I'm hearing a rattle under acceleration.
#1
I'm hearing a rattle under acceleration.
Hey guys I need your help diagnosing this problem. Every time under moderate acceleration I hear a rattle (sounds also like a tag flapping in the wind) and I feel a little vibration through the pedal. But it’s only heard at a certain area when I press down the gas pedal. I’ve always heard it but Its never really bothered me until now. Any ideas where I should look first?
Thanks
Thanks
#4
Originally Posted by friedbacon
I have the same thing happen on my 2000 maxima too. I thought it was a loose exhaust/headshield but everything seems tight. It usually happens at 1500-2000rpm. The sound is gone after 2500rpm.
#7
Could be the y-pipe. You have stock or aftermarket y-pipe? Judging by the people responding with the same noise most of you have stock y-pipes. Usually its the aftermarket y-pipes that tend to cause a "rattle, bees in a can" type noise. It only happens during certain acceleration or RPM's. Does your noise resemble a rattle, bees in a can type? If so...check the flex section of the y-pipe, probably damaged or restriction exhaust flow.
#11
Yep.... my car has the similar issue... I dun hear a rattle though so to speak, but the car gives an increased vibration from the engine right at about 1800rpm. I can feel it in the pedals and steering wheel. I suspect that for the car's structure, that would be the "resonant" frequency. Anyone to back me up on this?
![Smilie](https://maxima.org/forums/images/smilies/smile.gif)
#12
My car started this last week on the first roadtest after I changed from B&G to Progress springs.(slightly lower front) Rechecked install-ok. Thought it may be due to different angle on cv joints or something. Anyone had their car to dealer for this? Anyone on stock suspension have it?
#13
Hmm
It's interesting how everyone's having similar problem. I too realized that when I start from rest. The sound is actually very quiet so I couldnt judge if its still there at higher speed. But I dont think I've heard it before. It just started recently.
#16
My rattle was fixed under warranty. Found out that the front and rear screens of my precats had deterioated, and shot all that debris down the exhaust pipe. This was the cause of my rattle, and my loss of power. Dealership ordered new precats and o2 sensors for me. No more rattle, but I would have just gotten headers if i had the money.
#18
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Originally Posted by MaximaGT-R
i have the same problem i took it the exhaust shop and we found out the the rattle was from the front catalyst converter the little filter on the inside of it is loose
My rattle was fixed under warranty. Found out that the front and rear screens of my precats had deterioated, and shot all that debris down the exhaust pipe. This was the cause of my rattle, and my loss of power. Dealership ordered new precats and o2 sensors for me. No more rattle, but I would have just gotten headers if i had the money.
i guess i now know--or so i hope--what this crap is...
#19
Originally Posted by Deckdout2
My rattle was fixed under warranty. Found out that the front and rear screens of my precats had deterioated, and shot all that debris down the exhaust pipe. This was the cause of my rattle, and my loss of power. Dealership ordered new precats and o2 sensors for me. No more rattle, but I would have just gotten headers if i had the money.
#20
Originally Posted by joebangaa
did you have a CEL/SES??
i guess i now know--or so i hope--what this crap is...
i guess i now know--or so i hope--what this crap is...
#21
Originally Posted by GS465
Very interesting! I did not have this rattle noise before i visited a dealer for flex pipe replacement. When i drove off - it started! I went back but to prove to them that they are the cause if it was absolutely impossible. Good car horrible service at the dealer! In my case it is definitely related to the flex pipe and the O2 sensor in it...... ( event thought both are OEM and brand new….)
#22
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hmm.. i have always suspected the precats as the culprit, but i've never popped a CEL/SES. is it possible that the screens in my precats are all messed up w/o affected the O2 sensor?? i'm assuming your CEL/SES was due to improper O2 sensor reading?
maybe i should just get headers lol
maybe i should just get headers lol
#23
I have the EXACT same problem...
http://forums.maxima.org/showthread.php?t=468237
this is the thread i started 2 days ago describing my symptoms. I am starting to think it might be my VIAS. It might be broken and when the engine is under load (creates some vaccum) the are going into the maniforld rattles the VIAS's butterfly valves. Plus i have a CAI so the sound of everything that happens behind my throttle body is very much audible. I am gonna take my VIAS apart tommorow and see wtf is up with it. I would have done it this week, but i need a car to drive to work, so weekend it is. Let me know what u guys think. thanks.
http://forums.maxima.org/showthread.php?t=468237
this is the thread i started 2 days ago describing my symptoms. I am starting to think it might be my VIAS. It might be broken and when the engine is under load (creates some vaccum) the are going into the maniforld rattles the VIAS's butterfly valves. Plus i have a CAI so the sound of everything that happens behind my throttle body is very much audible. I am gonna take my VIAS apart tommorow and see wtf is up with it. I would have done it this week, but i need a car to drive to work, so weekend it is. Let me know what u guys think. thanks.
#27
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Originally Posted by FriscoMaxima
I have the EXACT same problem...
http://forums.maxima.org/showthread.php?t=468237
this is the thread i started 2 days ago describing my symptoms. I am starting to think it might be my VIAS. It might be broken and when the engine is under load (creates some vaccum) the are going into the maniforld rattles the VIAS's butterfly valves. Plus i have a CAI so the sound of everything that happens behind my throttle body is very much audible. I am gonna take my VIAS apart tommorow and see wtf is up with it. I would have done it this week, but i need a car to drive to work, so weekend it is. Let me know what u guys think. thanks.
http://forums.maxima.org/showthread.php?t=468237
this is the thread i started 2 days ago describing my symptoms. I am starting to think it might be my VIAS. It might be broken and when the engine is under load (creates some vaccum) the are going into the maniforld rattles the VIAS's butterfly valves. Plus i have a CAI so the sound of everything that happens behind my throttle body is very much audible. I am gonna take my VIAS apart tommorow and see wtf is up with it. I would have done it this week, but i need a car to drive to work, so weekend it is. Let me know what u guys think. thanks.
![chuckle](https://maxima.org/forums/images/smilies/chuckle.gif)
#29
i had the same rattle as well...i know everyone says its not mod related...but i had to take my berk intake off to bring my car to the dealer for trans problems and as soon as i took it off the noise stopped...it originally had the same symptoms and everything including feeling it in the pedal...anyway thants how i fixed mine
#30
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Originally Posted by lildeigo31
Hey check the gas you are using. Try a different gas station or go up to a better octane. I had the same pinging type noise and it could be the gas if it is the same pinging type noise I had. Good luck
for the last time, this is not a pinging/knocking issue
#31
me three
Im bumping to get in on this.
I had the stealership check out my heat shield and they found nothing loose about it(no surprise here).
And when I took him for a spin around the block, I put the car in 1st and rolled up a hill to let him hear the rattle as my engine revved up.
Unfortunately, he was probably deaf and I couldnt open the windows b/c it was frickin freezing. So, he concludes that he heard nothing and had no idea what the problem could have been(thanks for nothing).
I will probably go away from stealership and see what another shop might say, but any other ideas you .org people have would be very helpful.
(ATM, I have a larger problem to deal with regarding my avon tires and floor board vibrations at >65mph that prevent me from speeding)
I had the stealership check out my heat shield and they found nothing loose about it(no surprise here).
And when I took him for a spin around the block, I put the car in 1st and rolled up a hill to let him hear the rattle as my engine revved up.
Unfortunately, he was probably deaf and I couldnt open the windows b/c it was frickin freezing. So, he concludes that he heard nothing and had no idea what the problem could have been(thanks for nothing).
I will probably go away from stealership and see what another shop might say, but any other ideas you .org people have would be very helpful.
(ATM, I have a larger problem to deal with regarding my avon tires and floor board vibrations at >65mph that prevent me from speeding)
#32
Well, i took apart my VIAS about 30 mn ago, and guess what, they are broken... no surprise... but i am about to go "JB WELD" it up right now and leave it till tommorow morning. i will update you on this matter. thanks.
#33
Originally Posted by joebangaa
hmm.. i have always suspected the precats as the culprit, but i've never popped a CEL/SES. is it possible that the screens in my precats are all messed up w/o affected the O2 sensor?? i'm assuming your CEL/SES was due to improper O2 sensor reading?
maybe i should just get headers lol
maybe i should just get headers lol
Headers should have come on the car stock if you ask me.
#36
Originally Posted by Gongster
I also get this rattle at about 1500RPM. My car is still under warranty so I will have the dealership look at it when I have a chance.
#37
Originally Posted by FriscoMaxima
could you do it sometime soon because i just need someone to diagnose wtf that rattle is, i am pretty sure i'll be able to fix it myself. thanks