04 ep3 k20 engine won't rev over 4k?

[ep3_civic_si]

Kinda had a feeling about that, thanks civicep3 ill try that!

[cvicep3]

No problem. It's kinda pain in the ass to install the new one and be careful don't tight too much or you ended up breaking the bolts. I happened to couple guys on here.

[Waldo129]

I had this same exact problem. I was on my way home and I started to take off from a red light and it wouldn't rev past 4k. I got it home, turned it off. Then went back out an hour later and drove it again, no problems. That was almost 10K miles ago too, weird...