MINI2

droideka · Jan 5th, 2003, 02:32 PM

After I installed a MTX 4 channel amp under the driver seat and replace the rear 6x9" speakers, I heard the strange high pitch 'weeee' sound inside the cabin. It gradually increase when the revs starts going up and disappears when the car stops.

The sound is still there even I turned off the stereo so it is not from the speakers. Is that some sort of circuitry or electrical problem?

Also after they took the interior apart (including the airbag plugs) for the installation, the air bag light on the dash comes on when I start my car, did they screw up the connections or is merely a precautious measure everytime someone tampered with the airbag connection, which need to take back to the servicing for resetting?

Would any electrical enthusiasts out there give me some answer just to ease my mind before I take back to the servicing?

Dom · Jan 5th, 2003, 04:06 PM

They've cocked it up. The high pitched whine is coming from a bad earth and the airbag light shouldn't be coming on... take it to your dealer to check that one but ensure the place that fitted the amp will pay for it...

Dom

ToreB · Jan 5th, 2003, 05:24 PM

Ignition must not be turned on while seat connectors is disconnected.
The car's computer will detect a fault in the airbag system and the indicator must be reset by a Mini Service shop.

A high pitched whine is normally caused by ground loops (current flows in ground leads. The whine is made in the generator.
To correct this, check all connections for signal and other ground connections.
Use good leads directly to battery for power supply, and beware of signal lead shield connections.
Regards, Tore

minhi · Jan 5th, 2003, 08:42 PM

check out this link for help

http://www.mini2.com/forum/showthrea...threadid=21643

if you're getting the whine with the radio off, i assume the amp is still powered on? that tells me there is a ground problem with the amp. that might not be the only problem, read the above thread for ideas.

droideka · Jan 5th, 2003, 11:14 PM

The whining sound disappears this morning I run my car. What actually happened? Do I still need to fix it or I just need to take it back to check the grounding anyway.

Thank you for all you guys help!

minhi · Jan 5th, 2003, 11:44 PM

i would still double check the grounds, if it just "went away" it could be a loose connection--which would also be very bad. i assume they wired the amp through a fused power connection? if somethings loose you still want to car to be protected. rarely do things just "go away" permanently.

Jan 5th, 2003, 02:32 PM	#1
droideka MINI2 Regular Join Date: Aug 2001 Location: Hong Kong Local Time: 06:42 AM Posts: 109 Offline	Need help on strange sound after amp installaton After I installed a MTX 4 channel amp under the driver seat and replace the rear 6x9" speakers, I heard the strange high pitch 'weeee' sound inside the cabin. It gradually increase when the revs starts going up and disappears when the car stops. The sound is still there even I turned off the stereo so it is not from the speakers. Is that some sort of circuitry or electrical problem? Also after they took the interior apart (including the airbag plugs) for the installation, the air bag light on the dash comes on when I start my car, did they screw up the connections or is merely a precautious measure everytime someone tampered with the airbag connection, which need to take back to the servicing for resetting? Would any electrical enthusiasts out there give me some answer just to ease my mind before I take back to the servicing?

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Jan 5th, 2003, 04:06 PM	#2 (permalink)
Dom Test thread infiltrator Join Date: Oct 2001 Location: Swindon Local Time: 11:42 PM Posts: 8,543 Offline	They've cocked it up. The high pitched whine is coming from a bad earth and the airbag light shouldn't be coming on... take it to your dealer to check that one but ensure the place that fitted the amp will pay for it... Dom

Jan 5th, 2003, 05:24 PM	#3 (permalink)
ToreB MINI2 Regular Join Date: Oct 2002 Location: Oslo, Norway Local Time: 10:42 PM Posts: 129 Offline	Ignition must not be turned on while seat connectors is disconnected. The car's computer will detect a fault in the airbag system and the indicator must be reset by a Mini Service shop. A high pitched whine is normally caused by ground loops (current flows in ground leads. The whine is made in the generator. To correct this, check all connections for signal and other ground connections. Use good leads directly to battery for power supply, and beware of signal lead shield connections. Regards, Tore

Jan 5th, 2003, 08:42 PM	#4 (permalink)
minhi MINI2 Senior Join Date: Aug 2002 Location: Washington DC Local Time: 10:42 PM Posts: 473 Offline	check out this link for help http://www.mini2.com/forum/showthrea...threadid=21643 if you're getting the whine with the radio off, i assume the amp is still powered on? that tells me there is a ground problem with the amp. that might not be the only problem, read the above thread for ideas.

Jan 5th, 2003, 11:14 PM	#5 (permalink)
droideka MINI2 Regular Join Date: Aug 2001 Location: Hong Kong Local Time: 06:42 AM Posts: 109 Offline	The whining sound disappears this morning I run my car. What actually happened? Do I still need to fix it or I just need to take it back to check the grounding anyway. Thank you for all you guys help!

Jan 5th, 2003, 11:44 PM	#6 (permalink)
minhi MINI2 Senior Join Date: Aug 2002 Location: Washington DC Local Time: 10:42 PM Posts: 473 Offline	i would still double check the grounds, if it just "went away" it could be a loose connection--which would also be very bad. i assume they wired the amp through a fused power connection? if somethings loose you still want to car to be protected. rarely do things just "go away" permanently.

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