Knocking sound

Tony.H · Oct 9th, 2005, 21:57

Hello!
My 1996 940 2.3se turbo has a rhythmic knocking which is noticeable from the passenger footwell and left wheel arch.It increases with speed,does not dissapear when clutch down and is only heard at idle.Cant hear it from under bonnet,engine good!Any ideas anyone? Apart from that its a great car,just curious!

Oct 9th, 2005, 22:06

Can you clarify

'increases with speed ..... and is only heard at idle' as a car cannot idle at speed unless the clutch is depressed.

Karl

Tony.H · Oct 9th, 2005, 22:45

Hi
Thanks for reply.The knock is only noticeable at idle 700 to1000 rpm approx,above that it is not heard,i suspected gearbox,hence my note about (de)pressing clutch pedal not making a difference.Puzzled as to why sound is so localised to passenger footwell area.
Thanks, Tony

ivor940 · Oct 10th, 2005, 08:04

There was another post re slight knocking on a Turbo, and it was suggested that the fuel pipes ( which run under passenger side ) caused such a noise.

ivor940

Tony.H · Oct 11th, 2005, 22:58

Many thanks ivor940,i shall keep a eye (listen) on it!
Tony.H

Oct 9th, 2005, 21:57	#1
Tony.H New Member Last Online: Jun 20th, 2007 08:01 Join Date: Oct 2004 Location: Bath	Knocking sound Hello! My 1996 940 2.3se turbo has a rhythmic knocking which is noticeable from the passenger footwell and left wheel arch.It increases with speed,does not dissapear when clutch down and is only heard at idle.Cant hear it from under bonnet,engine good!Any ideas anyone? Apart from that its a great car,just curious!

Oct 9th, 2005, 22:06	#2
karlp Guest Location:	RE: Knocking sound Can you clarify 'increases with speed ..... and is only heard at idle' as a car cannot idle at speed unless the clutch is depressed. Karl

Oct 9th, 2005, 22:45	#3
Tony.H New Member Last Online: Jun 20th, 2007 08:01 Join Date: Oct 2004 Location: Bath	RE: Knocking sound Hi Thanks for reply.The knock is only noticeable at idle 700 to1000 rpm approx,above that it is not heard,i suspected gearbox,hence my note about (de)pressing clutch pedal not making a difference.Puzzled as to why sound is so localised to passenger footwell area. Thanks, Tony

Oct 10th, 2005, 08:04	#4
ivor940 Master Member Last Online: Sep 16th, 2013 07:55 Join Date: Dec 2003 Location: Malahide View Photos By: ivor940	RE: Knocking sound There was another post re slight knocking on a Turbo, and it was suggested that the fuel pipes ( which run under passenger side ) caused such a noise. ivor940

Oct 11th, 2005, 22:58	#5
Tony.H New Member Last Online: Jun 20th, 2007 08:01 Join Date: Oct 2004 Location: Bath	RE: Knocking sound Many thanks ivor940,i shall keep a eye (listen) on it! Tony.H

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