So my brothers ram (1997 5.2 2wd) has the loudest whistle coming from the engine. its a constant high pitched noise that sounds almost like a vac leak. maybe it is. so far we've checked all the accessories (alt, pump, ect) by removing the serpentine, checked thoroughly for vacuum leaks, and looked at the throttle body. So far NOTHING. The truck runs fine and all, but I feel this is definitely something to take care of soon. Any ideas? thanks

 

Mine sounds annoying since I put the cold air intake on.

 

Vacuum leak.


FelPro #60038

 

Mine is nice and loud when I first start it because theres no air box gasket like that other guy said, and the air cleaner is beat to crap and is full of cracks.

 

thanks for the replies. we removed the air cleaner and all that, so its definately not that. I have a COI and its no wheres near as loud as this noise.

 

My 98 was doing that when I bought it a year ago, I changed the intake gasket becuase of the oil in it. Never thought about it but I haven't heard it since. I just bought a 2000 ram that has a very loud vacuum sound in the left valve cover. The pvc was going crazy. It also has oil in the intake. So I am going to probably change the gasket eventually. Both trucks ran fine with the noise.

 

How'd you check thoroughly for vacuum leaks? Spray carb cleaner around the intakes vacuum lines, make sure the gasket on the air cleaner to TB is secured correctly, make sure the 4 TB bolts are torqued down. If you've ever removed the TB and reused the old gasket...change it out for a new one. The gasket must be changed every time.