Weird noise only @ 600-750 rpms. Outlander 2007

Hi everyone!

I have noticed that my Outlander (2007) is making a weird noise when reach 600-750 RPMs. It makes that noise only at 600-750 RPM approximately, not at more or less revolutions. When the AC is on is more noticeable. The noise comes from somewhere near the rack and pinion system. Actually when  I touch one of the power steering tubes I can feel  the vibration of the noise. I will try to record the sound so you can listen thru the web.  Have anyone noticed this noise or is able to reproduce this issue? The Outie is working properly in all aspects but this noise in really annoying some times. I’m going tomorrow to the service center. 

Sorry I could not be of any help, but good call on taking it for service, after all your under warranti. I've never heard any noise coming from were you say, so you should defenetly get it checked out.

I took my outie to the dealer this morning and i was scheduled for the next monday.  I have to wait a week for service. 

Well...as OTO said....it is under warranty, so I wouldn't get too upset by it as long it gets fixed.

They couldn't squeez you in and take a look? I hate when they do that........

Could very possibly be your PS pump, or maybe even something simple like a lack of fluid. BTW 600-750rpm is usually referred to as 'idle'.

A lack of fluid would indicate a leak though.

A little confused ..is it 1600 rpm as in the title of the thread or 600 rpm as in the body text?
 
 
 
 
 
 
 
 
 

Sorry 600-750 RPMs. 1600 was a typo.

Ill give you some info about the system so that you understand whats happening. It doesnt make it not a problem but maybe shed some light on whats happening.
 
The steering pump will make a rumbling type noise under a few different circumstances.
Super tight turning soon after the vehicles started. You should give the vehicle a chance to run a bit before hard cranking the wheel. Also most vehicles grumble when hard cranking the wheel to he stop, I try not to do this and with the small turning radius of the outie I havent evern come close.
The idle isnt high enough to run the steering pump properly, this is the most common right after starting the car.
Having a load on the engine such as running full AC, having the lights on the nav system and dvd player all put a load on the alternator which along with the AC puts extra drag on the engine which pulls the rpms down and causes the steering to surge.  Also if youve done something like let the kids watch dvds while the car isnt running this puts addditional load becasue the battery is undercharged and the alternator is trying harder to keep up.
However the newer vehicles should be better at keeping the rpms up under load so the steering pump can run.
The belt going to the pump can be too loosely adjusted from the factory
You can also have low fluid or a blocked orifrice. Which has been mentioned.
I can say that I have not noticed any steering noise at all on mine. It may not even be steering related but another issue that shows up as noise in the power steering.
Hopefully you can give them enough info that they can direct their attention to the problem area which may not be the steering at all.

quote:

ORIGINAL: Dusty Eclipse
 BTW 600-750rpm is usually referred to as 'idle'.

To reproduce the noise I have to press the gas pedal a little bit, so is not idle at all.

quote:

ORIGINAL: BoldlyGoingNowhere
The steering pump will make a rumbling type noise under a few different circumstances.
Super tight turning soon after the vehicles started. You should give the vehicle a chance to run a bit before hard cranking the wheel. Also most vehicles grumble when hard cranking the wheel to he stop, I try not to do this and with the small turning radius of the outie I havent evern come close.

The noise is not the normal sound of the PS when u are steering the wheel when the car is parked or in slow motion

quote:


The idle isnt high enough to run the steering pump properly, this is the most common right after starting the car.
Having a load on the engine such as running full AC, having the lights on the nav system and dvd player all put a load on the alternator which along with the AC puts extra drag on the engine which pulls the rpms down and causes the steering to surge.  Also if youve done something like let the kids watch dvds while the car isnt running this puts addditional load becasue the battery is undercharged and the alternator is trying harder to keep up.
However the newer vehicles should be better at keeping the rpms up under load so the steering pump can run.

My outie dont make the sound when is completely idle, only when i press the gas pedal a little bit or when the ac system raise the rpms near 750. I mean, the noise is VERY annoying and loud, and only happens after I drive like 15 minutes. BTW I'm not saying that the noise is produced by PS but is coming out near that area so I really dont know what is making this noise. I'll let you know in a week what the dealer discovered, if they do their job hehehe.

Thanks God is only a noise and not a malfunction. It is working fine.

quote:

ORIGINAL: phaserkb

quote:

ORIGINAL: Dusty Eclipse
BTW 600-750rpm is usually referred to as 'idle'.

To reproduce the noise I have to press the gas pedal a little bit, so is not idle at all.

 
Wait... in that case, what is your car idleing at?

I think I may know what you are talking about but need some more info.  What does the noise sound like?  Is it kind of a tinny rattling noise or something altogether different?  High pitch or low pitch?  Do you only notice it when the transmision is engaged?

quote:

ORIGINAL: rdenis

I think I may know what you are talking about but need some more info.  What does the noise sound like?  Is it kind of a tinny rattling noise or something altogether different?  High pitch or low pitch?  Do you only notice it when the transmision is engaged?

Ok.

The noise is like a rubber frictioning against a clean metal surface, a continuous  mid-high pitch. It happens always at 750 rpms no matter if its running, parked, neutral, reverse, ac on or off and after driving for 15 or 20 minutes (engine hot). Only near 750 rpms, no more or less. I'm trying to record the noise but I'm looking for a quiet place.

Hmm, not the same thing.  Look forward to hearing your recording.

Ok guys.

I recored the noise using my Creative, quality is not that bad tho.
Files are wav @ 22k sampling rate mono.

All recordings where made in  my garage.

The first recording: This morning  just starting the motor and is not making the noise.
Click here to download  (932 KB)

The second recording: Tonight after 30 minutes driving. I stood outside facing the hood.
Click here to download (1.10 MB)

The third recording: Just after teh second recording. I walked and placed the mic under the right front wheel.
Click here to download (1.02 MB)


Hope this give light to this issue.

Is your fan hitting something?

quote:

ORIGINAL: BoldlyGoingNowhere

Is your fan hitting something?

nope

One of the reasons I am really curious is I too have noticed an odd sound a couple of times.  However, I have only ever noticed it going through a drive-thru where the sound reverberated off the building and I had my window down.  But when you described it as occuring when the engine is warm and just coming off idle I thought bingo, exact same issue.  The sound I have is similar but maybe not as pronounced (I had the same thoughts as BGN as to perhaps fan blades hitting something).  I also can't comment as yet whether it occurs all the time - I suspect so.
 
I need to do some more investigating now that I have heard your sound clips.  How pronounced is the sound from inside the cabin with all your windows up?

What you should do while you hear the sound is take a stick and poke at things in the engine compartment (keep away from the surpentine belt obviously), wheel wells, and in the undercarraige until the sound goes away. It has to be something loose somewhere.

Trip to the Mits dealer next week.
 
Mits Dealer:  "Good morning sir, how can we be of assistance?'
 
Me:  "Wull I had this weird noise thang coming from the injun apartment an I was on one o'them internets and this crazy ol coot tol me to take a stick and start pokin round sum.  Maybe he thought I had a pesky possum or sum utter varmint stuck in there.  Well next thang I know there was a smokin and a hissin.  Whatch thanks wrong wit it?"
 
Mits Dealer:  "Well sir, I'm sorry to tell you but its sounds like you may have voided your warranty."
 
Me:  "What's this there warranty you sayin cause I'm not some dum farm boy who gone and fell offer the truck yah know!"
 
Mits Dealer:  "Uhhm right.  Actually forget about the warranty - let's see if we have a bigger stick around here."
 
Me:  "Yee hawr, now yer talkin!  I was thanking the stick was the prolem all long."

That was brutal rdenis.lol.

quote:

ORIGINAL: rdenis

Trip to the Mits dealer next week.

Mits Dealer:  "Good morning sir, how can we be of assistance?'
 
Me:  "Wull I had this weird noise thang coming from the injun apartment an I was on one o'them internets and this crazy ol coot tol me to take a stick and start pokin round sum.  Maybe he thought I had a pesky possum or sum utter varmint stuck in there.  Well next thang I know there was a smokin and a hissin.  Whatch thanks wrong wit it?"
 
Mits Dealer:  "Well sir, I'm sorry to tell you but its sounds like you may have voided your warranty."
 
Me:  "What's this there warranty you sayin cause I'm not some dum farm boy who gone and fell offer the truck yah know!"
 
Mits Dealer:  "Uhhm right.  Actually forget about the warranty - let's see if we have a bigger stick around here."
 
Me:  "Yee hawr, now yer talkin!  I was thanking the stick was the prolem all long."

 
 
I live out in the sticks and I couldn't have done that any better! Is there a english to redneck translator online somewhere? HAHAHAHA yeeeeee hawwrrrrrr

Hey now be nice....I know it is hokey, but it has worked for me in the past. I got the idea from a *ahem* Mits mechanic...so blah...