Re Croma 1.9 prestigio 150bhp

Hello everyone
I need some help I think
My car is a making a funny noise

It has done 45,000 and is 5 years old

I have FSH
No belts have been changed
the EGR has

The problem is a 'booming' sort of noise comes and goes
worse between 40-60 mph

Car does not seem to be giving good acceleration
and only 35-40 mpg

Can anyone tell me how to diagnose a problem with the turbo

thanks
amanda

Re: Ms

Amanda, try a search for "jtd turbo hose split" to start with. You could also try www.alfaowner.com, you will find hundreds of them.
Glad you found us.

Re: Ms

:yeahthat:

Re: Booming Noise- Turbo problem?

Thanks for info and welcome
The noise is very hard to describe
but is intermittent
is it better to take car to fiat garage
or could a general mechanic diagnose and repair it

what kind of noise should I expect with a split hose?
It is not a whooshing noise
and there is no smoke


thanks
Amanda

Re: Ms

It wouldn't have to be a Fiat garage, any competent mechanic should be able to diagnose it if it is a split hose. The noise will depend on what the problem is so I can't say for definite what it should be - sorry.

Re: Ms

Should there be any smoke?

Re: Ms

thanks for the quick reply
Presently trying to determine what might be causing the strange noise so that I can speak confidently to the garage

Sorry to start with the basics, but you haven't said whether it's an engine noise. Is it something that only occurs when accelerating? Does not accelerating and/or dipping the clutch make it go away when it happens?

I note you say it's speed related, rather than revs related. This points towards anything other than the engine. Unless it's just that you've only noticed it at speed.

35-40 mpg is probably reasonable for shortish journeys. I get about 42-45 mpg (my record is 52 for a long motorway journey), but as soon as the other half drives it the average always goes down to about 35. She doesn't do engine braking, anticipating corners etc.

abininie said:

Re Croma 1.9 prestigio 150bhp

Hello everyone
I need some help I think ...

Click to expand...

The general advice is to disregard the belt change interval given in FIAT service books - & do a belt & water-pump change at 50K mls or 4yo. (Did mine at 54K mls - & 3m short of 5yo).

I’d argue 35-40 av.mpg is reasonable. My av.mpg (1.9/16v 150) is 42 mpg over the past 12m. Personal best is 46 mpg, but only during early ownership - & before I got diagnosed with EGR twitch. In Dec snow & ice, with outside temp being –5C (or less) I’ve not managed 40 mpg. Today (Wed) I’m showing 35 mpg – that’s after 2x 30ml round trips (with queuing) to the sales Mon & Tue, & a tootle into town today to PO & bank.

I’ve no idea what your `booming’ is. Do you feel the turbo kick-in?

I get a `vacuum cleaner’ whine when taxying out for take-off, but it desists after a min or two … what is that?

---------
55 Prestigio 1.9/16v 150 (58K mls)

Caravadossi said:

I get a `vacuum cleaner’ whine when taxying out for take-off, but it desists after a min or two … what is that?

Click to expand...

Most likely an aux belt tensioner getting old (if so it will probably get better as the weather gets warmer) or alternator bearings with a little play.

If a turbo hose splits you won't get smoke - the turbo pressure hoses are before the exhaust. Alternatively, it could be as simple as an exhaust heat shield touching the exhaust or an exhaust mounting broken, allowing the exhaust to touch the bodywork.

Does the noise come from the front or back of the car?

I suggested the turbo hoses because this is quite common on the JTD, and a fairly cheap fix. Any repair garage experienced in Vauxhall should be familiar with the problem. Many modern Vauxhall diesels use the Fiat 1910. Possibly a good place to start.

Thank you for all your comments
I have had the car checked by bosch management garage
tested the turbo
no loss of pressure
hoses and turbo seem fine
no ecu codes except passenger wing mirror not demisting

the problem is intermittent as I have said
even when stationary
the noise is loud enough to drown out radio
I have described noise as booming
but better to say what it is not:
it is not a screech
or a cranking sound
or tyre or wheel bearing noise

I have manage to get the noise to go by taking foot of the accelerator slightly when on the move and generate the noise by putting foot down on accelerator quite hard

When stationary by turning the ignition on and off makes the noise disappear

One thing that has been mentioned is that I may have the wrong oil (it was given an oil and filter change shortly before I bought the car)
If the oil breaks down? Then it might affect turbo performance
But I am told the turbo works okay

Interesting that it might be a vibration but I would have thought the noise would have been constant and the noise comes from the front of the car.

If it was the alternator -what noise should I expect

Amanda

If it was the alternator then it would vary only according to the engine speed, regardless of whether you are accelerating. So that's ruled out.

The exhaust could be a factor. Perhaps not a hole, but internal damage.

It probably needs to be run on a ramp with someone with a stethoscope prodding round it.

thanks for info
re last post
what could go on exhaust?
Amanda

It was a "could be" rather than a "will be". There are baffles and stuff inside the exhaust. My point is that there could be damage even if none is apparent.

But it's obviously coming from something that only gets used when accelerating. So fuel in, air in or exhaust out. The noisy end is the exhaust. That's my thinking anyway.

Or it could just be something vibrating in sympathy with the engine.

Sounds like a job for a garage diagnosis though. Let us know how you go on.

The saga continues
I was asked by garage to replicate problem
because they could not find one
I sat in the stationary vehicle this morning
putting foot on accelerator peddle and lifting it off again revving the engine

the noise then became apparent as before
sitting behind the steering wheel was more pronounced than listening under the bonnet

the mechanic found a significant vibration along one of the fuel pipes
which is baffling as the car runs smoothly and starts normally etc

as I type the fuel pump/injection system is being tested

oh as I said earlier the element in wing mirror needs replacing
can anyone help with that?

Wishing all those who found time to help with suggestions for my car
and to have shown an interest
a happy new year and trouble free motoring to boot

Amanda

Element in the wing mirror? Heating element or...?

The glass is replaceable but it's difficult to get the old one out without breaking it. I broke my driver's side one a while back and discovered that the glass part isn't listed on my version of ePer but it is listed in the latest one. From memory it was less than £20 for the glass, and when you get the new one you can see how it fits on so can work out how to get the old one off. There is a spade connector on the rear (front if you're being pedantic ) of the glass for the heating element.

£20? The heated mirror glass was over £60 last time I looked.

Bunny's drivers side detached from its plastic holder and was dangling by the heater wires Attached it back to the plastic with some double sided adhesive strips (not double sided tape) then popped it back into the mirror housing.

No call from the garage still stumped it seems

I have now spent the best part of 2 hours
looking through previous threads
I wonder whether it might be DPF regeneration
I purchased the car knowing there had been an oil and filter change
but not by a FIAT dealer

as for poor acceleration (a new thread I think)
I shall try 'fly by wire throttle on multiplug' plug on top of throttle
'accelerator peddle potentiometer'
'excessive egr' although I have a new one fitted-loss of efficiency leading to vibration
replace 'air filter'
'clutch pedal switch' open
As for wing mirror I will get wiring checked first but it might prove expensive to correct
definitely going to invest in code reading/reset tool if someone can point me in the right direction I would be grateful
Now going to celebrate new year!!!
Thanks all
Amanda