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Tonto
P Plater
67 Posts
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 Posted - 09 Sep 2010 : 8:24:31 PM
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Hi all....well, got a EBayed vn cluster that has vr/vs dials etc.
been in for 3 days and works an absolute treat....
but the weird part is...while the engine was running there was a high pitched noise through the speakers when radio is on.
so i replaced the antenna....no difference.
sounds like : High pitch.like ringing in the ear. not constant but broken up like morse code, and sometimes as loud as whats on the radio, sometimes barely audible.
only hear it on AM Frequency.
any ideas...could a cluster cause this.
a mate at work suggested i install a ..(forget what its called)...thats hooked up to the stereo...he said it fixed the same problem in his commodore
Cheers...
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dryVN
Fully Licenced
228 Posts
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Posted - 09 Sep 2010 : 8:39:57 PM
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Hey Tonto , i had this same problem in my Calais and its the tiny speaker in the dash cluster for the warning sounds.
I am assuming being a later model dash that this speaker was probably fitted standard aswell.
Remove the dash unit and unscrew the tiny screws that hold the clear panel for all the warning lights.
Pop that off and remove the small metal cylinder in the middle or where applicably located , about the size of a 5 cent piece.
It will easily pull out by hand as its only held in with pins, bolt the cover back on and re-install the dash.
Some cars have this feature and some dont but give it a try, hope this fixes it. Cheers. |
Edited by - dryVN on 09 Sep 2010 8:41:01 PM |
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Tonto
P Plater
67 Posts
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Posted - 09 Sep 2010 : 8:49:07 PM
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Cheers Dryvn...will do tomorrow after work..did not even know that the cluster had it's own warning sounds.
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Edited by - Tonto on 09 Sep 2010 8:52:59 PM |
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dryVN
Fully Licenced
228 Posts
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Posted - 09 Sep 2010 : 9:03:24 PM
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With VN's these are the one's = Low fuel , overheat , Over speed , headlights on and door open.
I suspect that with the factory stereo wiring and maybe complete with the factory integrated Alarm system the sound is somehow amplfied
through the complete sound system ??? , and mine was really loud and unbearable to listen too with all that high pitched beeping.
Removed this dash speaker and problem solved. |
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Tonto
P Plater
67 Posts
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Posted - 14 Sep 2010 : 12:15:51 AM
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Hey Dryvn...pulled cluster out. And no speaker that i can see, must be the basic model with taco??.
Damn thing...still making that horrid noise.
and tonight when i got home from work, car just stalled in park...had a miss or 2 last week as well....anything i should look for, Has new plugs and leads...Fuel maybe dirty?
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dryVN
Fully Licenced
228 Posts
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Posted - 14 Sep 2010 : 05:55:26 AM
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| Sorry to here that didn't fix it , Its rare to get dirty fuel if you fill up fairly regular at the same station , but its possible. I would not be sure about the stalling but check you fault codes as explained in other parts of this site. The most common problems are a faulty coil pack or Crank angle sensor that cause stalling and rough running. Then again sometimes just cleaning out the fuel system eg. injectors/filter/pump can work great if needed. |
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VNSVLE
Forum Moderator
1316 Posts
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Posted - 14 Sep 2010 : 07:48:56 AM
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| If it is noise when the radio is on you will need to install a noise suppressor. This should stop engine noises coming through the stereo. They are pretty cheap and you can get them from supercheap/autobarn type shops. |
What's the difference between understeer and oversteer?
Understeer is when the driver is scared.
Oversteer is when the passenger is scared. |
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Tonto
P Plater
67 Posts
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Posted - 14 Sep 2010 : 1:13:19 PM
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| noise is only there when cluster is in....take cluster out, noise gone |
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Mechknight73
National Driver
1001 Posts
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Posted - 14 Sep 2010 : 1:18:40 PM
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Noise suppressors are usually fitted to the positive battery lead of a car stereo. Sometimes they are even bigger ones that are hooked up to major circuits on the harness to keep it even quieter.
As for the grubby fuel, remember this; petrol will float on water. All service station fuel storage tanks are 20,000 litres or more, and are cylindrical in shape. The one time you should avoid getting fuel at a servo is just after or during refilling operations, because if there's a lot of water in the bottom of the tanks, this is the time you're most like to get some in the tank. Also, there are organisms that feed on hydrocarbon, that also get disturbed by refilling. I know this because I worked in a roadhouse years ago. |
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Tonto
P Plater
67 Posts
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Posted - 15 Sep 2010 : 12:14:57 AM
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I don't think its the fuel, Left work tonight at 10.30pm, and it was sort of 'jerking' missing . Nearing home i got her up to 140, then it felt like something grabbed the back of the car for a split second. I have a spare coil pack and will replace tomorrow. Leads and sparks are not even 2 years old so i am thinking they should be ok....
Now that i think about it, i remember a similar feeling years ago...but more constant and happened immediatly...not gradually like this time.
Turned out it was a faulty lead, i think i will go to the local garage tomorrow and he can test them first.
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Tonto
P Plater
67 Posts
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Posted - 15 Sep 2010 : 12:17:02 AM
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| as for the noise coming from the speakers.....cd's for now until i get this problem fixed |
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Tonto
P Plater
67 Posts
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Posted - 15 Sep 2010 : 11:34:18 AM
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ok...here's the heads up....Local mechanic on holidays again, so took leads of coil pack. No 2 seemed a bit dirty and 3 and 1 had a bit of that white powdery crap similar to battery terminals, which just blew away.
Replaced coil pack and went for a 5k drive and all seems ok...even in park with revs on about 2000, it is nice and smooth.
Thank for your help mechnight and dryVn.....will get back on topic now and see whats wrong with me radio....cheers |
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Mechknight73
National Driver
1001 Posts
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Posted - 15 Sep 2010 : 7:51:09 PM
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| Guaranteed it's electrical "noise;" most notable on the AM frequencies. Unsure about a VN's alternator, but it's often there that factory noise suppressors are fitted. |
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Tonto
P Plater
67 Posts
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Posted - 16 Sep 2010 : 12:06:58 AM
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Yep Mechnight, i can only hear it on am.
what could be the reason the noise is only heard when this new cluster is in??.I though it might have been the taco or something like that.
Any way, who would you suggest i see to fix the problem?
cheers
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Mechknight73
National Driver
1001 Posts
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Posted - 16 Sep 2010 : 05:43:22 AM
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| I would speak to Howards Instruments (can't remember the number, but a Google search will quickly find it.) I'm unsure of how Holden connected the tacho on a VN, but some manufacturers use a feed from the alternator to run a tacho. I think it's that it measures the charge from the alternator and translates it to an rpm reading on the tacho. |
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Tonto
P Plater
67 Posts
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Posted - 16 Sep 2010 : 1:04:27 PM
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this is from Howards....
"To my knowledge the tacho signal comes from the coil pack.
Need to keep your radio wiring if non original well insulated.
If original there are noise suppressant devices on the market thru audio stores"
Regards rodger.
so....what is easiest....insulate or buy noise suppressant, might give tonkins in mount gambier a ring.
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Mechknight73
National Driver
1001 Posts
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Posted - 16 Sep 2010 : 3:37:11 PM
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| You can do both, but the noise suppressor is easier to do,as it's a quick patch into the wiring. To insulate the wiring usually meas some kind of foil shielding, of the kind that you often see on computer network cables. The noise suppressor is probably a slightly cheaper option too. |
Edited by - Mechknight73 on 16 Sep 2010 3:38:12 PM |
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