1999 4.0 aw4 np231 - Searched but couldn't find this exact instance
I installed a new OEM style header today and when I turned the jeep on for the first time it immediately revved up heading towards redline. I shut it off instantly and inspected for anything disconnected. Everything looked fine so I restarted and it began revving again, but I shut it down before it could get above 3k.
From what I've read, high idle can be attributed to a vacuum leak. My issue was as if the throttle was 100% open.
Anyone?:helpme:
I installed a new OEM style header today and when I turned the jeep on for the first time it immediately revved up heading towards redline. I shut it off instantly and inspected for anything disconnected. Everything looked fine so I restarted and it began revving again, but I shut it down before it could get above 3k.
From what I've read, high idle can be attributed to a vacuum leak. My issue was as if the throttle was 100% open.
Anyone?:helpme: