Need Help!!!!!!! civic wont go over 80

[c4d2x0x]

I have a 2001 civic ex sedan. The check engine light came on and my cars engine cuts out at 4000 rpm's in any gear. i hooked up a scanner to read the code and it said somthing about my air to fuel ratio. i cleared the code and it popped back on a few miles down the road. Does anyone know what the problem is?

[hxgaser]

It could be that vtec is not engaging. Could be the clogged filter? Item no. 10 on the following chart.

[BrodyP]

Maybe ECM needs to be updated or replaced. OR Try this take your valve cover off to inspect rocker the intake side of rocker's by cyl. 4 on top of rocker ass is a 14mm bolt that blocks off a hole for oil passage for vtec., to much presure check there. Also check your oil level.

[waterboy333]

i swapped out my vtec to a non vtec and now my car does the same thing, it has something to do with the vtec i know