I'm hearing a "tea kettle" type high pitch noise between 2k-3k RPM when I'm accelerating under load in 3rd, 4th, and 5th gear. I can control the whistle with the throttle meaning when it starts to whistle, if I give more throttle it goes away or less it goes away. It's right in the sweet spot of operating speed when going over 40 mph. There's no whistle when coasting at speed or when revving in neutral, only when under load. I don't have a throttle body spacer or an aftermarket intake. Could it be a vacuum leak or intake/exhaust leak even if it doesn't happen when not under load. It idles very smooth so I didn't think it was a vacuum leak but I'm not sure. I've also checked the drive shafts and they don't wiggle or have any play but I'm not sure if that means they could still need grease and if that could be the issue.
I'm fairly new to working on Jeeps so anyone who has experienced something similar and has advice or ideas, I would really appreciate it!
The Jeep is a 2003 with 51k miles
Thank you in advance!
I'm fairly new to working on Jeeps so anyone who has experienced something similar and has advice or ideas, I would really appreciate it!
The Jeep is a 2003 with 51k miles
Thank you in advance!