Fiesta ST weird engine noise. Any Ideas?
Discussion
Hi all,
Hoping someone can help with this issue I've got with my Fiesta ST180 (mk7).
I've had the car for just under a year now and recently it has started making this really weird noise coming from somewhere in the engine.
Before anyone says anything, it wasn't doing it before and I just didn't notice. It really has just started doing this a few weeks ago.
I've taken it to two Ford garages and both are stumped.
First garage thought it could be a bearing but didn't really seem interested in getting it in for inspection. They just carried out a service and MOT which it was also booked in for. No advisories.
Second garage had it for 45 minutes with me waiting outside. Could hear them revving it in workshop and they could hear it and the noise got louder the louder they revved it.
They came out and said it was likely the turbo and quoted £1500 for a new one. I thought "whatever, at least it will get sorted".
Got it booked in and got a call saying they now don't think it is the turbo and think it's an o2 sensor causing problems with the catalytic converter.
Got the new one fitted and no difference so they put old one back on. They then call to say they don't know what it is and said they would call me to bring it back when they have another ST in to compare them.
Here's a link to the video on YouTube. Use earphones.
https://youtube.com/shorts/OPxkXOchzG8
Can someone please help?
Thanks
Hoping someone can help with this issue I've got with my Fiesta ST180 (mk7).
I've had the car for just under a year now and recently it has started making this really weird noise coming from somewhere in the engine.
Before anyone says anything, it wasn't doing it before and I just didn't notice. It really has just started doing this a few weeks ago.
I've taken it to two Ford garages and both are stumped.
First garage thought it could be a bearing but didn't really seem interested in getting it in for inspection. They just carried out a service and MOT which it was also booked in for. No advisories.
Second garage had it for 45 minutes with me waiting outside. Could hear them revving it in workshop and they could hear it and the noise got louder the louder they revved it.
They came out and said it was likely the turbo and quoted £1500 for a new one. I thought "whatever, at least it will get sorted".
Got it booked in and got a call saying they now don't think it is the turbo and think it's an o2 sensor causing problems with the catalytic converter.
Got the new one fitted and no difference so they put old one back on. They then call to say they don't know what it is and said they would call me to bring it back when they have another ST in to compare them.
Here's a link to the video on YouTube. Use earphones.
https://youtube.com/shorts/OPxkXOchzG8
Can someone please help?
Thanks
Edited by Mike_2193 on Saturday 6th March 20:50
It's an unusual noise, more akin to air moving. .
Whoever suggested an o2 sensor needs a good slap as that's just nonsense.
I'd start by removing parts of the air intake pre-turbo to see if anything can be heard or if it changes.. And/or smoke test the system for any odd loeaks.
And does it sound the same or different when driving ? Does it drive as normal ?
Whoever suggested an o2 sensor needs a good slap as that's just nonsense.
I'd start by removing parts of the air intake pre-turbo to see if anything can be heard or if it changes.. And/or smoke test the system for any odd loeaks.
And does it sound the same or different when driving ? Does it drive as normal ?
Stuck diverter valve?
If it's seized shut, it can't vent boost pressure and pushes it back into turbo, hence flutter. When working, you should hear the standard "blow off" hiss.
Stock part is a plastic piston lubricated by oil vapour in the system. Common to seize after periods of no use.
Common upgrade is a GFB DV+ which uses a brass piston... but just as prone to seize open or close.
Would be my guess.
If it's seized shut, it can't vent boost pressure and pushes it back into turbo, hence flutter. When working, you should hear the standard "blow off" hiss.
Stock part is a plastic piston lubricated by oil vapour in the system. Common to seize after periods of no use.
Common upgrade is a GFB DV+ which uses a brass piston... but just as prone to seize open or close.
Would be my guess.
stevieturbo said:
It's an unusual noise, more akin to air moving. .
Whoever suggested an o2 sensor needs a good slap as that's just nonsense.
I'd start by removing parts of the air intake pre-turbo to see if anything can be heard or if it changes.. And/or smoke test the system for any odd loeaks.
And does it sound the same or different when driving ? Does it drive as normal ?
Hi, yeah drives fine. Gave it a good blast on dual carriageway yesterday other day and not noticed any difference.Whoever suggested an o2 sensor needs a good slap as that's just nonsense.
I'd start by removing parts of the air intake pre-turbo to see if anything can be heard or if it changes.. And/or smoke test the system for any odd loeaks.
And does it sound the same or different when driving ? Does it drive as normal ?
Same noise when driving as it is when stationary.
alex98uk said:
Stuck diverter valve?
If it's seized shut, it can't vent boost pressure and pushes it back into turbo, hence flutter. When working, you should hear the standard "blow off" hiss.
Stock part is a plastic piston lubricated by oil vapour in the system. Common to seize after periods of no use.
Common upgrade is a GFB DV+ which uses a brass piston... but just as prone to seize open or close.
Would be my guess.
Hi, I'm sorry but I'm going to show my ignorance here. Not being mechanically minded, I'm relying on what garages have been telling me.If it's seized shut, it can't vent boost pressure and pushes it back into turbo, hence flutter. When working, you should hear the standard "blow off" hiss.
Stock part is a plastic piston lubricated by oil vapour in the system. Common to seize after periods of no use.
Common upgrade is a GFB DV+ which uses a brass piston... but just as prone to seize open or close.
Would be my guess.
This is the first turbo I've driven so not sure of how it all works. I was assuming that the garage would have checked what you've suggested.
I still get the turbo hiss noise when driving and changing gear.
It may be that it's just sticking at low revs/idle due to low pressure not forcing piston open. Obviously the piston is designed to open with a certain amount of pressure... but if it's sticky, perhaps it can open at full pelt, but not with low psi.
I would just ask them to take it out, relube it and stick it back in... see if it helps. It's literally 3 bolts holding it in
If it's not that, can tick it off the list. As you say, I suspect they would have checked it.
I would just ask them to take it out, relube it and stick it back in... see if it helps. It's literally 3 bolts holding it in
If it's not that, can tick it off the list. As you say, I suspect they would have checked it.
Edited by alex98uk on Saturday 6th March 22:06
alex98uk said:
It may be that it's just sticking at low revs/idle due to low pressure not forcing piston open. Obviously the piston is designed to open with a certain amount of pressure... but if it's sticky, perhaps it can open at full pelt, but not with load psi.
I would just ask them to take it out, relube it and stick it back in... see if it helps. It's literally 3 bolts holding it in
If it's not that, can tick it off the list. As you say, I suspect they would have checked it.
Sorry to ask, I assume you mean a piston in gbe turbo?I would just ask them to take it out, relube it and stick it back in... see if it helps. It's literally 3 bolts holding it in
If it's not that, can tick it off the list. As you say, I suspect they would have checked it.
Mike_2193 said:
Sorry to ask, I assume you mean a piston in gbe turbo?
It's part of the greater turbo system, but not a part of the turbo per se (like the actuator is). It's an individual element that can be removed without touching the turbo.This is an install video for the upgraded part, but it shows you what it is and where it's located in the ST:
https://www.youtube.com/watch?v=kjEOEHYDTB4
As I say, it's just a hunch of mine.
alex98uk said:
It's part of the greater turbo system, but not a part of the turbo per se (like the actuator is). It's an individual element that can be removed without touching the turbo.
This is an install video for the upgraded part, but it shows you what it is and where it's located in the ST:
https://www.youtube.com/watch?v=kjEOEHYDTB4
As I say, it's just a hunch of mine.
They did actually say that the actuatorwasn't moving on the turbo when they first had it which made them say the turbo needed replacing. But when they got it in for the week to do the work they said it was fine.This is an install video for the upgraded part, but it shows you what it is and where it's located in the ST:
https://www.youtube.com/watch?v=kjEOEHYDTB4
As I say, it's just a hunch of mine.
Mike_2193 said:
They did actually say that the actuatorwasn't moving on the turbo when they first had it which made them say the turbo needed replacing. But when they got it in for the week to do the work they said it was fine.
Unless they're forcing it's operation manually....it certainly wont be moving sitting revving the engine. How did they test it ?And the actuator is separate from the turbo...it does not mean the turbo needs replacing.
stevieturbo said:
Unless they're forcing it's operation manually....it certainly wont be moving sitting revving the engine. How did they test it ?
And the actuator is separate from the turbo...it does not mean the turbo needs replacing.
I don't know how they tested it. They had it in the workshop for about 45 minutes when I first took it to the second garage for them to look at. And the actuator is separate from the turbo...it does not mean the turbo needs replacing.
I was stood outside in the carpark and could hear them revving the engine over and over. I wasn't allowed inside reception due to Covid restrictions so couldn't see exactly what they were doing.
As I say I'm not mechanically minded so I'm sorry to show my ignorance but a lot of this goes over my head.
I really don't know what to do or who to take it to as you think Ford garages would be able to figure it out, tell me what they need to do and just fix it.
I haven't even been charged. You'd think they'd be happy to take my money for the work.
What do you think I should do?
Mike_2193 said:
As I say I'm not mechanically minded so I'm sorry to show my ignorance but a lot of this goes over my head.
I really don't know what to do or who to take it to as you think Ford garages would be able to figure it out, tell me what they need to do and just fix it.
I haven't even been charged. You'd think they'd be happy to take my money for the work.
What do you think I should do?
Problem is....far too many mechanics are not mechanically minded either, and I really wouldn't have high hopes for Ford finding the problem, especially one that suggests it's an o2 sensor.I really don't know what to do or who to take it to as you think Ford garages would be able to figure it out, tell me what they need to do and just fix it.
I haven't even been charged. You'd think they'd be happy to take my money for the work.
What do you think I should do?
Sadly...what to do. Find a competent mechanic, or a specialist who work with that vehicle more often. There will be various Ford/ST tuners around the country, or if you state where you are, someone here might know a competent mechanic who could look at it.
stevieturbo said:
Problem is....far too many mechanics are not mechanically minded either, and I really wouldn't have high hopes for Ford finding the problem, especially one that suggests it's an o2 sensor.
Sadly...what to do. Find a competent mechanic, or a specialist who work with that vehicle more often. There will be various Ford/ST tuners around the country, or if you state where you are, someone here might know a competent mechanic who could look at it.
I'm in Torbay if that helps.Sadly...what to do. Find a competent mechanic, or a specialist who work with that vehicle more often. There will be various Ford/ST tuners around the country, or if you state where you are, someone here might know a competent mechanic who could look at it.
stevieturbo said:
maybe try
https://www.autodynamix.co.uk/contact-us/
https://www.autodynamix.co.uk/auto-dynamix-garage-...
https://www.enginetuner.co.uk/contact
https://www.devildevelopments.co.uk/contact/
Thanks matehttps://www.autodynamix.co.uk/contact-us/
https://www.autodynamix.co.uk/auto-dynamix-garage-...
https://www.enginetuner.co.uk/contact
https://www.devildevelopments.co.uk/contact/
I'll probably try the first one you linked. They're pretty close to me.
Would you agree that it isn't a normal noise? Had a couple of people say it's normal turbo flutter. Really doesn't sound like turbo flutter to me.
Mike_2193 said:
I'm in Torbay if that helps.
I use these guys, about an hour up the road from youhttp://www.tarnockgarage.co.uk/
They are a Ford service partner, but specialise in modified Ford's.
Would recommend
alex98uk said:
I use these guys, about an hour up the road from you
http://www.tarnockgarage.co.uk/
They are a Ford service partner, but specialise in modified Ford's.
Would recommend
Thanks for the tip. Not sure if I could work that out though as it's in Somerset. Will definitely put them on the list thoughhttp://www.tarnockgarage.co.uk/
They are a Ford service partner, but specialise in modified Ford's.
Would recommend
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