How does my car sound? - Chevy Impala Forums
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post #1 of (permalink) Old 03-24-2017, 11:50 PM Thread Starter
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How does my car sound?

I don't think my car sounds as good as it should. Some of you may think it sounds bad. But the squeaking only happens when I've got the air on in the car. Regardless of whether it's cold or hot.
The sound of the exhaust
The sound of the engine
More sound of the engine
Here's another question is there anyway I can clean under the hood? Like it's all dirty haha. I understand it's gonna get that way again, I just want to clean it if I can.

Thanks. -Nick.

*Edit* I didn't realize they would come up like that. Guess that works haha.

My first car!

P.S I fixed it haha.
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post #2 of (permalink) Old 03-25-2017, 06:08 AM
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I'm not familiar with the sound on this generation Impala, but I think your engine sounds fine. Your exhaust sounds strange, but I can't put my finger on it. Sorry I'm not much help there.

To clean your engine, it's absolutely possible. I like working with a warm car, not hot. Remove the negative terminal from your battery and tuck it away. Or, heck, remove the battery completely. Wrap up your alternator and other sensitive electronics, and have at it with a degreaser, (try not to get degreaser on your paint, some degreasers can eat through clear coats) let it sit for a few minutes, use a brush or cloth of some sort to get the really stubborn stuff out, then take a garden hose to it.

Some people use a power washer, personally, it scares me. Make sure the degreaser doesn't completely dry off, and don't use brake cleaner or anything too harsh, it could eat through some plastics or shorten the lifespan of your belts. Also make sure to keep the water jet moving, I'm always paranoid about forcing water into areas it shouldn't go.

Last edited by TeeRev; 03-25-2017 at 06:32 AM. Reason: Detail
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post #3 of (permalink) Old 03-25-2017, 06:38 AM
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some members have manually cleaned under the hood by scrubbing all the different areas and detailing it out completely. the quick and easy way is to go to the local manual car wash and select engine degreaser. now while doing this i do not recommend spraying full pressure on top of your motor if it seems like it has a lot of pressure (it's kind of a use your best judgement scenario). you soak the engine bay with the degreaser (trying to stay away from the battery and other high concentrations of electrical, i personally leave the car running so i can hear if i caused an issue or not). let the degreaser set for a few minutes and then spray it off with a normal rinse (again no high pressure to the engine bay, kind of a let the water naturally carry away the debris and dirt). make sure you rince off the outside of your car as well to get the degreaser off of your paint! do this when it's a nice warm day so you don't introduce super cold water to a hot engine (fear of cracking the engine block is my thoughts).

if you want to go full detail, this kid gives you an idea of what it takes:
. i found this after a quick youtube search.
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post #4 of (permalink) Old 03-25-2017, 10:04 AM
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Sounds normal Nick. The chirping is probably your compressor. The bearings aren't very happy after 200,000 but shouldn't hurt anything.
Exhaust sounds like the catylitic converter material has mostly been blown out or it's missing the resonator.


~Joe~

04 Impala LS

LED cluster, HVAC, headlights, interior lights
Dual SS Xlerators
SS Xlerator Resonator
4" SS Tips
ZZP DP
ZZP PCM
ZZP 180 drilled t-stat
Optima Red Top battery
Tubular trailing arms
Police LCA's
Police brakes
Dorman solid sway bar
Many more mods to come!
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post #5 of (permalink) Old 03-26-2017, 06:27 AM
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The trick is to not let it get greasy.

I often open the hood and spray down everything with soap at the car wash, and then give it a rinse, mostly in the nasty weather time of year. Not every time, but almost every time. I mostly use drive thrus in good weather.

This keeps it looking nice, but the aluminum parts oxidise over time, and degreaser just makes the icky go away, the aluminum still looks aged.

I've found that Simple Green sprayed on the wettened aluminum, let to sit for a time, brush lightly, and rinse, and the aluminum looks a lot better. Do not let the engine dry out completely, with cleaner on it, to keep the cleaner action active and to prevent discoloration of painted surfaces. I have never had any bad issues doing this on several cars.

I hose the whole front of the car so that the cleaner doesn't ever to get to dry surface where it might discolor, including the paint.
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post #6 of (permalink) Old 03-28-2017, 05:47 PM Thread Starter
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Quote:
Originally Posted by 04Imp38 View Post
Sounds normal Nick. The chirping is probably your compressor. The bearings aren't very happy after 200,000 but shouldn't hurt anything.
Exhaust sounds like the catylitic converter material has mostly been blown out or it's missing the resonator.
Okay. Should I replace the bearings or leave them? Should I replace the catylitic converter? Or how does that work? Thanks.

My first car!

P.S I fixed it haha.
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post #7 of (permalink) Old 03-28-2017, 06:57 PM
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How does my car sound?

I would say leave the compressor bearing for now. I've seen them go over 300,000MI without failing but I've seen them fail in half that time too. It's made it this far so not a huge deal. Bearing is $15, changing it could be a couple hundred.
Cat is dependent on if you have emission inspections in your state. If you do it may not pass, however if you don't, and nothing about the exhaust annoys you then it isn't hurting anything. As long as it's not leaking exhaust underneath the car, you should be fine.
Cat can be pretty expensive so keep that in mind. At least $3-500 or up for a shop to do it. I would always have a shop do your exhaust work. Also check and make sure you have three things on the exhaust pipe. Starting where it comes down from the engine it's cat first, then resonator which looks like a long round tube, then muffler which is at the rear of the car. If any of these are missing it could sound different, however it won't hurt your engine necessarily.


~Joe~

04 Impala LS

LED cluster, HVAC, headlights, interior lights
Dual SS Xlerators
SS Xlerator Resonator
4" SS Tips
ZZP DP
ZZP PCM
ZZP 180 drilled t-stat
Optima Red Top battery
Tubular trailing arms
Police LCA's
Police brakes
Dorman solid sway bar
Many more mods to come!

Last edited by 04Imp38; 03-28-2017 at 07:02 PM. Reason: Added info
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