Ok, another odd one for you chaps. My car is making an intermittent funny noise that sounds like it's coming from behind the dash or on the bulkhead of the engine bay. It does it whilst you're accelerating and decelerating between 1800 and 3200rpm and sounds like someone slowly opening a really creaky gate in time with the revs. Another way of describing it would be someone twanging a small plastic ruler on the edge of a desk and moving the ruler in thus increasing the pitch.
I can't for the life of me think what it could be. It's not affecting performance or anything, but the noise is starting to get on my nerves! It doesn't always do it, so for example, you accelerate from a standing start and as you hit 1800 rpm until you change gear...then it silent, that is until a minute later when you decelerate and the noise happens again.
At first I thought it was the turbo spooling up and spinning down but it appears to do it at really low rpm (before turbo spool up) and at higher speeds too if you back off the throttle.
Anyone else had this and can someone give me an insight into what it might be?
Cheers,
Chris.
Wierd noise Xantia TD
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I think it is something hydraulic, both mine do it, sometimes I notice it more than others, could be something to do with the pressure reg as paranoid says, I thought it was gearbox to start with but fairly certain it isn't. Only other thing is the turbo, as it only happens when I'm accelerating
Pete
Pete
Driving around in my newly aquired DTRturbo with the interior ripped out. (have to find a water leak and dry out the cabin).
This makes all strange noises come into the cabin very clear and loud - as there is a direct opening at the gearstick.
<font color="blue"><i>I have exactly the same noise Chris</i></font id="blue"> [:D]
- and really : the noise is best described as a plastic ruler played with to make it go twwwaaannnng [:p]
This noise is a mystery for me on the turboDiesel.
On petrols this noise would be the wellknown rattling/vibrating hot air intake shield/cowling. A very common nuisance.
I'll have a go on the protective heatshield clipped onto the steering rack. I remember I grapped in this area when I replaced the front HC. I'll let you know - when I know [:)]
This makes all strange noises come into the cabin very clear and loud - as there is a direct opening at the gearstick.
<font color="blue"><i>I have exactly the same noise Chris</i></font id="blue"> [:D]
- and really : the noise is best described as a plastic ruler played with to make it go twwwaaannnng [:p]
This noise is a mystery for me on the turboDiesel.
On petrols this noise would be the wellknown rattling/vibrating hot air intake shield/cowling. A very common nuisance.
I'll have a go on the protective heatshield clipped onto the steering rack. I remember I grapped in this area when I replaced the front HC. I'll let you know - when I know [:)]
Yaaay I'm not the only one!! Yes, it is like a growl that increases/ decreases pitch slightly with revs and it appears to do it at random. The opening and closing of the EGR valve would be a likely candidate as mine is the late TurboD with the electronic Bosch fuel pump that has all the fancy emissions gizmos.
Another thing I've though of is perhaps the electronic timing advance thats bolted to the bulkhead as thats where it sounds like it's coming from. Thing is though, this does not work on my car hence I've adjusted the pump screws all the way out to fix the idle at the hot setting of 850rpm.
It's gotten worse recently, perhaps to do with the hot weather, I'm not sure. Thing is, revving the car at idle doesn't do it...you have to be in gear and moving (loading the engine) hence why I thought it was turbo related.
Another thing I've though of is perhaps the electronic timing advance thats bolted to the bulkhead as thats where it sounds like it's coming from. Thing is though, this does not work on my car hence I've adjusted the pump screws all the way out to fix the idle at the hot setting of 850rpm.
It's gotten worse recently, perhaps to do with the hot weather, I'm not sure. Thing is, revving the car at idle doesn't do it...you have to be in gear and moving (loading the engine) hence why I thought it was turbo related.