Author |
Topic: knocking (Read 2419 times) |
|
pagey
Full Member
I'm a YaBB newbie!
Posts: 134
|
Hi all.
Had the car M.O.T'd a couple of weeks ago (passed!) and practically since driving out of the station, have developed a knocking type sound under the car. Sort of sound you would associate with a loose exhaust mounting. Visited an exhaust centre last Sat and the chap put it up in the air and give the pipes a good shaking. He said that he could find nothing wrong. I've got no idea what it could be. Any thoughts?
Kind regards.
Trev.  2.9 12 valve.
|
|
 IP Logged |
|
|
|
mrgraves
Newbie
Posts: 35
|
 |
Re: knocking
« Reply #1 on: Jun 26th, 2007, 8:22pm » |
 Quote  Modify
|
i have this prob too drives me round the bend (well when the car is running thta is )
|
|
IP Logged |
2.0 8v ghia
|
|
|
Spannerdemon
Guest
|
Front stabiliser bar bushes would be the most obvious, and very easy to fix too.
HERE
See Figure 4. These are the bushes. They wear, and even drop out. You do NOT need to remove the link arms to replace them, as they are a split bush which fits around the bar. Use some washing up liquid to lubricate them. Always do both sides. 
|
|
IP Logged |
|
|
|
Highlander
Moderator
Expert
13 Scorpios, XR4x4, Suzuki SJ413 for off road :)
Posts: 8244
|
|
Re: knocking
« Reply #3 on: Jun 26th, 2007, 9:52pm » |
Quote Modify
|
something loose, radiator? oil cooler? prop?
|
|
IP Logged |
on Oct 17th, 2011, 12:35pm, Simmo wrote:I give up !  Too much for an old boy!  |
|
|
|
|
Jonnycab
Senior Member
Former owner of 2.3 Ultima Facelift saloon
Posts: 3900
|
|
Re: knocking
« Reply #4 on: Jun 27th, 2007, 12:57am » |
Quote Modify
|
If the knocking seems to be coming from the front end & is a heavy metalic knock when driving straight, on uneven roads, then I'd agree with Spannerdemon on this one
The bushes or the part of the roll bar where they wrap around can get badly worn & the roll bar ends up knocking on the underneath of the front of the engine on uneven road surfaces
If it happens more when turning the wheel when pulling out at a junction etc, then I'd say it was a wishbone balljoint
|
|
IP Logged |
|
|
|
Tompion
Administrator
1997 2.3 Ultima estate.
Posts: 2918
|
|
Re: knocking
« Reply #5 on: Jun 27th, 2007, 1:24am » |
Quote Modify
|
Make sure they've left nothing behind, my brother found a metal bar on a ledge under his car after an MOT.
|
|
IP Logged |
ABS multiplug wheel sensor pins MK IV or MK 20
|
|
|
pagey
Full Member
I'm a YaBB newbie!
Posts: 134
|
|
Re: knocking
« Reply #6 on: Jun 27th, 2007, 6:22pm » |
Quote Modify
|
Thanks for the advice chaps. Am taking the car to the guy who does the servicing for me on Sat and he's going to give it a run and see what he thinks. probably put it up on the hoist if he has time 'cos he's slotted me in to his busy schedule. Will pass on your suggestions. Thanks again.
Trev.
|
|
IP Logged |
|
|
|
big_neil
Full Member
I'm a YaBB newbie!
Posts: 389
|
|
Re: knocking
« Reply #7 on: Jun 27th, 2007, 7:58pm » |
Quote Modify
|
the anti roll bar link can knock a bit as well
|
|
IP Logged |
|
|
|
ferretmobile
Full Member
2.3 saloon S reg & all the toys. mmmm toys
Posts: 343
|
|
Re: knocking
« Reply #8 on: Jun 28th, 2007, 10:48am » |
Quote Modify
|
Hi guys, strange this should come up at this point in time. I have also got a knocking sound...I put the car on the ramps at college this morning and apart from what has been mentioned here ( I wouldent recognise if it slapped me in the face) I had a goodly look at the exhaust, it being the exhaust it was born with. From what I could see, the exhaust is in fairly good nick, apart from the bit that leads into the cat heatshield doobry. The sleeve of the cat doobry seems almost paper thin and flakey. I am not loosing any power at all so I surmise that the cat itself must be OK.
So, is this sleeve supposed to be like this, and if not can the cat be removed and reused with a new surround or is the whole thing gotta go 
I have an inkling that the answer will be expensive if it is this sleeve is on the way out. If I have to get a new exhaust and a new cat, this will certainly put the tin lid on the car cos I know that the whole package will be over a grand and the memsahib will have a pink fit.
Its been going so well just of late...mostly motorway miles. She has clocked up 112 thou, and leaves most other cars as a dot in the rear view mirror. The 2.3 engine sounds sweet...your thoughts on this rattle would be most welcome gents.
Ferret
|
|
IP Logged |
|
|
|
Spannerdemon
Guest
|
Quote:| If I have to get a new exhaust and a new cat, this will certainly put the tin lid on the car cos I know that the whole package will be over a grand |
|
You'll get it for a LOT less than that. Shame to part with the car just because the exhaust/cat needs replacing. After all, exhausts go on ALL cars.
Shop around. If you buy Genuine Ford, then yes, you'll pay through the nose, but there are plenty of aftermarket, and second hand ones around.
|
|
IP Logged |
|
|
|
ferretmobile
Full Member
2.3 saloon S reg & all the toys. mmmm toys
Posts: 343
|
|
Re: knocking
« Reply #11 on: Jun 28th, 2007, 11:23am » |
Quote Modify
|
Hi SM, no not the flexi pipe, it is beyond that towards the engine. After the flexi pipe the exhaust is sleeved into the cat housing which looks a bit dodgy...
SD, I have had a phone around and cheapest that I could find was £300 from quickfit. I do believe that the 2.3 system is the same as the 2.0 or so I am told. But to be honest, the exhaust is not that bad but I am assuming that if the cat needed to be replaced then the whole system would probably need to be done as well or near as?
Ferret
|
|
IP Logged |
|
|
|
scorpio_man
Administrator
Ford Kuga awd
Posts: 5654
|
|
Re: knocking
« Reply #12 on: Jun 28th, 2007, 11:32am » |
Quote Modify
|
hi there
that must be part of the cat. i've got one in my shed, so i'll take a photo of it later.
btw, my car has been cat-less for about 3 years now and the exhaust is still fine.
hth
|
|
IP Logged |
|
|
|
ferretmobile
Full Member
2.3 saloon S reg & all the toys. mmmm toys
Posts: 343
|
|
Re: knocking
« Reply #13 on: Jun 28th, 2007, 11:35am » |
Quote Modify
|
Can you run the car without the cat and still pass an MOT?
|
|
IP Logged |
|
|
|
pete from Hull
Senior Member
Non Scorpio at the moment, but still interested...
Posts: 1365
|
|
Re: knocking
« Reply #15 on: Jun 28th, 2007, 11:49am » |
Quote Modify
|
Re: The sleeve of the cat doobry seems almost paper thin and flakey. I am not loosing any power at all so I surmise that the cat itself must be OK.
I think that what you describe is the heatshield part of the cat. The actual cat body is made of pretty robust steel, it gets very hot during operation so it has a close fitting shroud round it, usually has some glass fibre padding in it to stop vibrations, it may look like the shrouding is wearing a bit thin, however the cat should still be ok underneath, (although an exhaust shop may tell you different (for the sake of another sale))  if you push some non inflamable material into the shroud part it should tighten it up and stop any rattling....
hth
Pete
|
|
IP Logged |
Bring back fair wages.........
|
|
|
ferretmobile
Full Member
2.3 saloon S reg & all the toys. mmmm toys
Posts: 343
|
|
Re: knocking
« Reply #16 on: Jun 28th, 2007, 11:58am » |
Quote Modify
|
Would a juberlee clip do the trick or has there got to be some movement allowed between pipe and shroud?
BTW, this thread IS getting quite interesting regarding the de-cat idea, the throaty roar without the cat would be nice. Presumably if one was to de-cat for most of the year and re cat for the MOT, a length of pipe would have to be employed to make up the difference between the manifold and the flexi pipe?
|
|
IP Logged |
|
|
|
ferretmobile
Full Member
2.3 saloon S reg & all the toys. mmmm toys
Posts: 343
|
|
Re: knocking
« Reply #17 on: Jun 28th, 2007, 12:02pm » |
Quote Modify
|
SD Ford want over £700 for a complete system and my local National Tyres want over £400. I dont like going to Quick fit, having had some bad experiences there but I would have thought that £300 was fair?
Perhaps not?
|
|
IP Logged |
|
|
|
Highlander
Moderator
Expert
13 Scorpios, XR4x4, Suzuki SJ413 for off road :)
Posts: 8244
|
|
Re: knocking
« Reply #19 on: Jun 28th, 2007, 1:00pm » |
Quote Modify
|
on Jun 28th, 2007, 11:58am, ferretmobile wrote:| a length of pipe would have to be employed to make up the difference between the manifold and the flexi pipe? |
|
Or use an old cat with the internals knocked out of it
What a lot of old scrap you keep Andrew
|
|
IP Logged |
on Oct 17th, 2011, 12:35pm, Simmo wrote:| I give up ! Too much for an old boy! |
|
|
|
|
|
Home
Help
Search
Members
Login
Reply
Send Topic
Print
Remove