I dropped my 8 last monday night they changed the A/C and pulleys that didnt work. They changed the Air compressor pulley's and belt that didnt work. So the whole time my car was in the shop for 3 days they couldnt figure it out. I dont know if anyone is having similar problems. I hear this chirping noise it sounds like the belt or something you can hear it rotating. I might have to dropped it off again next week. What should I do?

first thing i always look at with a chirp in the engine bay is water pump. did they look at that before doing the other stuff?

first thing i always look at with a chirp in the engine bay is water pump. did they look at that before doing the other stuff?


Hmm when I turned on my car I could hear water... But it sounds like its a belt I have asked my friends with rx8 to listen to the noise they say it has to be a belt.

but if they changed the belt and it still makes the noise...... the water you are hearing is gurgling thru the heater, thats air trapped in there. not a big deal but there are ways to get rid of it.

Belt dressing can quiet a noisy belt, at least temporarily enough to identify it as the source.

take it to a rotory pro. that's my advice for everything lol. these guys at the dealer don't know how to work on wankles. if they didn't have the manual they would think it was a 4banger

If it chirps for an instant when you rev the engine it is normal. That is the normal combustion noise of the rotary. Sometimes it becomes more pronounced after a PCM reflash, or the battery has been disconnected.

When does it chirp?

Likewise, when does it chirp?

Has anyone had their head under the hood while it makes the noise? The a/c compressor clutch makes noise when it engages and disengages. Of course that noise will be somewhat random.

If it chirps for an instant when you rev the engine it is normal. That is the normal combustion noise of the rotary. Sometimes it becomes more pronounced after a PCM reflash, or the battery has been disconnected.

When does it chirp?

When its in Idle but I sometimes hear it while Im driving.

If it chirps for an instant when you rev the engine it is normal. That is the normal combustion noise of the rotary. Sometimes it becomes more pronounced after a PCM reflash, or the battery has been disconnected.

When does it chirp?


Sounds to me like a momentary lean out condition. Normal, if only heard at startup and when you blip the throttle.

Sounds to me like a momentary lean out condition. Normal, if only heard at startup and when you blip the throttle.

It is not leaning out, it is the sound of combustion (rotary engine combustion is much more violent than a reciprocal). I have never had an engineer explain exactly what they mean by violent, but the fact that you have two flame fronts (from the trailing and leading part of the combustion chamber) must contribute to it.

sillygrl, sorry, I'm lost. 'Fraid it is in the hands of the gods (or technicians).

It's called a "Jet Air valve", and according to Mazda's tech line, it's louder in some cars then others, but a normal operating noise. Don't ask me what it does.... I have the noise, too, and my dealer tech (A long-time Rotary tech who REALLY knows his trade) got the info from Mazda.

sillygirl, when you press the clutch it goes away?

mine is in the shop for this, it sounds like a mousewheel that is unoiled. my throwout bearing is defective....

This occured because my flywheel wasnt torqued to spec, it ruined my Pressure plate clutch and throwout bearing, The throwout bearing is what is causing the noise. PM me

Is this ths noise?

Not you Abbid..Yours is a tranny issue.


WHINE OR SQUEAL NOISE FROM ENGINE AT IDLE
Applicable Models
Model Starting S/N Ending S/N
2004 RX8 00000000 ZZZZZZZZ

Some customers may complain of a high-pitched whine or squeal noise fromthe engine at an idle. The noise can be eliminated by raising the engineRPM slightly above idle. This is most likely caused by the primary port jet air nozzles and / or the metering oil pump air ports. The jet air nozzles are located in the primary port of each rotor. The jet air flow is acheived by using air flow from an area prior to the throttle plate. The metering oil injection nozzles also use this airflow prior to the throttle plate to assist oil flow into the engine. This creates a metered vacuum leak into the engine and may cause a high pitched whine at idle. This noise is considered to be a normal characteristic of the RENESIS rotary engine. Use the procedure outlined in the repair instructions to confirm noise is from the jet air or metering oil pump nozzles. 1.Confirm noise. 2.Remove engine cover. 3.Locate both air supply hoses for jet air nozzles and metering oil pump nozzles. Hoses are attached to the air duct located between the MAF and throttle body. Disregard hose that attaches to the oil filler tube4.Confirm noise is caused by jet air or metering oil pump nozzles by temporarily pinching off air supply hoses using pliers. 5.No repairs should be attempted if noise is reduced or eliminated.

mine isnt a tranny issue, my throwout bearing turned into a tranny issue.

I was trying to separate the engine noise from "other".

The noise in the MRI I posted can be slightly louder in some cars than others.

I had a forum member in a while back and we noticed it on two or three cars.

mine for sure was rotational, it would speed up with engine speed, up till about 1500 RPM, then it went silent, also it would make noise and when i would hit the clutch, the car was silent. Lets see if silly's is the same..

This is fixable right??

sillygrl, does it stop when u hit the clutch? does it speed up when u rev a little bit?

Ok I just got my car yesterday. Mazda called the tech line and said that its normally becuz some cars it can be louder some cars it can be faint. They told me to keep getting it to high rpm's and maybe it will go away. My friend's 8 had this problem but it just went away. So we will see.

I have such a noise when it is colder outside. It seems to come from the AIR pump (it has a fan of some kind) and it varries with the RPM. The AIR pump is a black assembly located on the top of the engine, passenger side. Maybe you guys can listen to it when someone revs the engine... Mine sounds like a turbine and is louder than the engine itself.

I don't want to high-jack a thread, but today I too noticed a very odd and loud noise at full throttle or dipping into the throttle (In any gear) that resembles a chirp/screech/ultra high-pithced rattle which occurs from 5500-6200 RPM and sometimes occurs even closer to 8000+. I have noticed this since around 250 miles, but today (800+ miles) was the first day I could have the windows down and it was LOUD-echoing off buildings. If it were not so high pitched, I'd think it was an exhaust buzz. Is this a proper description of the sound you are all refering to? I have never had any CELs or anything yet, just this odd sound. Any thoughts?

Mazda replaced my spark plugs cuz my car flooded last January but since they replaced the spark plugs the noise has gone away.

I am not sure exactly what noice you are referring to? Mine makes a noticable chirp sound when I accelerate after I shift gear at low RPM. It revs up with engine speed, and goes away at mid-high RPM. Is it normal? Is it same kind of noice you hear. sillygirl?

I am not sure exactly what noice you are referring to? Mine makes a noticable chirp sound when I accelerate after I shift gear at low RPM. It revs up with engine speed, and goes away at mid-high RPM. Is it normal? Is it same kind of noice you hear. sillygirl?


Yes, the noise would go away at mid-high rpms.

Some customers may complain of a high-pitched whine or squeal noise from
the engine at an idle. The noise can be eliminated by raising the engine
RPM slightly above idle. This is most likely caused by the primary port
jet air nozzles and / or the metering oil pump air ports. The jet air
nozzles are located in the primary port of each rotor. The jet air flow
is acheived by using air flow from an area prior to the throttle plate.
The metering oil injection nozzles also use this airflow prior to the
throttle plate to assist oil flow into the engine.
This creates a metered vacuum leak into the engine and may cause a high
pitched whine at idle.

This noise is considered to be a normal characteristic of the RENESIS
rotary engine. Use the procedure outlined in the repair instructions
to confirm noise is from the jet air or metering oil pump nozzles.

1.Confirm noise.
2.Remove engine cover.
3.Locate both air supply hoses for jet air nozzles and metering oil pump
nozzles. Hoses are attached to the air duct located between the MAF
and throttle body. Disregard hose that attaches to the oil filler tube
4.Confirm noise is caused by jet air or metering oil pump nozzles by
temporarily pinching off air supply hoses using pliers.
5.No repairs should be attempted if noise is reduced or eliminated.

or this one one of the 2

A chirp or squeak may be heard at times from the engine compartment.
This can occur at engine start, or during engine acceleration. The
noise can easily be mistaken for a squeaky accessory drive belt. The
noise is actually caused by a slight momentary lean mixture, which
results in engine detonation.(Pinging) The RENESIS rotary engine runs
much leaner than previous rotary engines, resulting in improved fuel
economy N lower exhaust emissions. This momentary lean condition will
not cause engine damage.

IMPORTANT!
It is important to note that customers who use low octane fuel will
experience a noticeable increase in engine noise. The RX8 requires
premium fuel for best performance N engine life.

ummm... I now have a whine not a chirp. Swear its the bearing. Sounds just like it.

But for some reason I think it's a little behind the water pump. i really haven't checked it out yet.

Damn, it's been there for quite some time.

Now I go out and check, and nothing. Only the sucking noise from the intake.

Hi guys, I just picked up my brand new RX8 from Mazda and unfortunitly I got this whine/squeal noise problem at low RPM. I am very worried right now. Can anyone tell me will this problem go away after I drive it for sometime or I need to bring the car back to dealer for a check/fix? Please kindly advise. Thanks

sillygirl, when you press the clutch it goes away?

mine is in the shop for this, it sounds like a mousewheel that is unoiled. my throwout bearing is defective....

This occured because my flywheel wasnt torqued to spec, it ruined my Pressure plate clutch and throwout bearing, The throwout bearing is what is causing the noise. PM me

mine for sure was rotational, it would speed up with engine speed, up till about 1500 RPM, then it went silent, also it would make noise and when i would hit the clutch, the car was silent. Lets see if silly's is the same..
Hey... I've noticed the same noise in my engine for two weeks now, I hear something like two metals scratching in cyclical motion at low RPM upon engine start. The sound lasts for as long as the engine is running on idle even if it's warm, it disappear once I depress the clutch and in gear... Otherwise, it can be heard if the car is in neutral.

Hey... I've noticed the same noise in my engine for two weeks now, I hear something like two metals scratching in cyclical motion at low RPM upon engine start. The sound lasts for as long as the engine is running on idle even if it's warm, it disappear once I depress the clutch and in gear... Otherwise, it can be heard if the car is in neutral.

You do realize you just bumped a five year old thread right? :wallbash:

Yeah, apparently... it's the closest to the issue I'm having now :)

I've been getting a "chirp" when I turn on AC sometimes if it rained overnight

yiksing...........that ones a belt slip for sure. Some belt dressing will take care of that one.

yiksing...........that ones a belt slip for sure. Some belt dressing will take care of that one.

Check the belt tension too.

Check the belt tension too.

^.....okay, fine.....it could be that as well. :)

It could also just be too much of a worn out belt in his case. :dunno: