I recently had some warranty work done on my 07 EX Coupe MT. Among the complaints I had when I brought it in was that since new the car has had a very audible high frequency whine sound, proportional to engine speed, coming from the accessory side of the engine. For a while I thought it was the alternator, and mentioned that when I took it in. I don't necessarily think it's a mechanical problem, but it's pretty annoying to me as I drive with the radio off and generally like listening to cars.
They came back saying my power steering pump was the source, and they ordered a replacement, which went in earlier this week. Part of the sound may or may not have gone away. I remember thinking it was much quieter when I got the car back but now either the noise has come back or I've abandoned my wishful thinking that it was gone.
The dealership says that while they compared my car to others and mine was louder, they all have something of a whine to them. To be clear, they are not refusing to look into this or further replace parts, but I don't really want to take it in for more work unless necessary.
At this point I'm wondering if it's the serp belt tensioner pulley. I'm going to look into it a little to see if I can isolate it but it's pretty cramped in there and I may not be able to figure it out. I can take it in again and have them diagnose it but first I wanted to ask other owners on here what their cars sound like since I haven't been in or around any other 8th gen Civics.
So, the question: with your radio off, and the car idling, or held to say, 2k RPM, what sounds can you hear? There's the injector tick and the general medium frequency noise caused by the valve train, the exhaust, the combustion in general, but can you also hear a higher pitched whine? On my car it's at least as loud as the other noise at 2k RPM, but a bit more biting because of its frequency.
EDIT: To be clear, the whine can easily be heard going up through the gears until about 25-30 mph with the radio off. After 30 mph or so it's drowned out by road noise. After 3500-4000 RPM it's drowned out by intake roar and other engine sound.
They came back saying my power steering pump was the source, and they ordered a replacement, which went in earlier this week. Part of the sound may or may not have gone away. I remember thinking it was much quieter when I got the car back but now either the noise has come back or I've abandoned my wishful thinking that it was gone.
The dealership says that while they compared my car to others and mine was louder, they all have something of a whine to them. To be clear, they are not refusing to look into this or further replace parts, but I don't really want to take it in for more work unless necessary.
At this point I'm wondering if it's the serp belt tensioner pulley. I'm going to look into it a little to see if I can isolate it but it's pretty cramped in there and I may not be able to figure it out. I can take it in again and have them diagnose it but first I wanted to ask other owners on here what their cars sound like since I haven't been in or around any other 8th gen Civics.
So, the question: with your radio off, and the car idling, or held to say, 2k RPM, what sounds can you hear? There's the injector tick and the general medium frequency noise caused by the valve train, the exhaust, the combustion in general, but can you also hear a higher pitched whine? On my car it's at least as loud as the other noise at 2k RPM, but a bit more biting because of its frequency.
EDIT: To be clear, the whine can easily be heard going up through the gears until about 25-30 mph with the radio off. After 30 mph or so it's drowned out by road noise. After 3500-4000 RPM it's drowned out by intake roar and other engine sound.
