Snowbear77 Member 102 Member For: 6y 30d Gender: Male Location: Perth Posted 30/04/23 03:14 PM Posted 30/04/23 03:14 PM Just within the last week, my dash has developed a 'sound of light crackling, under the dash. It stops ( temporary when I change the vents direction, or change between internal or external ventilation. It dosent stop when I turn the air con unit off. It just keeps on crackling. Once, it kept happening after even removing the keys, but stopped when I locked the car. Sometimes, when I've driven it lately, there's no noise at all. Anybody come across this before........?
Snowbear77 Member 102 Member For: 6y 30d Gender: Male Location: Perth Posted 01/05/23 09:00 AM Author Posted 01/05/23 09:00 AM (edited) Today, the crackling started today as I turned the car to accessories after being parked for 12 hours...........audio was off, air con was off. I got my head down below the steering wheel , and it sounds like it could be coming from the back of the ICC or just to the right of it.....I tried to record it on my phone, though I couldnt hear it when I played the video back...... Edited 01/05/23 09:01 AM by Snowbear77
k31th less WHY; more WOT Site Developer 30,103 Member For: 18y 5m 12d Gender: Male Location: Melbourne Posted 01/05/23 09:12 AM Posted 01/05/23 09:12 AM sounds like you need to get your hearing checked ... seriously, though, I don't have a clue what could be doing that other than a short that's sparking with a small/tiny voltage... but without a recording we'd be poking in the dark to figure out what's going on...
Puffwagon Legacy Donating Member 16,348 Member For: 11y 7m 23d Gender: Not Telling Posted 01/05/23 09:27 AM Posted 01/05/23 09:27 AM 7 minutes ago, k31th said: we'd be poking in the dark I'll poke you in the dark In all seriousness though, the description might point to the issue but I've never pulled a dash out, so couldn't tell you what it is.
k31th less WHY; more WOT Site Developer 30,103 Member For: 18y 5m 12d Gender: Male Location: Melbourne Posted 01/05/23 09:48 AM Posted 01/05/23 09:48 AM 20 minutes ago, Puffwagon said: I'll poke you in the dark sounds enticing
Snowbear77 Member 102 Member For: 6y 30d Gender: Male Location: Perth Posted 01/05/23 09:56 AM Author Posted 01/05/23 09:56 AM Ok, I'll try again for a recording.........
hoe Member 77 Member For: 10y 4m 27d Posted 01/05/23 11:43 AM Posted 01/05/23 11:43 AM I suspect hvac fan Bearings are flogged out and fan is just touching shroud.
Snowbear77 Member 102 Member For: 6y 30d Gender: Male Location: Perth Posted 01/07/23 09:00 AM Author Posted 01/07/23 09:00 AM update. The sound stopped completely, until I recently turned the heater on during a cold drive, and the knocking has since been constant in the last 2 days of driving. This knocking is constant even when the air con/heater is completely turned off . If what you suspect @hoe about the hvac, is it a 'dash out' job to replace the hvac bearings?
Snowbear77 Member 102 Member For: 6y 30d Gender: Male Location: Perth Posted 01/07/23 10:37 AM Author Posted 01/07/23 10:37 AM Could these symptoms mentioned in the previous post be related to the HVAC system?
biddie_fiddler [IMPULSIV3] Legacy Donating Member 1,374 Member For: 7y 5m 24d Gender: Male Location: Perth, WA Posted 09/07/23 01:05 AM Posted 09/07/23 01:05 AM Do you have dual zone a/c? If you do, set it to heat and check both sides are hot. If not you may have a broken mixer shaft. They can make funny noises when broken
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