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Discussion Starter · #1 ·
Driving an 03 rsx and it seems to have a problem with the rpms. I accelerate fine until i reach the 3000-4000 and it starts bouncing up and down between them, a friend of mine told me it’s the rev limiter but i’m not sure. If anyone knows anything it’d be appreciated.
 

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Have you recently messed with your intake? (put in a CAI or SRI, etc).
I had this problem once after installing my CAI. Eventually, I got an engine code that point me in the right direction. Turns out I messed up the IMRC. It apparently messes with the air pressure valve in relation to RPMs. Can't seem to find it on the AutoZone site, but it looked like this:
568686


I believe there may be other sensors related to the intake that you can check if that doesn't work. Good luck.
 

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2002 Acura RSX Base
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Like the other person said, it could be an IMRC or IACV that needs to be replaced. If you don’t feel like replacing the parts, you could try spraying your IACV with brake fluid, and see if that will clear anything up. If the check engine is on, i’d get it checked out, and see if it is caused by one of the things i stated.
 
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