so when driving around town if i give the gas a quick mild pump i can hear this short super high pitched whistle. im wondering if my 00' L could have a loose spark plug ready to pop.

 

so check them

 

thats a darn good idea Mike, to be honest with ya. it had crossed my mind once or twice. but from sniffing around very little it looks like they're not the easiest to check/change.

 

Mine whistles or has whislted ever since i put my nx nozzle on.

 

Belt slip squeal....maybe?

 

Do you have an after market throttle body?
Also check out our twin cities SVTOA site . www.svtoatc.com

 

i've had it since putting on my intake kit. i just think she's whislting a little tune for me. nothing to worry about.

 

well i did mess around with a 90mm MAF and my air box so i guess t could be that. but this whistle sounds naughty not nice

 

"Whistles" that suddenly show up are usually "air leaks" somewhere. A crack in a hose or line, hose loose on it's fitting, a leaking gasket, etc. I'd check every hose and line you get you hands on. Leaking gaskets on throttle bodies can do this too.

 

If it's a whistle that occurs only around 2000 - 2500 RPM and it sounds like its coming from behind the dash or just behind the firewall it's probably one of the heater hoses from the engine to the firewall. Just had mine changed and the problem is solved. Good luck.
,Marc

 

My JLP intake whistles around 2400 RPM's but doeant bother me.

 

 

Its that woooo wooooo...

 

mine whistled because of my cervini ram air hood. the inserts in the hood would whistle over 37 mph and drive me crazy.


(not my truck, just an example)