My dodge recently started making a noise, its hard to explain. but its kind of a whining not whistle. kind of a power steering type noise but i have no clue... it makes the noise with rpm. i increase the rpm and the noise goes a little louder with it from about 1000-2300 then after it shifts to second the sound is lower. again till reaching about 2300 till rpm goes up and shifts to 3rd and the noise isnt really there anymore. you can put it in netral and press on the gas and bring rpm up to 2000 or so and the noise is heard. i guess id say the noise is an errrrrrr at 1500 an you press gas till 2300 rpm and its like eeerrrrrRRRRRR getting louder lol sorry for my eplanation
also it throws the code cylinder 6 misfire on and off even the it never really is misfiring. truck has 163,000mi i have installed a rebuilt tranny, new waterpump, new sparkplug wires, new sparkplugs and also new rotor an distributer cap .