p1 rear knocking graunching noise.
05 January 2007, 03:44 AM
#1
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p1 rear knocking graunching noise.
Hi guys first post on here, just got a p1 my third impreza after a bugeye wrxppp, and a bugeye sti. ive had it 4 days and have broke it already!!!
the problem is that at very low speed ie 10 mph or less, there is a terrible graunching knocking noise from the drivers side rear. ive had a quick look about and everything visable seems fine and doesnt apear to be wheel bearings.
the noise is worse when slowing down and when first pulling away. at first the noise happened only when hitting bumps but now its pretty much constant. the noise totally disapears at anything above 20mph and doesnt effect handling, braking or acceleration.
the diff casing is very warm too is that normal??
as the wheels turn at slow speed its almost like a brake with a warped disk catching but the brakes are fine.
ive had the knocking noise on cars before when suspension bushes have gone but never the feeling like the brake being on or the graunching noise that comes at low speed.
any ideas guys as im a bit gutted at the mo!!!!!!!!
tried it again tonight, its definatly getting worse too. its in time with the wheels turning at low speeds, does it in both forwar and reverse, sounds and feels just like a brake sticking but there not.
help!!!!!!!!
the problem is that at very low speed ie 10 mph or less, there is a terrible graunching knocking noise from the drivers side rear. ive had a quick look about and everything visable seems fine and doesnt apear to be wheel bearings.
the noise is worse when slowing down and when first pulling away. at first the noise happened only when hitting bumps but now its pretty much constant. the noise totally disapears at anything above 20mph and doesnt effect handling, braking or acceleration.
the diff casing is very warm too is that normal??
as the wheels turn at slow speed its almost like a brake with a warped disk catching but the brakes are fine.
ive had the knocking noise on cars before when suspension bushes have gone but never the feeling like the brake being on or the graunching noise that comes at low speed.
any ideas guys as im a bit gutted at the mo!!!!!!!!
tried it again tonight, its definatly getting worse too. its in time with the wheels turning at low speeds, does it in both forwar and reverse, sounds and feels just like a brake sticking but there not.
help!!!!!!!!
Last edited by navydoubs1977; 05 January 2007 at 03:55 AM.
05 January 2007, 08:39 AM
#2
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Hi
could possably be the handbrake shoes,They may need adjusting and or the discs takeing off to inspect if the lineing has come off.You may find that if you adjust the hand brake shoe to discs clearance ,The noise may go away.
could possably be the handbrake shoes,They may need adjusting and or the discs takeing off to inspect if the lineing has come off.You may find that if you adjust the hand brake shoe to discs clearance ,The noise may go away.
05 January 2007, 03:59 PM
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quick update, apparently ite the shock mount i find this hard to belive though as it feels like a brake sticking. sparchatts and the garage i got it from both say osr suspension strut mount. does anyone have an idea about poss brake problem as well. rear disks have plenty of rust on not sure there working properly??
05 January 2007, 04:00 PM
#5
A continual noise or an occasional one off graunching noise?
Sometimes the P1/STiV dampers can exhibit stiction during low speed manoeuvring, but that feels more like something sticking, then releasing - as if a brake pad has stuck to the disk and then quickly freed itself. Replacement of the dampers and, to be certain, the mounts would fix the latter.
Beat me to it. I don' think that it's the brake as i tried that route when i had this issue on my P1 and it made no difference. Mike Wood of prodrive (daddy of P1!) said that dampers decline rapidly after about 30k miles anyway so if you have the cash, it might be worth doing the lot.
Sometimes the P1/STiV dampers can exhibit stiction during low speed manoeuvring, but that feels more like something sticking, then releasing - as if a brake pad has stuck to the disk and then quickly freed itself. Replacement of the dampers and, to be certain, the mounts would fix the latter.
Beat me to it. I don' think that it's the brake as i tried that route when i had this issue on my P1 and it made no difference. Mike Wood of prodrive (daddy of P1!) said that dampers decline rapidly after about 30k miles anyway so if you have the cash, it might be worth doing the lot.
Last edited by Fat Boy; 05 January 2007 at 04:03 PM.
05 January 2007, 04:04 PM
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thats exactly what it feels like. as if brake sticks then comes off. the mounts are being replaced on tue is it fine to drive it till then??
the prob is only at low speed above 15 mph no noise at all. when stopping and pulling away theres a clunk like a brake pad releasing. is that the right kind of noise
the prob is only at low speed above 15 mph no noise at all. when stopping and pulling away theres a clunk like a brake pad releasing. is that the right kind of noise
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10 January 2007, 09:44 PM
#10
Not a safety issue really so I would assume that it's not on the MOT list.
As Mike Wood of Prodrive responded to the orginal poster elsewhere (https://www.scoobynet.com/suspension...on-fit-p1.html) , some of the original dampers have a tendency for the bearings to go oval so giving some slop in the damper action. This can lead to a sticking sensation (stiction) at low speeds where the forces are comparatively low. Higher speed / forces will overcome the friction so you don't notice it at higher speeds. Ultimately it can lead to rattling /clonking, but still probably not a real safety issue just it's noisy and wont handle as well side to side (My P1 would definitely let go quicker at the back on left handers (on track)rather than right handers and it was my back driver's side strut that was sticky).
As Mike Wood of Prodrive responded to the orginal poster elsewhere (https://www.scoobynet.com/suspension...on-fit-p1.html) , some of the original dampers have a tendency for the bearings to go oval so giving some slop in the damper action. This can lead to a sticking sensation (stiction) at low speeds where the forces are comparatively low. Higher speed / forces will overcome the friction so you don't notice it at higher speeds. Ultimately it can lead to rattling /clonking, but still probably not a real safety issue just it's noisy and wont handle as well side to side (My P1 would definitely let go quicker at the back on left handers (on track)rather than right handers and it was my back driver's side strut that was sticky).
Last edited by Fat Boy; 10 January 2007 at 09:48 PM.
14 January 2007, 02:36 PM
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hi guys yes def sounds a prob with p1s does anyone fancy a bulk purchase on something that will cure it. mines in being sorted as we speak but the garage is pretty useless so not expecting much from them does anyone have a good alternative to the p1 dampers for these either subarus or an aftermarket kit.
14 January 2007, 02:39 PM
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fat boy
yeah it went through the mot with no probs so cant be much of a safety issue. there seems to be a few with this prob, your car doesnt have the p12fat number plate does it???
yeah it went through the mot with no probs so cant be much of a safety issue. there seems to be a few with this prob, your car doesnt have the p12fat number plate does it???
14 January 2007, 10:29 PM
#15
I was looking at low mileage second hand P1 suspension but £500 seems a bit of a gamble considering..
I noticed new P1 springs were quite reasonable at the main dealers ( dampers ouch!) but not sure what dampers to fit with them on my 99 uk classic.
14 January 2007, 10:45 PM
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maps
the problem isnt just a noise its like the rear wheel sticks on there seems to be loads of possible explanations but the ovaled dampers sounds about right mine is in being done now when it returns il let you all know
dave
the problem isnt just a noise its like the rear wheel sticks on there seems to be loads of possible explanations but the ovaled dampers sounds about right mine is in being done now when it returns il let you all know
dave
15 January 2007, 09:54 AM
#19
15 January 2007, 09:55 AM
#20
15 January 2007, 09:58 AM
#21
STi5/6 type R dampers and P1 dampers are interchangeable, it's just the eibach springs that are P1 specific. So if you can get a good cheap set of the STi dampers then just swap the springs over.
15 January 2007, 01:13 PM
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Originally Posted by MikeWood
Not quite correct, P1 dampers are the same as a Type R but different to the normal (ie 4 door) STi. Best check the part numbers as they are on the damper body, the last 3 digits are the important ones.
Mike
Not quite correct, P1 dampers are the same as a Type R but different to the normal (ie 4 door) STi. Best check the part numbers as they are on the damper body, the last 3 digits are the important ones.
Mike
Last edited by navydoubs1977; 15 January 2007 at 01:16 PM.
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