Ok i wanna start by saying NO it is not a belt squeak and NO it is not a bearing in anything. it sounds more like its coming from the back area of the engine bay, maybe a little more towards the dr side.. its kinda hard to tell thiough. im pretty sure its a vacuum leak of some kind cause when i give it a little gas it stops. its actually like a really high drawn out beeeeeeeep noise. ive checked most of the vacuum lines up top and where i can easily see or reach. does anyone have any idea what this noise is? could there be other vacuum lines or areas i cant see or reach somewhere? PLEASE HELP!!!!! this is the most annoying noise in the world! i stopped at a red light the other day and an old man rolled up his window lol! people stare at me and i know its not cause of the sexy driver or kick *** ride. its hurting my relationship with my jeep sadly.

 

I would check the gasket between the intake and head. It could also be a very small exhaust leak. Easiest way to check for the intake leak would be to use a can of either or an unlit propane torch and use it around the gasket, see if your idle changes.

 

Aftermarket air intake with a cone filter?

 

nope all stock stuff ^.. i was thinking it could be the intake gasket too. i figure if its the exhaust it would flutter more but this it a good steady loud friggin whistle. ill check all that in the AM i plan on doing some wrenching around tomorrow anyway

 

+1 for another silver jeep btw!

 

Silver 2000 Cherokees are the best.

 

get a can of carb cleaner and while its runnin spray alittle around vacuum ports and the intake flange. if the idle goes up look there for a leak. and if you cant find any vacuum leaks it could actually be a dirty throttle plate and or iac. ive seen fords do it

 

x2....

 

what does x2 mean? yea after i posted that i saw you said he same thing. thats what i get for scrollin too fast.

 

pretty much means "i agree"; I was using it for sarcastic effect, of course...

 

x2 = times too. = me also

throttle plate? where it mounts to the intake? or the butterfly valve in the TB? the previous owner replaced the TB thinkin it would help but no candy.. so now i have a spare. ill do the carb cleaner thing tomorrow. im gonna find this if it kills me cause if i dont it will anyway lol

 

yea check the throttle body gaskets and make sure the bolts are tight. if that all looks good take off the inlet tube a give the throttle plate itself a good cleaning. i like to save my old toothbrushes and use them with some carb cleaner. the toothbrush is cool cause you can use one hand to hold the throttle open and the other to scrub. it will be hard to start after cleaning. crank it over and press the throttle thatll help.



gotcha im new to the whole fourms thing. thanks

 

I have this same issue and I agree, its annoying as heck..happens when i accelerate and when I turn it off. Hope you find the problem soon.

 

88mj mine kinda does the opposite.. i can go out side and fire it up and it sounds perfectly normal for like 3 mins but then after its warm this beeeeeeeeeeeep kicks in. engine sound doesnt change or anything and the fans were already on. then i can grab the throttle linkage and barely give it any gas and it quits, goes away like nothin ever happened

 

same thing was happening to one of my friends. The exhaust manifold gasket had a crack in it and that caused the "whistle".