linux4noobs

I am having trouble with my car making a loud humming noise between 800-1000 RPMs. I intitialy thought it was a bad TPS or throttle body. So I replaced the throttle body and TPS and the noise went away for about a day, then came back. I must be close because it actually went away for a day. 800-1000 RPM is roughly 5-20 miles an hour when it makes that noise. It does do it on hot days also if that matters. I guess I should add that its louder on hot days. I replced the throttle body with factory one. It actually runs a lot smoother though. This all started when I was street racing. I would slam on the gas then let go then slam it again to change the gears as it is an automatic. does that make sense? then after the race I went home and was about to put it in park and then the noise started. its a loud humming/buzzing noise. please threads gods bless me with a miracle.

Ford Mustang
2006 V6 4.0 (I think)
red with a dented hood
Flood edition (passenger side leak) lol

linux4noobs

on a side note. I dont have to be moving for it to make that noise. I can actually just idle and the noise will be there between 800-1000 RPM. sometimes if I drive it for 20 minutes it will go away for that drive, whether its a 20 minute drive or 5 minute drive, sometimes.

linux4noobs

on another side note. I can turn the heater and A/C off and on and it still doesnt affect the humming whining noise.

Nuke

It's humming because it doesn't know the words.

Can you get someone to poke their head around the engine compartment and all around the chassis for a better idea of where it's coming from? The 800 RPM range is a bit of a notorious place on these cars for resonant frequencies and have been traced to exhaust and heat shields but without some more info and possibly a sound clip, it's hard to tell.

linux4noobs

Okay I got it answered and fixed.

It was a grinding humming noise that I was 100% sure it was coming from the transmission. Guess what it wasnt. My battery died and I replaced it, while I did that i decided to replace the alternator and there lied the culprit. The alternator was resonating a souns through the entire car that sounded like a gear was slipping at idle or running between 800-1100 RPM. Replaced them both and now i trust my car again. I replaced the throttle body and that cleared a lot of my problems also. Well if you hear a sound like that and I also had the check charging systems lights on, i chose to replace the battery and alt. im good to go and so happy.