My model of MX-5 is: __ND1 RF 2017 2 Litre Automatic
I’m based near: __South Yorkshire
I’m looking for technical help or recommendations on: __
Hi,
I posted something similar to this on miata.net and the issue does not seem to be well known about.
Basically after 15 minutes or so when the car has warmed up there is a loud-ish whine coming from the vehicle. It sounds like a strained cat and slightly sick. I can hear it outside too. So initially my thinking was it was transmission related or/and rear differential related. However I then put the car into neutral and revved the engine and the noise was still being made. The noise is rev related. Not rolling related it seems.
Anyone have any idea what this is? I had the car inspected twice at a official UK Mazda dealer and nothing was found. Also at another location (a reputable tuning shop). Again nothing was found.
I am going to also post a link to a video that has a sound that is very similar. Different car but nearly exactly the same noise. I tried making some of my car but the sound on my mobile phone does not really pick-up well enough.
Hmm, an off the wall thought, probably no help at all, but that noise reminds me of something from the distant past…
Have you checked fluid levels at their respective check temperatures, both engine oil and Autobox? Not too full or too low?
I also use a stethoscope for listening to odd noises from moving parts.
I always make sure I have someone with me, just in case I slip and it gets too close to a moving part!
I’ve also adjusted the shape and springiness, and put some old spare ear-bud grommets on the ear-ends for a gentler and more comfortable fit.
Kind of noise I’d expect from a supercharger, but if you do not have one of those I’d suspect a noisey power steering pump but I believe you do not have one of those either, so could be alternator or water pump. Finally, you’d really need to put it on a ramp to see if it is coming from the fluid clutch in the transmission.
Take the dipstick out, put one end against your ear (the non oily end is best!) and the other against parts of the engine, it will amplify any noise, I would start with the alternator….
It could just be a tight belt.
Lots of replies which I did not expect, so thanks.
OK so engine oil and transmission oils have recently been replaced by official Mazda dealer. I don’t expect they have been underfilled or overfilled. The engine oil I checked and the level seemed fine. Also the rear differential oil was changed, again by an official Mazda dealer, although a different one. The noise was present when I purchased the car but I think it has gotten worse.
Also it is important to state that my vehicle is an automatic. I don’t know whether this changes things?
And yes I tried with the air-conditioning off, and the noise was still there.
What is interesting I find is it only happens after driving the car for a while and things warm up. Also I noted on one drive a couple of weeks ago the noise was not present to a large degree. The first time this has happened in a while. And yet when I stopped the car and started it again after resting for about 30 minutes the noise was back immediately. Which I found odd. Why would the noise come back when just prior the car was hotter when driven and the noise was not present?
I wonder if this is related to start procedure and something not starting off in the correct mode/order if that makes sense.
Again worth adding when shifting into neutral (and I assume disengaging the transmission and rear differential), revving the car induces the noise again. Indeed it sounds like a supercharger.
Because he said he can’t manage to record it himself on his phone despite trying, and the Porsche video sound pretty much exactly like the noise his is making. Sounds fair enough, until he can get a better recoding/diagnosis. What else could he do, whislte down the internet
Unfortunately this poster has previous history and has posted on this subject some time ago.
You will just end up going round in circles as I did when he first posted and I tried to help.
No chance, lol. I came across these videos on Youtube. I have others too, I will post in a second. I searched hard for videos that had a similar noise to mine. I have recordings of my own noise but it does not pick up well. Lots of people have helped here on this thread so why do you think I would just make it up to troll?
The issue has been investigated three times (by professional garages) and you cannot say that noise is acceptable. Because the issues were not noted I decided to go down the forum route more.
EDIT*
Here are the other videos (nothing to do with being a Porsche, I can’t believe you would think that). Even Porsches have their issues, see the video above for instance.
A video or sound recording of your own car is the one that will give credence to your post, random videos from the internet are just wasting peoples time.
Those people can make that choice for themselves and have done so by posting their thoughts which I will take on board and in fact make sure to tell the engineers at the dealerships. This whine noise by the way is common across MX5’s. Since you are the forum moderator and no doubt a long term reader of such issues and owner of MX5’s why don’t you offer your thoughts on what this issue could potentially be?
Linking your previous thread on the same topic from earlier in the year. Instead of posting random videos of other cars, if you think it is a real issue then take it to a specialist, repeatedly asking for many random opinions on a forum is unlikely to result in a good diagnosis.
I have and they note no noise. But what I am saying is the noise appears after some duration so it makes sense they did not pick it up. All opinions and answers I will of course use when I go back.
