ound so this is not normal for it to roar when reving or accelerating?
Originally Posted By: boostedtsiawd
I took it to a mechanic and he said its coming from the fan and i would need to replace the fan clutch. When i rev the motor you can hear the roar but when its just idling nos ound so this is not normal for it to roar when reving or accelerating?
Yes.
I took it to a mechanic and he said its coming from the fan and i would need to replace the fan clutch. When i rev the motor you can hear the roar but when its just idling nos ound so this is not normal for it to roar when reving or accelerating?
Yes.
4wd
$50 site donor 2026
My GMC roars for a block after a long idle (clutch fan) ... Always has ...
I spun the fan today - all is tight ...
I spun the fan today - all is tight ...
Originally Posted By: boostedtsiawd
I took it to a mechanic and he said its coming from the fan and i would need to replace the fan clutch. When i rev the motor you can hear the roar but when its just idling nos ound so this is not normal for it to roar when reving or accelerating?
If you hold the engine about 2,000rpms the fan roar should disappear. If it still roars the fan clutch went into failsafe so it's stuck engaged. It's normal to not hear the fan roar when idling because the fan isn't spinning as fast.
I took it to a mechanic and he said its coming from the fan and i would need to replace the fan clutch. When i rev the motor you can hear the roar but when its just idling nos ound so this is not normal for it to roar when reving or accelerating?
If you hold the engine about 2,000rpms the fan roar should disappear. If it still roars the fan clutch went into failsafe so it's stuck engaged. It's normal to not hear the fan roar when idling because the fan isn't spinning as fast.
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