Startup / Idle Whine
03-14-2022, 02:06 PM
#1
Startup / Idle Whine
Hi all,
Brand new to the forums
958 Cayenne S 4.8 has a faint whine which can be heard at all times @ idle. The whine is also somewhat louder at initial startup and dies down (but I assume this is a result of the RPM's dropping).
It sounds identical to this video, which suggests it's the PS pump. I've "burped" the system using the method in the video with no success. Any ideas before I reach for the wallet and get the PS pump replaced?
Cheers.
Marco
Brand new to the forums
958 Cayenne S 4.8 has a faint whine which can be heard at all times @ idle. The whine is also somewhat louder at initial startup and dies down (but I assume this is a result of the RPM's dropping).
It sounds identical to this video, which suggests it's the PS pump. I've "burped" the system using the method in the video with no success. Any ideas before I reach for the wallet and get the PS pump replaced?
Cheers.
Marco
03-15-2022, 09:37 AM
#2
Drifting
As you research this, you’ll find (as you already did) that some claim the PS pump/system, and sometimes it is that. Others will say check the PDCC pump/system (if so equipped), and sometimes it is that too. Sometimes a serpentine belt and/or pulley issue.
But the bottom line is, some 955-958 series Cayennes just have the slight ‘whine’ at idle despite everything being in check. Not all of them, but many do. Both my 957 and 958 CTTs did it, and no issues with any components. I’ve test driven others that have had exhibited the whine too. Not sure why, but I just chalked it up to the nature of these beasts.
It is kind of annoying when you’re creeping along in a drive-thru or similar situation and your prized Porsche SUV sounds like an old, ailing Dodge Caravan.
But the bottom line is, some 955-958 series Cayennes just have the slight ‘whine’ at idle despite everything being in check. Not all of them, but many do. Both my 957 and 958 CTTs did it, and no issues with any components. I’ve test driven others that have had exhibited the whine too. Not sure why, but I just chalked it up to the nature of these beasts.
It is kind of annoying when you’re creeping along in a drive-thru or similar situation and your prized Porsche SUV sounds like an old, ailing Dodge Caravan.
03-15-2022, 11:50 AM
#3
Just imagine your car has a super charger!
Mine makes the same noise, I've tried everything and I'm 100% sure its related to power steering/pump but it works fine soooooo, not replacing it. Might replace it when I do belts/tensioners but no reason to chase a harmless noise.
Mine makes the same noise, I've tried everything and I'm 100% sure its related to power steering/pump but it works fine soooooo, not replacing it. Might replace it when I do belts/tensioners but no reason to chase a harmless noise.
03-15-2022, 03:02 PM
#5
Just imagine your car has a super charger!
Mine makes the same noise, I've tried everything and I'm 100% sure its related to power steering/pump but it works fine soooooo, not replacing it. Might replace it when I do belts/tensioners but no reason to chase a harmless noise.
Mine makes the same noise, I've tried everything and I'm 100% sure its related to power steering/pump but it works fine soooooo, not replacing it. Might replace it when I do belts/tensioners but no reason to chase a harmless noise.
03-15-2022, 04:54 PM
#6
03-15-2022, 08:03 PM
#7
Rennlist Member
I agree, Porsche noises at idle are loud. My 17 GTS is much noisier (not in a good way) than my wife’s Audi Q5
