ive searched and searched..but most people never say what it was when they discover the solution to the problem. ive seen many of these bogging threads but it always seems like the vtec still works after the bog. heres the deal. i have a 96 accord with an h22a. it was converted to and 0bd2 engine and i am running the ever so rare 1996 obd2 p13. the car ran perfect for 6 months after the swap...than it began to lose pwer near the high rpms in vtec. its like it was pulling awsome...and than god dropped a boulder in my trunk. it would only hapopen if i was driving for a long while. slowly it got worse and worse and now it bogs through the entire tach...and vtec doesnt work..fuel cut off kicks in. the only check enige light is for the evap. Ive taken the car to many people over the past 8 MONTHS..AND NOBODY CAN FIX THE DAMN THING!

 

Check ur grounds GOOD... especially ur ecu ground, I had a problem like this for a year... Up at higher rpms the car would start to lose power and early rev limit and Vtec would only work sometimes, my ecu ground was loose. So make sure that's tight. Cause if u're not getting a cel and ur vtec's not workin theres only a few things it is.

 

well its not the knock sensor..i swapped that. thanks for the advice..ill check the ecu ground. where are some other grounds at besides the two to the very right of the valve cover?

 

well. the grounds were not it...any ideas?

 

man i have almost the same prob! mine bogs for a lil bit just as vtec kicks in and than it kinda feels like fluctuating power.