Couple Minor Issues In One

[SnakeS]

Hey

 

I have a 98 pathfinder and when i start up put it in D and drive forward after about 5 to 10 secs while moving forward there is like a sound of something engaging. almost like the hubs locking but it is in 2wd. its not a clunk but a smooth almost air or fluid sound. just wondering if this was normal. My other question is i suspect my muffler is rusted out but just want to make sure. On heavy acceleration it makes like a ricer muffler sound and when you let off the gas at speeds above 80km/h there is a very loud grinding/rubbing sound. I've tried to reproduce the sound in the driveway but it only does it under those circumstances, also if you decelerate with a little bit of gas it wont make the sound. Hitting the muffler with a rubber hammer doesn't do it either. Just want to make sure because the exhaust piece with the muffler is like 280 here and the junkyards don't have any. Thanks again for your help.

[unccpathfinder]

the click you speak of sounds maybe like the a/c compressor kicking on or off...

[SnakeS]

yeah actually that sounds like it but its always off, maybe it's just cycling?

[Vsicks Pathy]

Could also be the clutch fan catching up to the extra RPMs.

[SnakeS]

in any case it doesn't sound like something is wrong just worried about the exhaust it drives me crazy! is $280 seem high to you for the muffler?