It's been doing this for a while now. Every once and a while I hear a rattle coming from the passenger side underneath the car. Especially when I go in between 2 cars (when your exhaust echoes). Is this my cat. conv. going bad. I'd appreciate any help on this because it is driving me crazy!

 

https://www.thirdgen.org/messgboard/...ML/003366.html

i'll bet its ur cat, just happenend to me

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1989 G92 Iroc 305 5spd 3.45 posi
mods: airfoil, MAF screens, flowmaster 80's, K&N's, TES headers, Catco hi flow cats (dual of course).

Other:
Tints, Eclipse CD8051 HU, Nakamichi pa504 (50x4 watts), Polk 4x6's, Polk 6x9's, Xtant 1001x amp (1000 watts), 2 xtant X-series 12 inch subs= people know i'm comin' a block away

Just ordered these (at midnight b/c i'm an idiot): Taylor Spiro Pros(8mm), and an MSD Blaster coil

Soon= ram air, ported intake, cam, ignition

 

Thanks, maybe now I can drive around with a little peace & quiet(yeah, right )

 

on your cat, there is an oxygen sensor tube that plugs in about the middle of the convertor. Sometimes that tube can come loose and slap against the side of your cat, causing a rattling sound. This happened to me. To fix this (if thats your problem), get some rivet clamps and bond the tube to the side of your cat. The rattle could also be worn out baffles in your muffler...

 

Heat shield on the Cat,


tools used in removal of shield:

glove,
Wrench
hockey stick
and pulling on it....


dont ask, but it worked,

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91 FireBird 305 V-8
Edelbrock Catback, Custom Alarm. Fourth Gen Console. i have six cupholders. all for starbucks!
Go|)Created The Earth, And Then Turned Up The Bass.
Here's My Audio Install!

"Honda's FOR ME TO POOP ON!" -Triumph...