Generation III Internal Engine 1997-2006 LS1 | LS6
Sponsored by:
Sponsored by:

Cold Start Engine Noise

Thread Tools
 
Search this Thread
 
Old 03-12-2013, 12:19 PM
  #1  
Teching In
Thread Starter
iTrader: (1)
 
Maxx_Z06's Avatar
 
Join Date: Nov 2012
Location: Houston TX
Posts: 41
Received 0 Likes on 0 Posts

Default Cold Start Engine Noise

My 01Z 80k miles as of 2 days ago has been making a weird sound upon starting it on a cold start. The noise is nothing of the taping or knocking sort but kinda like a hissing or air sound coming from the serpentine belt area. After engine warms up a bit the sound goes away. All fluids are normal, no leaks, no trouble codes. The car operates flawlessly, what drives me crazy is that damn sound at the start!

What is it? Just trying to play it on the safe side wouldn't want it to cost me more money down the road. Any idea guys?
Old 03-12-2013, 12:30 PM
  #2  
TECH Senior Member
iTrader: (9)
 
Tainted's Avatar
 
Join Date: Mar 2006
Location: Indianapolis
Posts: 8,425
Likes: 0
Received 2 Likes on 2 Posts
Default

are you sure youve got no pinholes in any of your hoses? i just had that happen on my nissan, drove me goddamn crazy trying to find it.
Old 03-12-2013, 12:32 PM
  #3  
Teching In
Thread Starter
iTrader: (1)
 
Maxx_Z06's Avatar
 
Join Date: Nov 2012
Location: Houston TX
Posts: 41
Received 0 Likes on 0 Posts

Default

I'll take a look this afternoon when i get home but i did fully go through the belt. No signs of any cracks or damage. Odd how the sound will go away after the car has warmed up a little bit.
Old 03-12-2013, 12:34 PM
  #4  
TECH Senior Member
iTrader: (9)
 
Tainted's Avatar
 
Join Date: Mar 2006
Location: Indianapolis
Posts: 8,425
Likes: 0
Received 2 Likes on 2 Posts
Default

also check you pcv valve. it tends to dryrot and crack causing a small leak. its down by your TB on the right side



Quick Reply: Cold Start Engine Noise



All times are GMT -5. The time now is 03:12 AM.