'Lapping' noise?
#1
PUSHER ROBOT
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'Lapping' noise?
I've been having a hard time tracking down what can only be described as a lapping noise coming from the engine bay under idle. It seems like it would be most likely a belt but I've checked and tension seems fine and no damage to any belts.
Anyone have any ideas? I can't hear the lapping under load but that might just be due to the exhaust note. My MPG has also dropped considerably. I'm used to having a CEL due to a straight pipe, but I'll be getting the codes pulled to see if there's anything else.
In addition, I also have a very high pitched whine coming from the engine bay 80% of the time, mostly during cold start / warmup period. Its probably an electric motor or the alternator.. Anything I should check in to on that?
Anyone have any ideas? I can't hear the lapping under load but that might just be due to the exhaust note. My MPG has also dropped considerably. I'm used to having a CEL due to a straight pipe, but I'll be getting the codes pulled to see if there's anything else.
In addition, I also have a very high pitched whine coming from the engine bay 80% of the time, mostly during cold start / warmup period. Its probably an electric motor or the alternator.. Anything I should check in to on that?
#4
幹他媽!
mine just starting doing this noise too... it's not the whistle noise of the rotary... it's some other type of swooshing sound that pulsates:
"shhh shhh shhh shhh" sounding like that...
it happens intermittently on my car- even when it's warm. i'm not sure what it is either and wonder if anyone knows what this is or if it's something i need to worry about.
any ideas?
"shhh shhh shhh shhh" sounding like that...
it happens intermittently on my car- even when it's warm. i'm not sure what it is either and wonder if anyone knows what this is or if it's something i need to worry about.
any ideas?
#5
sofa king
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I was wondering if that sound was my fans. Noticed it around 40k miles. Couldn't be temp related because I heard it at 60 degrees F; it's 20F now and I still hear it.
Subscribing for answers.
Subscribing for answers.
#7
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It probably is a good idea to check your plug wire connections. I had a kind of loud "ch ch ch" sound a while ago, and I found that the plug wire boots were not firmly on the spark plugs. Pushed everything in firmly and it was fine.
#10
The lapping also sounds like leaves rustling. It happens when you first start your car and, while the car is stationary and in neutral, gently press the accelerator and then let it idle. The lapping/rustling leaves could actually be water swishing.
Could it be the water pump?
Could it be the water pump?
#12
幹他媽!
seriously guys, we are asking about & trying to discuss a legitimate problem & get help from other club members with knowledge on our issue... If u really don't have constructive info to contribute then please kindly save your comments for the lounge or other threads....
Thanks & much appreciated...
Thanks & much appreciated...
#14
ლ(ಠ益ಠლ)
iTrader: (4)
The lapping also sounds like leaves rustling. It happens when you first start your car and, while the car is stationary and in neutral, gently press the accelerator and then let it idle. The lapping/rustling leaves could actually be water swishing.
Could it be the water pump?
Could it be the water pump?
#15
And the heater core somehow makes a rustling leaves sound? Are you sure? Seriously.
I think it's more of a water jiggling/swishing sound. To get the sound, gently press the accelerator, and you will see that the sound is concomitant with accelerator. In this case, could it be the water pump moving water around?
I think it's more of a water jiggling/swishing sound. To get the sound, gently press the accelerator, and you will see that the sound is concomitant with accelerator. In this case, could it be the water pump moving water around?
#16
Administrator
i dont have a lapping sound. but from the description,
trying to diagnose over the internet, without being in the car thats what id say. if they are all coming from the right side.
but i also believed there is good probability that you "Potentiated" , Detrich and worm are each talking about something different
swooshing sound that pulsates:
"shhh shhh shhh shhh" sounding like that...
"shhh shhh shhh shhh" sounding like that...
gently press the accelerator and then let it idle. The lapping/rustling leaves could actually be water swishing.
trying to diagnose over the internet, without being in the car thats what id say. if they are all coming from the right side.
but i also believed there is good probability that you "Potentiated" , Detrich and worm are each talking about something different
#17
幹他媽!
Hmm... Well mine for sure doesn't sound like fluid or liquid motion... The sound I'm getting matches what the thread author described, which is y I sounded in, as I'm trying to decide whether this issue requires a visit to the dealer or if it's something else... Again it kinds sounds like something rubbing gently against a conveyer belt & pulsating during engine idle like "shh... shhh...shhh.". It's not super loud but just enough where it's noticeable.
Thanks for sounding in.. Keep the comments going. Hopefully someone will know exactly what this is...
Thanks for sounding in.. Keep the comments going. Hopefully someone will know exactly what this is...
#21
幹他媽!
alrighty... i made an app't to have this looked at this wednesday. will post what i find out afterwards- though it doesn't seem like too many ppl really are following this thread anymore
#22
If it is a "whistle", check your three breather hoses with the plastic elbows connected to the intake flex duct. Those are prone to becoming brittle/cracking and the "whistling" may be the oil injection nozzle breather hose. Based on limited information I would guess this to be the problem as you have poor fuel economy as a seeming related symptom.
Leaks in these hoses cause erratic MAF sensor readings and the PCM doesn't "like" it.
Leaks in these hoses cause erratic MAF sensor readings and the PCM doesn't "like" it.
#25
Yeah, Detrich didn't appreciate my sense of humor:
seriously guys, we are asking about & trying to discuss a legitimate problem & get help from other club members with knowledge on our issue... If u really don't have constructive info to contribute then please kindly save your comments for the lounge or other threads....
Thanks & much appreciated...
Thanks & much appreciated...