Engine idle chirping (cricket) noise poll.

[Kosmos]

I just got my frs last 2 days it has 4k miles and I hear a bit of chirping

[Sigh-on-Rice]

Originally Posted by Sigh-on-Rice

I had chirp from about 300 miles to 8000 miles.
It magically stopped at 8000 miles.
I'm at 9500 miles and still got no chirp.
My car is 100% stock except the tint.

I use either Shell or Chevron with ethanol.

The above post was posted on 4/15. On 4/16, I fill up the gas at Shell, and the chirping returned right away. I filled up the gas again yesterday at Chevron and it's still chirping. I don't know what those 2 months of no chirping was... But it seems to have something to do with the batch of the gas since I only fill up the gas from 3 stations (2 Chevron and 1 Shell) I have 98xx miles now. I'll stick to only Chevron for now and see how it goes.

[DylanFRS]

I have the chirping at idle after long drives (2500mi) but I also get an occasional single chirp here and there while cruising down the highway or even regular roads. Is this typical of what other people are getting or do most people only hear it at idle? For a while I thought it was a suspension squeak but it isn't consistent with bumps in the road.

[Sigh-on-Rice]

Originally Posted by DylanFRS

I have the chirping at idle after long drives (2500mi) but I also get an occasional single chirp here and there while cruising down the highway or even regular roads. Is this typical of what other people are getting or do most people only hear it at idle? For a while I thought it was a suspension squeak but it isn't consistent with bumps in the road.

That noise probably is this.

[DylanFRS]

Wow... So after reading through this thread I decided to look up ethanol free stations in Wichita. I have been getting the cricket at idol for a while now and could even hear it as I pulled up to the station. Filled the tank from 1/4 with ethanol free and the cricket was gone by the time I got home, about 5 minutes after fill up.

Crazy it is that sensitive. Don't know about the intermittent chirps but I am assuming it is that A/C chirp which some people have said was taken care of with the same fix as the cricket. I'll let you know if that goes away too.

I guess I am fortunate to have an ethanol free station on the way home.

[strat61caster]

Originally Posted by DylanFRS

Don't know about the intermittent chirps but I am assuming it is that A/C chirp which some people have said was taken care of with the same fix as the cricket. I'll let you know if that goes away too.

I can't even begin to comprehend how those two could be conceived as related.

[DylanFRS]

Originally Posted by strat61caster

I can't even begin to comprehend how those two could be conceived as related.

I don't know, I guess people like the guy in this thread, where he says:

Problem #2 A/C Chirp
The fuel delivery replacement also remedied the A/C chirp (where the car would emit a loud single chirp every 15-20 seconds when moving with the air conditioning on).

But its cool, instead of actually contributing to this thread, you can just condescend me for trying to contribute...

[JaggedEdge]

I have 435 miles and I get the chirping crickets but if I raise the idle to 1000 rpm s the sound goes away.

[strat61caster]

Originally Posted by DylanFRS

I don't know, I guess people like the guy in this thread, where he says:



But its cool, instead of actually contributing to this thread, you can just condescend me for trying to contribute...

Sorry.

Here's how A/C works. A working fluid is compressed thereby lowering it's temperature, air is blown across the fluid cooling the air resulting in a nice breeze for you. In a car this is accomplished by a compressor which is driven by a belt attached to the crankshaft. Powering the compressor all the time would take away power from your wheels, so there is a clutch similar to the one in the transmission allowing the belt to spin freely with little load on the engine. The "chirp" is related to the clutch engaging and slipping that occurs either on the belt or the clutch creates a noise.

As you can see in the above description (which is how A/C has worked for roughly 60 years in automobiles) the fuel system IN NO WAY INTERACTS with the A/C system (other than to contribute the fuel that powers the machine that powers the A/C).

Looking at the post you linked, some have said that tightening the belt that drives the A/C compressor reduces or eliminates the noise, it is possible that during the fuel pump swap the belts were re-tensioned reducing/eliminating the noise. Changing the fuel will not change how the air conditioning system operates, which is what you implied in your original post.

Apologies for sounding like an ass.

[DylanFRS]

Originally Posted by strat61caster

Sorry.

Here's how A/C works. A working fluid is compressed thereby lowering it's temperature, air is blown across the fluid cooling the air resulting in a nice breeze for you. In a car this is accomplished by a compressor which is driven by a belt attached to the crankshaft. Powering the compressor all the time would take away power from your wheels, so there is a clutch similar to the one in the transmission allowing the belt to spin freely with little load on the engine. The "chirp" is related to the clutch engaging and slipping that occurs either on the belt or the clutch creates a noise.

As you can see in the above description (which is how A/C has worked for roughly 60 years in automobiles) the fuel system IN NO WAY INTERACTS with the A/C system (other than to contribute the fuel that powers the machine that powers the A/C).

Looking at the post you linked, some have said that tightening the belt that drives the A/C compressor reduces or eliminates the noise, it is possible that during the fuel pump swap the belts were re-tensioned reducing/eliminating the noise. Changing the fuel will not change how the air conditioning system operates, which is what you implied in your original post.

Apologies for sounding like an ass.

I know how A/C systems works...

That compressor you speak of, requires a work input that comes indirectly from the engine through the pulley belt. It is possible that when the clutch engages and the extra load is put on the engine that the fuel pump could also have a quick jump in output causing the squeak.

I did not realize that it had been PROVEN that it was in fact the A/C clutch directly making the noise. (Has it or is it still a THEORY?)

Besides, I didn't say that I thought it would fix the problem. I said that it did not fix my problem even though other people had said that it fixed the chirp. Just trying to provide all of the information as it pertains to other people's findings in the past. (IE: someone said that fixing the fuel pump issue also fixed their A/C issue, I was stating that this was not the case with my car.)

Please don't give me another in-sincere apology where you talk down to me and then apologize. You're not the only one on this forum with any knowledge about cars.

[strat61caster]

Originally Posted by DylanFRS

I know how A/C systems works...

Apologies again, I just cannot comprehend how changing the fuel would change the noise an A/C system makes so I took a reasonable tack in explaining my logic.

You are right, there could be another noise you are hearing that could be fuel related a la this:

Originally Posted by DylanFRS

It is possible that when the clutch engages and the extra load is put on the engine that the fuel pump could also have a quick jump in output causing the squeak.

Which would occur any time the load on the engine suddenly increased such as engaging the clutch to move forward or a strong gust of wind, this does not appear to be the case but is a possibility.

As for proof on the "THEORY" I know that's what it is in my car, it chirps, I feel the load on the engine and the air coming through the vents gets cooler. Not much to diagnose, and after my post I realize that it's likely the belt is a bit loose and tightening it would alleviate the noise (but I don't want to overtighten, it's a small noise) rather than the clutch.

Originally Posted by DylanFRS

Besides, I didn't say that I thought it would fix the problem. I said that it did not fix my problem even though other people had said that it fixed the chirp.

That was not clear in the post I quoted, my apologies for misinterpreting and I'm glad we are on the same page.
:happy0180:

[DylanFRS]

Originally Posted by strat61caster

I'm glad we are on the same page.
:happy0180:

May have got a bit defensive myself, sorry for that.

Hugs then? :happy0180:

[Skurj]

I voted no... I have 4500 kms on the car and haven't heard this noise... though to be fair I haven't even had the hood open since I took delivery..

[root]

Also most cars I know have some kind of system that kicks up the idle when the a/c clutch is engaged, so it's conveivable it might be triggering the fuel pump.
I haven't paid attention if my a/c chirp happens at idle when engine is cold since the hp pimp chirp seems to happen when warm. Actually now that I think about it, the a/c chirp happens when driving at any speed too so I tend to believe it not fuel pump related.