High pitch engine whine at highway speeds
 

I have a 2002 P5. At very light throttle cruising at 70-75MPH the engine emitts a gear-like/high pitch whine. if i let off the gas it goes away, if i input more throttle it goes away. its a very high frequency, maybe a vacuum leak or something.

anyone out there notice this?

Thanks, todd

Don't have this problem with my P5.. One question, though. Do you have an automatic or a manual? That may help answer your question.

i know what you are talking about. it sounds almost like a turbo whine. this only occurs at high rpm's tho.

Yes, I've occasionally noticed it too, and my ES is brand new. Not worried about it at all though, since I've heard it on other cars. On my very first car, it was noticeable only when the headlights were on, so I always put that sound down to being the alternator.

it seems to be a common prob within the pros of the 3rd generation. i have it and so do a few other ppl

I don't :p

My friend's Infinity's got this high pitched noise when he accelerates.... could be the same thing?

Hmm... could it eb that deer whistle thingee people mount on the front of their cars??? They kick in at 2k prm right?

Does it make any difference whether the radio is on or off?

sometimes certain am channels will puck up a whine (i am being serious this time)

I have the same noise on my 99 Protege Automatic.. When I got the car they said it was just a normal sound that they made and not to worry about it. I have drove other 3rd gen Pro automatics and they do the same thing. My car now has 76k on it and has had no problems..So I guess this is just a normal sound that these cars make. I don't know if the manual's do it too but all of the automatics I drove done it..

thanks
Barry

Thanks
 

Thanks everyone for your responses.

I do have an automatic (unfortunately, ha ha)

it makes the whine with the radio off.

maybe i will try some Synthetic AFT in the trans and see if if changes it.

todd

Re: Thanks
 

I think the radio being on helps drown out that noise. :p

a good head unit will drown out almost every major manaufacturer's defect!

I get the same noise exactly above 120 km/hr, and it's definately coming from the speakers. I have a cheap pioneer head unit, and stock-wires. My friend says all I need is some noise filter for the head unit.

if you have an amp, i have been taught that the wire that connects to the amp need to be a certain caliber braid to have the greatest resistance to picking up interfereance

thats the point....




:withstupi

hahahhaha ok, i thoguht you seriously didnt know:D [/B][/QUOTE]


i'm no tard!!!

I am NOT an expert on car stereos, I've been told that the speaker wires and/or internal wiring in the head unit will sometimes pick up radio frequency noise from the car's ignition system, even if the stereo is off. Switching the stereo on (even with the volume turned all the way down) will sometimes change the noise or make it go away. This will tell you that the problem is coming from the stereo.

My old Toyota Camry used to have a whine like this, and turning the stereo on would make it change pitch. However, like I said, I'm not an expert and I have no clue how to fix it :(

yeh I get that same noise, high pitched whistling/whining sound when i am cruising at 70+ MPH or so on the highway. and at around at cruising rpm.

I have 2000 LX 1.6L Auto.

Wonder what it is ? sounds like air though. but what do i know ?

on the p5 the roff rack is what makes the noise when cruising at 50 + mph.
solution:
take the roof rake off and no noise.:)

My P5 (2002.5, two weeks old) has the same problem. It really bugged me, so I went to the dealership. Here is what they wrote after three hours test.

TEST DROVE VEHICLE 39 MILES AT SPEEDS FROM 60-80MPH, MAINLY HEARD THE NOISE AROUND 70 MPH. CHECKED ALL WINDOW MOLDINGS, ECT. CHECKED ESI, NO TSB'S LISTED. REMOVED AIR INTAKE SCOOP, REDR OVE, NOISE IS STILL PRESENT. CALLED TECH LINE, THEY HAD UNPOSTED TIP REFERENCE #265893. NORMAL NOISE FROM THE TRANSMISSION, WILL NOT CAUSE ANY DAMAGE. THERE IS NO REPAIR AT THIS TIME.

Well, it sounds strange, but the noise comes from the transmission. They said this kind of problem might be a recall item.