I agree sounds like a vacuum leak Many individuals report a hissing. You can unplug one hose at a time and plug the manifold side of where the hose goes.
How to Find a Vacuum Leak: 12 Steps (with Pictures) - wikiHow
You use a dodge vacuum hose routing diagram by comparing the visual layout to the actual hoses under your hood
Audible hiss or whistle —a classic vacuum leak sound, most obvious at idle near the intake manifold or hoses
Join us as we explore the common culprits behind whistling sounds, including vacuum leaks, air intake issues, and even. I once used a rubber tube to trace the leak under the hood of my sedan, which pinpointed a small cracked vacuum hose. Vacuum leaks are a common cause of whistling noises heard from under your vehicle’s hood. Got a new sound in the engine compartment
Over time, rubber breaks down, especially in the extremely hot conditions, under the hood and under the truck near the. Got a 02 dodge ram 1500, 3.7 v6 2wd it’s a 5 speed manual, 261xxx miles on it Hey all, i seem to be getting a high pitched whistling noise from under my hood at various throttle positions
So finished putting the 4.7 back together and first start up i get a high idle and what sounds like a pretty large vacuum.
Had severe vacuum issues, traced lines, installed a vac canister (helped a lot, but not cured), new plenum and manifold. I have got some vacuum line issues with my 96 ram 1500 4x4 5.9 (218000 miles) I broke the vent selector switch (feet,. Common causes when there is a hissing noise coming from the engine under the hood.
Engine noise diagnostic you hear a strange sound coming from under the hood—what can it be?. Vacuum leaks often produce distinct sounds that can indicate the presence of an issue
