Weird Exhaust Sound at 1900 RPM's - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

RedlineRacer · 04-20-2003, 02:20 PM

I have this wierd exhaust sound when I rev up or change gears and my RPM's drop around 1900. It is only like this when it revs down. I thought I had a leak in my exhaust, but I looked all around and found nothing. Anyone have any ideas what it is?

hookedup240 · 04-20-2003, 02:47 PM

What does it sound like? Louder? rattle? howling? ricey? Hole?

RedlineRacer · 04-20-2003, 03:00 PM

Its hard to tell, it sounds like a little of rattling and a hole. Its hard to explain, it just sounds like crap whenever I rev up. I can't figure it out cause it only happens at that RPM.

hookedup240 · 04-20-2003, 03:08 PM

hmmm...not sure then, but my car at high rpm's i hear a rattling from the outside it think something is just loose maybe my cat or muffler.

Is there any way you can get under there and take a look at it?

And can you tell which part it is coming from back or middle of car?

Sorry bout the questions just trying to help

RedlineRacer · 04-20-2003, 03:13 PM

I tried, I leaned my head under my car and got a long poll and pushed the accelerator. I still couldn't tell where its coming from. I think it might be around my cat.

Nismos14 · 04-20-2003, 04:12 PM

99% of the time its heat sheilds check all ur heat shields. and remove them, u dont really need them n e wayz i took all mine out didnt notice any heat difference or any negative effect from it

*radhaz* · 04-20-2003, 04:42 PM

Heh, if it matters you're not the only one with this problem. You've just described pretty much what I noticed yesterday while driving through a parking garage. I've heard an exhaust system with a leak and the sound is very similar; however, the system always had the sound not when the motor was winding down.

I did a visual inspection (without removing heat shields) and havent found a crack/hole yet. I plan on getting it on a lift next weekend and giving it a more thorough go-over. Keep me posted if you isolate the problem and I'll do the same for you,

RedlineRacer · 04-20-2003, 05:59 PM

Thanks for the help. I'll try to jack up my car sometime this week and see if I find a crack anywhere.

04-20-2003, 02:20 PM	#1
RedlineRacer Zilvia FREAK! Join Date: Sep 2002 Location: Clemson, South Carolina Age: 40 Posts: 1,054 Trader Rating: (0) Feedback Score: 0 reviews	Weird Exhaust Sound at 1900 RPM's I have this wierd exhaust sound when I rev up or change gears and my RPM's drop around 1900. It is only like this when it revs down. I thought I had a leak in my exhaust, but I looked all around and found nothing. Anyone have any ideas what it is?

04-20-2003, 02:47 PM	#2
hookedup240 Zilvia FREAK! Join Date: Dec 2001 Location: NJ Age: 41 Posts: 1,149 Trader Rating: (0) Feedback Score: 0 reviews	What does it sound like? Louder? rattle? howling? ricey? Hole? __________________ 1991 240sx se 5spd - sold 2003.5 Mazdaspeed Protege

04-20-2003, 03:08 PM	#4
hookedup240 Zilvia FREAK! Join Date: Dec 2001 Location: NJ Age: 41 Posts: 1,149 Trader Rating: (0) Feedback Score: 0 reviews	hmmm...not sure then, but my car at high rpm's i hear a rattling from the outside it think something is just loose maybe my cat or muffler. Is there any way you can get under there and take a look at it? And can you tell which part it is coming from back or middle of car? Sorry bout the questions just trying to help __________________ 1991 240sx se 5spd - sold 2003.5 Mazdaspeed Protege

04-20-2003, 04:12 PM	#6
Nismos14 Zilvia FREAK! Join Date: Jun 2001 Location: New Jersey Age: 43 Posts: 1,213 Trader Rating: (0) Feedback Score: 0 reviews	99% of the time its heat sheilds check all ur heat shields. and remove them, u dont really need them n e wayz i took all mine out didnt notice any heat difference or any negative effect from it __________________ '97 maxima 5-Spd

04-20-2003, 03:00 PM	#3
RedlineRacer Zilvia FREAK! Join Date: Sep 2002 Location: Clemson, South Carolina Age: 40 Posts: 1,054 Trader Rating: (0) Feedback Score: 0 reviews	Its hard to tell, it sounds like a little of rattling and a hole. Its hard to explain, it just sounds like crap whenever I rev up. I can't figure it out cause it only happens at that RPM.

04-20-2003, 03:13 PM	#5
RedlineRacer Zilvia FREAK! Join Date: Sep 2002 Location: Clemson, South Carolina Age: 40 Posts: 1,054 Trader Rating: (0) Feedback Score: 0 reviews	I tried, I leaned my head under my car and got a long poll and pushed the accelerator. I still couldn't tell where its coming from. I think it might be around my cat.

04-20-2003, 04:42 PM	#7
radhaz Premium Member Join Date: Apr 2003 Location: SD SoCal / Jax, Fl Posts: 659 Trader Rating: (0) Feedback Score: 0 reviews	Heh, if it matters you're not the only one with this problem. You've just described pretty much what I noticed yesterday while driving through a parking garage. I've heard an exhaust system with a leak and the sound is very similar; however, the system always had the sound not when the motor was winding down. I did a visual inspection (without removing heat shields) and havent found a crack/hole yet. I plan on getting it on a lift next weekend and giving it a more thorough go-over. Keep me posted if you isolate the problem and I'll do the same for you,

04-20-2003, 05:59 PM	#8
RedlineRacer Zilvia FREAK! Join Date: Sep 2002 Location: Clemson, South Carolina Age: 40 Posts: 1,054 Trader Rating: (0) Feedback Score: 0 reviews	Thanks for the help. I'll try to jack up my car sometime this week and see if I find a crack anywhere.