Knocking noise when accelerating

morphinemitt · Feb 27th, 2007, 21:14

Fear not, me hearties, not a problem, but a SOLUTION!
Here goes... I had a knocking noise on the V40 which sounded like an engine mount/wheel bearing noise when accelerating reasonably hard in 1st & 2nd gear. Anyway, after my local Volvo specialist had a look, ( Paul A Wenlock, in Telford. 01952 691291. Excellent!) the problem was pinpointed as the tie-bar thingy that connects to the front lower suspension arms. Apparently, they get knocked about on speed bumps etc, so he whipped out the 15mm pins that hold it in place, straightened it with some gentle persuasion from a hammer, and hey presto! problem solved.
It's a flat bar, slightly rounded, and positioned at the rear of the front wheels if you're looking for it, you can see where it touches the chassis/sump and causes the problem.
Hope this helps future searchers.

My nipper said!!!!

Dog_Book · Feb 28th, 2007, 19:09

Any chance of a photo? To pin point the area, cheers

morphinemitt · Feb 28th, 2007, 20:33

Quote:

Originally Posted by Dog_Book

Any chance of a photo? To pin point the area, cheers

I'll try and get under her at the weekend. Wahey!!
Will post pictures then.

morphinemitt · Mar 2nd, 2007, 14:32

Right then, here goes:
Picture one shows the point where it was touching the chassis and making the noise, while picture 2 shows the position of the locating pins.
Hope they're clear enough to get some idea from.

Dog_Book · Mar 5th, 2007, 19:16

Mine dosent apear to have one of these bars. Anyone know if its supposed to?

Big T · Mar 5th, 2007, 19:42

Very interesting, i have a knocking noise at the mo which i thought was engine mount, will have to check under the car 1st i feel!!!

Cheers!!!

matt_pc · Apr 6th, 2007, 10:36

My T4 has just been to the garage with what i suspect is the same problem. My mechanic had a good look around underneath and said that all he could see that maybe the problem was slightly excessive movement on one of the gearbox mounts which i had him change for me. To be fair it made a small improvement but its stil there. Hopefully i can go back to him with this new info and gey it fixed for good.

Many thanks

DutchV40 · Aug 15th, 2007, 08:01

I have a 1.8 from 1999.
The front anti-roll bar is not visible under the car as on the pic.
I see one much higher (harder to see). Is this a phase 1-2 difference?

mharriso · Aug 16th, 2007, 01:11

Dutch, then bar shown in the pics looks to be a lower subframe brace. (Please correct me if i'm wrong anyone).

The Anti role bar is routed across the top of the subframe through x2 bushes and attaches to the front Mac pherson strut via a drop link.

Please do not confuse these two items.

DutchV40 · Aug 16th, 2007, 09:50

Ok,

So I don't have this lower subframe brace!
Haynes does not show it either...
Is it an option then?

Feb 27th, 2007, 21:14	#1
morphinemitt My nipper said! Last Online: Aug 1st, 2022 20:15 Join Date: Oct 2006 Location: Who knows?	Knocking noise when accelerating Fear not, me hearties, not a problem, but a SOLUTION! Here goes... I had a knocking noise on the V40 which sounded like an engine mount/wheel bearing noise when accelerating reasonably hard in 1st & 2nd gear. Anyway, after my local Volvo specialist had a look, ( Paul A Wenlock, in Telford. 01952 691291. Excellent!) the problem was pinpointed as the tie-bar thingy that connects to the front lower suspension arms. Apparently, they get knocked about on speed bumps etc, so he whipped out the 15mm pins that hold it in place, straightened it with some gentle persuasion from a hammer, and hey presto! problem solved. It's a flat bar, slightly rounded, and positioned at the rear of the front wheels if you're looking for it, you can see where it touches the chassis/sump and causes the problem. Hope this helps future searchers. My nipper said!!!! Last edited by morphinemitt; Feb 27th, 2007 at 21:18.

Feb 28th, 2007, 19:09	#2
Dog_Book Idiot Last Online: Apr 21st, 2019 17:29 Join Date: Nov 2006 Location: Derby	Any chance of a photo? To pin point the area, cheers __________________ Vectra VXR estate convert Experience = V40 1998 2.0 CD lots of mods Busy pestering the poor sods here now

Mar 5th, 2007, 19:16	#5
Dog_Book Idiot Last Online: Apr 21st, 2019 17:29 Join Date: Nov 2006 Location: Derby	Mine dosent apear to have one of these bars. Anyone know if its supposed to? __________________ Vectra VXR estate convert Experience = V40 1998 2.0 CD lots of mods Busy pestering the poor sods here now

Mar 2nd, 2007, 14:32	#4
morphinemitt My nipper said! Last Online: Aug 1st, 2022 20:15 Join Date: Oct 2006 Location: Who knows?	Right then, here goes: Picture one shows the point where it was touching the chassis and making the noise, while picture 2 shows the position of the locating pins. Hope they're clear enough to get some idea from.

Mar 5th, 2007, 19:42	#6
Big T Jimmy's Mate! Last Online: Oct 16th, 2010 20:49 Join Date: Oct 2004 Location: Dunstable View Photos By: Big T	Very interesting, i have a knocking noise at the mo which i thought was engine mount, will have to check under the car 1st i feel!!! Cheers!!!

Apr 6th, 2007, 10:36	#7
matt_pc 2001 V40 T4 Last Online: Jan 4th, 2012 15:23 Join Date: Apr 2007 Location: Bath	My T4 has just been to the garage with what i suspect is the same problem. My mechanic had a good look around underneath and said that all he could see that maybe the problem was slightly excessive movement on one of the gearbox mounts which i had him change for me. To be fair it made a small improvement but its stil there. Hopefully i can go back to him with this new info and gey it fixed for good. Many thanks

Aug 15th, 2007, 08:01	#8
DutchV40 Senior Member Last Online: Apr 5th, 2011 12:21 Join Date: May 2007 Location: Brabant	I have a 1.8 from 1999. The front anti-roll bar is not visible under the car as on the pic. I see one much higher (harder to see). Is this a phase 1-2 difference?

Aug 16th, 2007, 01:11	#9
mharriso Master Member Last Online: Jul 29th, 2009 01:20 Join Date: Apr 2007 Location: gold coast View Photos By: mharriso	Dutch, then bar shown in the pics looks to be a lower subframe brace. (Please correct me if i'm wrong anyone). The Anti role bar is routed across the top of the subframe through x2 bushes and attaches to the front Mac pherson strut via a drop link. Please do not confuse these two items.

Aug 16th, 2007, 09:50	#10
DutchV40 Senior Member Last Online: Apr 5th, 2011 12:21 Join Date: May 2007 Location: Brabant	Ok, So I don't have this lower subframe brace! Haynes does not show it either... Is it an option then?

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