Strange "honking" sound from right rear when hot
#11
RE: Strange "honking" sound from right rear when hot
ORIGINAL: NH_USA
Seriously does it sound like the horn that signals thedoors are locked?
Seriously does it sound like the horn that signals thedoors are locked?
#12
RE: Strange "honking" sound from right rear when hot
ORIGINAL: heisse_mkII
So you are thinking that when it gets hot, that somehow it is shorting out and causing the honking of the horn? I thought there was only one horn in the car.
So you are thinking that when it gets hot, that somehow it is shorting out and causing the honking of the horn? I thought there was only one horn in the car.
#13
RE: Strange "honking" sound from right rear when hot
ORIGINAL: heisse_mkII
It should be located under the right rear passenger door, near where your honking sound is coming from.
It should be located under the right rear passenger door, near where your honking sound is coming from.
#14
RE: Strange "honking" sound from right rear when hot
this may sound werid but it sounds like the little security horn in the trunk.. like its malfuntioning or something.. you should disconect it once and see if thats it... its behind the jack kit on the left side of the trunk you have to take the jack out to get to it..... try it once.. thats just what it sounds like...lol i know its weird but its worth a shot... just leave it un hooked for a day
#15
RE: Strange "honking" sound from right rear when hot
OK, I found it, or at least part of it! Today i spent about 20 minutes with the car jacked up going over every inch (that I could) of the right rear of the car. It is defiantly fuel related but I don't think its the filter. I felt the fuel filler neck and it was vibrating a little when the "honking" was happening. I then unscrewed the fuel cap, it mad the vacuum/venting noise as it released pressure and immediately the honking stopped. So,p could it be something so simple as a gas cap or could it be something else? Fuel caps are cheap so I am going to pick one up tomorrow and see if that does the trick.
#17
RE: Strange "honking" sound from right rear when hot
It sounds like a fuel pump that hates you, but seriously fuel pumps heat up after usage, sometimes this causes the overload to partially open, although mine did not honk when hot, it buzzed and made a high pitch whine. It was indeed a failing fuel pump which failed, I thingk that you should have the rollover nipple service and see if that makes any difference. If not pull the backseat and listen to the fuel pump, it is alot easier to hear with the seat out.
#18
RE: Strange "honking" sound from right rear when hot
I had a 2000 A6 2.7T that did the same thing. When it was hot I'd get that little honking noise every 1 or 2 seconds for several minutes after I shut the car off. I was told it was the fuel pump cooling down and relieving built-up pressure. I don't know enough to tell you if that's accurate or possible, but since releasing the pressure from the gas cap made the noise stop, I assumed it was accurate and went with it.
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