01 Cherokee Sport.
4.0 L6, stock.
When I bought my XJ a year ago, I noticed a quiet whistling sound at about 1/3 throttle, the sound isn't audible at any other throttle position. I thought nothing of it at that time, but now it's getting louder and annoying, I also have a CEL, but that's been on since I got the truck.
My educated guess is that an injector seal is bad, but usually, it's a loud whistle at IDLE, which is not the case here. The CEL is on due to an Evap issue (surprise surprise am I right?) and I'm wondering if the intake pressure sensor is tripping due to a bad injector seal.
It's pretty self-explanatory, I've just been working to fix the little issues and this one is next on the list, and I would post it here to see if anyone else had this issue and fixed it somehow.
4.0 L6, stock.
When I bought my XJ a year ago, I noticed a quiet whistling sound at about 1/3 throttle, the sound isn't audible at any other throttle position. I thought nothing of it at that time, but now it's getting louder and annoying, I also have a CEL, but that's been on since I got the truck.
My educated guess is that an injector seal is bad, but usually, it's a loud whistle at IDLE, which is not the case here. The CEL is on due to an Evap issue (surprise surprise am I right?) and I'm wondering if the intake pressure sensor is tripping due to a bad injector seal.
It's pretty self-explanatory, I've just been working to fix the little issues and this one is next on the list, and I would post it here to see if anyone else had this issue and fixed it somehow.