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Noise from Mondeo Mk3 Rear Suspension


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#1 OFFLINE   dazedconfused

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Posted 14 September 2008 - 05:45 PM

For months now I've had a strange noise coming from the rear of my car (2005 Mondeo) when going over rough ground or speed bumps etc. It soulds like a rattle when moving fast over roug ground, but when going slowly for seed bumps etc the noise is more like a "squelch" and appears to be coming from the nearside shock absorber area.

So far I've changed the drop links and the nearside shock top mount, but I'm thinking it may be time for new rear shocks, yet I'm reluctant to throw money at it until I know for definite what it is. I'm also sick of garages automatically assuming that because it's a noise from the rear of a Mk3 mondeo that it's the subframe bushes, as I've had the bolts out and they look solid as a rock, which I'd expect on a 2005 car.

My opinion is that the noise seems to be coming from the top of the nearside shock, and is possobly something to do with the rubber bump stop (as I've changed the mount)? I've sprayed white grease up in round there and it's stopped for a few days.

I'm stumped, and nobody on MEG knows what it could be either.

Help?

#2 OFFLINE   Tony

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Posted 14 September 2008 - 06:11 PM

The damper valve's "gone/worn" or whatever.... no bushings "squelch".... Have you checked the dampers rebound?

#3 OFFLINE   dazedconfused

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Posted 14 September 2008 - 07:17 PM

Thanks for reply Tony, so does that mean new shocks?

If yes, I have another scenario. My Mondeo's a Zetec, which means it originally had 16" alloys (with 205/55 rubber) and slightly stiffer "sports" suspension (which I assume, means slightly stiffer shocks?). However, I have now upgraded to 18" wheels from a Titanium-X so when replacing the shocks, would I be better getting the ones from a Titanium-X rather than the ones originally for my car? I understand Ford fit different shocks depending on the wheel size.

#4 OFFLINE   Tony

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Posted 14 September 2008 - 07:28 PM

Titanium-X shocks would be wise in view of the package you have.... Personally i would love to check the rebound on your car and give you a more definitive answer... are you anywhere near wim?

#5 OFFLINE   dazedconfused

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Posted 14 September 2008 - 07:59 PM

couldn't really be further I'm afraid mate, I'm in Newcastle upon Tyne ;)

Due to your reputation, I am seriously considering making a trip down to see you guys though, reckon it would be worth it! Unless, that is, you know anybody up North who does a similarly good job?

As for rebound, it doesn't seem to bounce excessivly when either rear corner's pushed down, no. However, the car has 102k on the clock, mainly motorway but I'm sure it would benefit from new shocks anyway. It's recently had new Eibach springs fitted, but the noise didn't change and the old springs seemed to be in good nick.

I take it I'd be better fitting the new shocks etc (and I want to replace the other front wishbone, as I only replaced one) THEN getting a full geo done? I'm not getting any excessive tyre wear that I've noticed, which I'm told is strange for a Mondy on 18's!

#6 OFFLINE   Tony

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Posted 14 September 2008 - 08:03 PM

Aha.... why did you need to replace the coils?

#7 OFFLINE   dazedconfused

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Posted 14 September 2008 - 09:08 PM

To make it less like a 4x4 (can't understand why Mondeo's seem to sit so much higher than most other cars). Replaced standard springs with Eibach -30mm ones from Ford. Ford dealer said it'd be ok on standard shocks when only lowering by that amount.

Went from this:

Posted Image

to this:

Posted Image

So doesn't even look that low.

#8 OFFLINE   CIH

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Posted 15 September 2008 - 11:08 AM

a little tail-high isn't it (before and after) ?

#9 OFFLINE   dazedconfused

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Posted 15 September 2008 - 11:40 AM

yes, but I think they're all like that mate.

#10 OFFLINE   dazedconfused

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Posted 15 September 2008 - 02:47 PM

so, can I just confirm, that it looks like it needs new shocks?

I'll probably replace the other top mount, the gaitors and bumps stops, just so I know everything is "new".

#11 OFFLINE   Tony

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Posted 15 September 2008 - 06:13 PM

so, can I just confirm, that it looks like it needs new shocks?

I'll probably replace the other top mount, the gaitors and bumps stops, just so I know everything is "new".


Have them tested first..... It should be easy to identify on a ramp.

Once confirmed replace the dampers with units suitable to reply to the upgraded coils ie: sports dampers.

#12 OFFLINE   dazedconfused

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Posted 16 September 2008 - 11:26 AM

ok, will get it checked asap.

As for sports dampers, how do you rate the Koni Sports Yellow units (priced at about £115 each!)? Or what would you recommend?

I know it wouldn't be totally perfect, but do you think I'd be able to upgrade to Koni's on the rear this month, and wait a month or two before doing the fronts? If the Koni's were adjusted to the softest setting, would they be that drastically different to the standard Zetec shocks (which are apparently a bit stiffer than normal anyway)?

Do you think the handling would be ruined or badly affected by doing this? Just I've just bought a house and don't have a spare £500 for a full set just yet!

Otherwise, I've heard good things about Monroe Reflex shocks, but are they more like standard shocks than uprated sports ones?

Cheers for all the help so far!

#13 OFFLINE   Tony

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Posted 16 September 2008 - 12:06 PM

If the Koni Sports are damper adjustable then you can tune the dampening to the coils and to some extent the front ratio.

I would steer clear of the Monroe dampers....

#14 OFFLINE   dazedconfused

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Posted 16 September 2008 - 02:13 PM

ok, (pending inspection) I think the plan of action will be:

1. Fit Koni Adjustable Shocks (sports Yellow) to rear of car.

2. Get a full Geometry done.

3. Next month (or possibly the one after) fit matching Koni adjustable shocks (sports Yellow) to front.

Sound ok?

#15 ONLINE   Rich

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Posted 16 September 2008 - 04:13 PM

Eibach make their springs so they're compatiable with standard shocks so I thought it would be ok to use these? I used oem shocks when I fitted me eibach springs.

You not thought about getting eibach shocks? One thing with koni is they dont like the camber kits if you ever have to fit one. The tops of the shock (thread part) snaps off!

#16 OFFLINE   Tony

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Posted 16 September 2008 - 06:27 PM

ER has a point, evermore so since your car is lowered and may need a front camber kit?

#17 OFFLINE   dazedconfused

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Posted 16 September 2008 - 07:44 PM

Hmmm, more options! lol

The Koni's don't like camber kits? I'm only lowered 30mm though, so camber shouldn't be too much of a problem should it? Eibach don't seem to make shocks for the Mk3 Mondeo, or at least I can't find em anyway.

So ya reckon standard Titanium-X shocks (for 18" wheels) would be the best option? Or, would the Monroe's be better than the Sachs (Ford) ones? Both are about same price, but Monroe's have 3yr warranty.

#18 OFFLINE   Tony

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Posted 16 September 2008 - 08:23 PM

Hmmm, more options! lol

The Koni's don't like camber kits? I'm only lowered 30mm though, so camber shouldn't be too much of a problem should it? Eibach don't seem to make shocks for the Mk3 Mondeo, or at least I can't find em anyway.

So ya reckon standard Titanium-X shocks (for 18" wheels) would be the best option? Or, would the Monroe's be better than the Sachs (Ford) ones? Both are about same price, but Monroe's have 3yr warranty.


Monroe's are pants believe me..... Titanium-X shocks are the best bet, i would love adjustable top mounts but this isn't going to happen and i can compensate for the camber via the toe but it's more problematic.

Titanium-X shocks ;)

#19 OFFLINE   dazedconfused

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Posted 16 September 2008 - 08:25 PM

Excellent, cheers mate! They're only £50 each too, so not too bad!

#20 ONLINE   Rich

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Posted 17 September 2008 - 07:04 PM

I thought lowering mine 30mm wouldn't affect the camber and from the geo report it hadn't, but once they had settled I had wear on one tyre, hence the reason I got the camber kit.

As koni's are adjustable they're hollow and the kit puts more stress on them compared to standard top mounts.

Eibach do the springs on their own and a complete kit. I'm not 100% sure if they sell just the shocks though. Might say on their site.