01 tj overrevs in idle for a short time

AmazinglySl_05_w

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Original poster
Joined
Feb 18, 2023
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1
Location
North Carolina
So I’m not very smart when it comes to car repair but I’m trying to pinpoint what’s wrong with my jeep,

Every so often when I’m driving my my manual jeep will drive normally. However it seems whenever my check engine light is on my jeep idles fine, however when my check engine light is off the keeps motor overrevs for a few seconds varying from 2k rpms to 4k rpms but after awhile stopped in idle it will calm down and idle at around 2k rpms. I had a rotted hose pipe, so I replaced that but alas that had no effect, what else could be causing my jeep to have such inconsistent overrevving?

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