Have you tried revving with bonnet open and using your hand to throttle it, with the doors shut your eliminate the whistle through stereo if it’s still loud and clear, if still there it’s got to be a split hose somewhere, could be anything connected to the inlet, cruise control, vacumn hoses, have a look round, it’s most probably in front of you.
Gilbertd wrote:
You haven't got the stereo on have you? That sounds like alternator whine through a stereo usually caused when the bonnet earth strap isn't connected or an alternator suppressor isn't fitted (but there isn't one on a P38 anyway). Does it get louder if you turn the stereo up?
Standard radio and DSP has been swapped for an Android double din and door amps, had to turn music down/off to hear it.
no10chris wrote:
You sure someone hasn’t swapped out your lump for a tdi, sounds like a turbo whistle, definitely one to think about,,
They better bloody not have lol
Gilbertd wrote:
Not making that V8 rumble they haven't. What exhaust are you running David? It sounds wonderful.
Allmakes mild steel standard exhaust from Maltings Offroad (and probably several other places).
no10chris wrote:
Have you tried revving with bonnet open and using your hand to throttle it, with the doors shut your eliminate the whistle through stereo if it’s still loud and clear, if still there it’s got to be a split hose somewhere, could be anything connected to the inlet, cruise control, vacumn hoses, have a look round, it’s most probably in front of you.
That will be my next test...when it comes back again. Aren't intermittent problems just the best?
That will be my next test...when it comes back again. Aren't intermittent problems just the best?
Like my tick over, I steamed in changing bits to find the gas hose jammed under the throttle linkage, the way it’s been run needs my plumbing skills, I’m wondering how it will run with 15mm copper supplying it, lol.
Gilbertd wrote:
Not making that V8 rumble they haven't. What exhaust are you running David? It sounds wonderful.
https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F262391772282
This is what I bought, the 94-99 is £274.99 and both are a good bit cheaper if you contact them to join their Trade Club
Watched the vid but speakers on this laptop are crap and my hearing isn't great these days (DJing ear abuse now taking it's toll!).. Couldn't hear much at all so nothing to add except does it still do it running on petrol? I think I mentioned LPG reducers can hum earlier on thread.
It does happen on both fuels. The video doesn't show the change over from LPG to petrol and back again, I did that before I started recording.
The noise was exactly the same on both fuels.
Gilbertd wrote:
You haven't got the stereo on have you? That sounds like alternator whine through a stereo usually caused when the bonnet earth strap isn't connected or an alternator suppressor isn't fitted (but there isn't one on a P38 anyway). Does it get louder if you turn the stereo up?
We might have a winner.
It happened again this morning on my way to work. In the video, I only stopped my music to hear it rather than turned the radio off. Before starting the recording I tried turning the volume all the way down but that had no effect on the noise - I then stopped what I was playing as it was a podcast and I didn't want to miss too much of it.
This time, I actually switched the radio off and the noise went away instantly. It didn't come back when I turned the radio on though.
Sounds like you have a grounding issue with the amp install. You'll probably find it will only do it when the alternator is working harder so after starting when it is trying to put more back into the battery or when you have other things turned on to increase the load.
Hello Police I just heard gunshots. Ahh no it's OK my mate said it was just on the telly lol...
Gilbertd wrote:
Sounds like you have a grounding issue with the amp install. You'll probably find it will only do it when the alternator is working harder so after starting when it is trying to put more back into the battery or when you have other things turned on to increase the load.
Weird...I replied to this on Friday but there is no reply here!
Ah well, I'll try again. Not really keen on ripping apart the boot and testing the all the connections! I didn't add any new grounds, just used the existing ones in the DSP loom.
The video was after my drive home from work which is about 40 minutes - so the battery should have been nice and full. There was no change in load either. All I had on was the radio and the A/C and they were both running for the whole journey. The noise started just a couple of minutes before I took the video.
I think I might just learn to live with it unless it causes any other, more significant, issues.
Lpgc wrote:
Hello Police I just heard gunshots. Ahh no it's OK my mate said it was just on the telly lol...
Huh? I feel like I'm missing something or that something just went over my head lol
Only kidding mate... The moment you realise the 'engine problem' sound is coming from the speakers lol.
Ah, I get it now :)