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Old 13-12-2018   #1
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Series 4 Turismo banging underneath

Last couple of days my 595 Turismo has started banging about underneath.

It feels like it's on the rear axle but it's hard to tell for sure and seems more prominent when I turn.

Any input on the steering while driving and it's bang bang bang from underneath, it's not just the banging, there's a certain feel to the cars handling as well, like along with the bang bang bang, there's a bump bump bump.

It does do it on the straight as well, if I hit a manhole cover or bump, but it's not all the time.

It's not the exhaust, I checked that and all seems ok and still attached to the mounts at the rear and middle (can't see any at the front yet)

It feels/sounds suspension/wheel/rotational.

Nothing is in the boot either.

I did a quick check of the rear springs and they appear ok too, not really checked the shocks on the rear yet though.

I'm a bit worried, it does feel and sound really bad, not just an annoying knock but a full blown banging.
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Old 13-12-2018   #2
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Quote Originally Posted by Goudrons View Post
Last couple of days my 595 Turismo has started banging about underneath.

It feels like it's on the rear axle but it's hard to tell for sure and seems more prominent when I turn.

Any input on the steering while driving and it's bang bang bang from underneath, it's not just the banging, there's a certain feel to the cars handling as well, like along with the bang bang bang, there's a bump bump bump.

It does do it on the straight as well, if I hit a manhole cover or bump, but it's not all the time.


It feels/sounds suspension/wheel/rotational.

Nothing is in the boot either

I'm a bit worried, it does feel and sound really bad, not just an annoying knock but a full blown banging.
Hi. Does sound a bit odd.

1st.. go round all the wheel bolts with a wheel brace to;

1. Check the bolts are tight

2. See if the wheel..on its hub.. can 'float'in the wheel arch

Itll give an opportunity to rule out loose trim panels rubbibg tyres too.

Maybe find an empty car park.. and do some

FullLock circles.. should be virtually silent.. 1st gear.. clutch out

Then cluth in.. coasting

Worth getting checked sooner..rather than later.


Had any work done lately..??

Charlie
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Last edited by varesecrazy; 13-12-2018 at 08:16.
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Old 13-12-2018   #3
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Re: Series 4 Turismo banging underneath

Thanks for replying.
I have been out and checked the wheel nuts and in doing so think I found the issue.

It was hard to spot in the dark as the tyre profile is so low anyway, but it appears I have a flat or way under inflated tyre on the nearside rear.

I haven't yet seen anything stuck in it, but I am surprised the TPMS didn't alert me??

It must have been like this a least a day and a half and I flick through to the tyre screen on the dash in the mornings and check.

There's nothing on that or the little orange tyre warning light.

When I get a minute, I'll see what the actual pressure is.
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Old 13-12-2018   #4
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Re: Series 4 Turismo banging underneath

Amazing what spending a minute close to
'The mechanicals'can tell you.

Charlie
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Old 13-12-2018   #5
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Re: Series 4 Turismo banging underneath

Well, I had the boy run the pump up to me at work.

Totally flat, not a breath of air in it and no bloody TPMS light??
Also the tyre looked like it was a little soft rather than totally flat, I guess that's what 40 profile look like when they are flat.

Pumped it up and I can hear is hissing away, I can't see/feel anything but there's got to something in it.
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Old 13-12-2018   #6
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Re: Series 4 Turismo banging underneath

Quote Originally Posted by varesecrazy View Post
Amazing what spending a minute close to
'The mechanicals'can tell you.

Charlie
Aye! 'tis an eye opener indeed when you actually take a look at the situation & see whats what....
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Old 13-12-2018   #7
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Re: Series 4 Turismo banging underneath

Right, I have a problem.
I have tyres with such a low profile that they look the same flat as they do fully inflated and a TPMS that doesn't appear to work.


Does anyone know how the TPMS works?
Should there be sensors on the valves inside the tyre?

Had my tyre repaired and there was no sensor on the valve and I'm starting to think because I chose a different wheel as an option, the sensors didn't get fitted with them.


The car's dash just shows all tyres are ok and there was no orange warning light.
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Last edited by Goudrons; 13-12-2018 at 17:50.
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Old 13-12-2018   #8
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Re: Series 4 Turismo banging underneath

If you look at 4th post down it explains how it works

https://www.fiatforum.com/abarth-500...2=#post4362163

Not sure why it didn't work, maybe because it was a slow puncture and not an instant release of air??
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Last edited by Thaidai; 13-12-2018 at 18:37.
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Old 13-12-2018   #9
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Re: Series 4 Turismo banging underneath

Thanks for that.
I suspected it was an indirect system (cheap) and I guess the system couldn't determine the flat due to the large wheel and low profile tyre, I couldn't and I was inches away from it!

After the faff getting it to the tyre shop, I think I'll fork out for a spare.
Perhaps a standard 500/Panda 14" wheel will fit in the well?
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Old 13-12-2018   #10
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Re: Series 4 Turismo banging underneath

FWIW my TPMS picked up on a slow puncture, it alerted me when it got to about half of what it should be.
The system is a bit flaky though, whn I swap between summer 17's and winter 16's it always goes off but usually a day or two after I've done the swap!

Spike
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Old 13-12-2018   #11
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Quote Originally Posted by Goudrons View Post
Thanks for that.
After the faff getting it to the tyre shop, I think I'll fork out for a spare.
Perhaps a standard 500/Panda 14" wheel will fit in the well?
I suspect whatever fits in a 1.2's well is ideal..

Even a 175/65/14 old punto wheel..as they are @10 nowadays
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Old 13-12-2018   #12
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Re: Series 4 Turismo banging underneath

Ive got a normal 14 500 wheel and jack in the boot of my turismo.
It wont fit on the front because of the brakes but will go on the rear.
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Old 13-12-2018   #13
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Quote Originally Posted by simon_16vpunto View Post
Ive got a normal 14 500 wheel and jack in the boot of my turismo.
It wont fit on the front because of the brakes but will go on the rear.
Big brakes eh..

You can put a REAR 17 on the front.. and then mount the steelie at the rear.

Personally I wince when I see 'space savers' on the front of anything..

Charlie
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Last edited by varesecrazy; 13-12-2018 at 20:46.
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Old 13-12-2018   #14
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Re: Series 4 Turismo banging underneath

Quote Originally Posted by Funky Spike View Post
FWIW my TPMS picked up on a slow puncture, it alerted me when it got to about half of what it should be.
The system is a bit flaky though, whn I swap between summer 17's and winter 16's it always goes off but usually a day or two after I've done the swap!

Spike
Mine alerted me a couple of days after having my front tyres replaced...
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Old 14-12-2018   #15
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Re: Series 4 Turismo banging underneath

Quote Originally Posted by varesecrazy View Post
Even a 175/65/14 old punto wheel..as they are @10 nowadays
That's what I was thinking, something like a 14" wheel off the Panda Pop, that's got to be better than a skinny space saver.
I once drove back from Yorkshire, late one Sunday night on one of those and it was awful, the tyre wasn't much better! (sorry, couldn't help it)

I could pull one off our lad's Panda to check it fits the wheel well.

I believe the standard Panda/500 jack fits under the side skirts ok, so I can fit one of those plastic tool holders in the centre rather than have everything rolling around the boot.

The only thing that needs swapping over is the towing eye, the Abarth's is a lot longer than the Panda/500.

I was aware of the brake issue at the front, I'm thinking the standard 14" might actually fit, the Turismo doesn't have the massive Brembo's like the Comp, though they look bigger than a standard 500, but it shouldn't be a hardship swapping a good rear to the front if I'm stranded.


Going back to the flat and the TPMS, spoke with a mate last night and they have a Comp and had exactly the same problem.

Got a rear puncture and no warning, the tyre flapped and banged about yet looked inflated, they actually took it back to the dealers as they were stumped for what was wrong.
The dealer seemed to think that because there's little weight on the rear and the suspension so stiff, the system has trouble picking up a problem and the tyre looked inflated as the other one on the other end of the axle was taking the weight parked up.

They'd already stripped out the back seats, so ended up strapping a full size wheel in a fancy leather Abarth cover in the back.
Not ideal for me, my windows will be smashed and the wheel gone in minutes around here!
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Last edited by Goudrons; 14-12-2018 at 07:11.
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