Engine getting louder

Dilbert · 10-19-2006, 12:25 AM

The engine noise at high RPM has been getting louder on our 2004 Prius with 21K miles. Almost like a bad muffler. Anyone else have this happen?

Charles Suitt · 10-19-2006, 01:10 PM

Hi Dilbert

My 2004 has just under 22,000 miles on the clock. I have not noted any change in ICE sound as the miles increased. My only real noise issue is with the OEM tires, particularly on rough pavement; however, since I keep my radio tuned to my favorite Classical station, this tends to mask some sounds.

tomdeimos · 10-19-2006, 01:43 PM

<div class='quotetop'>QUOTE(Dilbert @ Oct 19 2006, 12:25 AM) [snapback]334917[/snapback]</div>

Quote:

The engine noise at high RPM has been getting louder on our 2004 Prius with 21K miles. Almost like a bad muffler. Anyone else have this happen?
[/b]

Are you sure? Noise at a given rpm should not change, but with colder weather it should run much more at higher and noiser rpms.

ken1784 · 10-19-2006, 01:54 PM

<div class='quotetop'>QUOTE(Dilbert @ Oct 19 2006, 01:25 PM) [snapback]334917[/snapback]</div>

Quote:

Almost like a bad muffler.
[/b]

Please visit your dealer to find out the root cause of the problem.

Ken@Japan

**TonyPSchaefer** · 10-19-2006, 10:15 PM

Dilbert,
Great to see you again. Dude, you really need to come around more often.

Since it's an '04 and you've been through a couple winters like Charles, Ken and I have, I'm going to assume that you're not talking about a cold engine working a little harder. With 20,250 miles, that's all I notice but only during situations like dead-stop acceleration.

Until you take it to the dealer like Ken suggestions, let's do some troubleshooting. Have you had someone run the ICE while you're standing outside the car to help locate the source of the noise? Are there any situations in which the noise is present or more noticeable? What is the air-speed velocity of an unladen swallow?

Dilbert · 10-20-2006, 01:00 AM

Yes it has been a while since I last posted, just busy I guess. The engine sounds fine at idle and regular driving. It is only when you put the pedal way down to climb a hill that it gets louder, and I mean louder than it used to. Even my wife commented about it without me asking. I better get it in to the dealer.
Thanks for the help.

eagle33199 · 10-20-2006, 08:48 AM

<div class='quotetop'>QUOTE(TonyPSchaefer @ Oct 19 2006, 09:15 PM) [snapback]335365[/snapback]</div>

Quote:

Dilbert,
Great to see you again. Dude, you really need to come around more often.

Since it's an '04 and you've been through a couple winters like Charles, Ken and I have, I'm going to assume that you're not talking about a cold engine working a little harder. With 20,250 miles, that's all I notice but only during situations like dead-stop acceleration.

Until you take it to the dealer like Ken suggestions, let's do some troubleshooting. Have you had someone run the ICE while you're standing outside the car to help locate the source of the noise? Are there any situations in which the noise is present or more noticeable? What is the air-speed velocity of an unladen swallow?
[/b]

What do you mean, an African or European swallow?

john1701a · 10-20-2006, 09:47 AM

How does he know so much about swallows?

bhaynnes · 10-20-2006, 12:14 PM

<div class='quotetop'>QUOTE(john1701a @ Oct 20 2006, 06:47 AM) [snapback]335496[/snapback]</div>

Quote:

How does he know so much about swallows?
[/b]

When you are a king, you need to know these things.

eagle33199 · 10-20-2006, 12:54 PM

<div class='quotetop'>QUOTE(bhaynnes @ Oct 20 2006, 11:14 AM) [snapback]335595[/snapback]</div>

Quote:

When you are a king, you need to know these things.
[/b]

Bahhhh, so close, and yet so far...

Well, you have to know these things when you're a king you know.

10-19-2006, 10:15 PM	#5
TonyPSchaefer Your Friendly Moderator Join Date: May 2004 Location: Far-North Chicagoland Posts: 10,498 My Car: 2004 Prius Model: Package: #9 Thanks: 39 Thanked 165 Times in 106 Posts Friends: 23	Dilbert, Great to see you again. Dude, you really need to come around more often. Since it's an '04 and you've been through a couple winters like Charles, Ken and I have, I'm going to assume that you're not talking about a cold engine working a little harder. With 20,250 miles, that's all I notice but only during situations like dead-stop acceleration. Until you take it to the dealer like Ken suggestions, let's do some troubleshooting. Have you had someone run the ICE while you're standing outside the car to help locate the source of the noise? Are there any situations in which the noise is present or more noticeable? What is the air-speed velocity of an unladen swallow? __________________ Proud father of Priapus: the '04 Tideland BC9 with an OEM EV button and sense of self-righteousness Current Mileage Chicago Prius Group Website Chicago Hybrid Group on FaceBook Find me on faceBook

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10-19-2006, 12:25 AM	#1
Dilbert Member Join Date: Mar 2004 Location: Seattle Posts: 40 My Car: 2004 Prius Model: Package: #7 Thanks: 0 Thanked 0 Times in 0 Posts Friends: 0	The engine noise at high RPM has been getting louder on our 2004 Prius with 21K miles. Almost like a bad muffler. Anyone else have this happen?

10-19-2006, 01:10 PM	#2
Charles Suitt Senior Member Join Date: Oct 2004 Location: Dallas TX Posts: 1,624 My Car: 2007 Prius Model: Package: #6 Touring Thanks: 0 Thanked 1 Time in 1 Post Friends: 0	Hi Dilbert My 2004 has just under 22,000 miles on the clock. I have not noted any change in ICE sound as the miles increased. My only real noise issue is with the OEM tires, particularly on rough pavement; however, since I keep my radio tuned to my favorite Classical station, this tends to mask some sounds.

10-20-2006, 01:00 AM	#6
Dilbert Member Join Date: Mar 2004 Location: Seattle Posts: 40 My Car: 2004 Prius Model: Package: #7 Thanks: 0 Thanked 0 Times in 0 Posts Friends: 0	Yes it has been a while since I last posted, just busy I guess. The engine sounds fine at idle and regular driving. It is only when you put the pedal way down to climb a hill that it gets louder, and I mean louder than it used to. Even my wife commented about it without me asking. I better get it in to the dealer. Thanks for the help.

10-20-2006, 09:47 AM	#8
john1701a Senior Member Join Date: Jan 2004 Location: Minnesota Posts: 3,375 My Car: 2010 Prius Model: IV Package: Solar Roof Thanks: 9 Thanked 145 Times in 70 Posts Friends: 12	How does he know so much about swallows?