At about 5400 rpm while driving vtec engages and causes the car to bog,hesitate,etc... but does not stall! Any ideas?

 

Yhea, well let me explain a bit the concept here: allmost any question found an answer. Only you need to do a bit your self to get the answer.
now the only thing WE want to know is your setup, then we will be able to do something.
what car, wich year, wich engine, wich mods etc etc etc.
See ya soon

 

well, it's a b16a and i have the computer for it so no vtec controller is required, I have a code 9 showing on the computer and i have been told it'd the distributer, is this true???

 

check your oil level and spark plugs its a start

 

are you doing it while the engine is still cold?

 

Hmm... VTEC is engauged by two reference points: oil pressure and engine temperature. Also, some codes will disengauge VTEC as well.

Is this a recent problem? What have you done to the car recently that would cause this? Just back track everything!

 

Code 9 is No. 1 cylinder position sensor. It's located on the distributor. Solve that problem first and then worry about the vtec issue later if it's still going on

 

Are there any other problems that could cause vtec not to engage (non-code related)? I have a b16 in my 90 hatch and the pw0 ecu throws a code (vtec solenoid), but the solenoid and wiring are checked and fine. The engine "coughed" every once in a while. Replaced the ecu with a pm6 reprogrammed by zdyne (more aggressive fuel, disable 2nd O2) and the code goes away. Vtec still doesnt engage but the car runs worse ("coughs" every 1/5 mile or so). Plugs, wires, dizzy cap replaced during swap. I used the dizzy cap from a 90 teg, was that a bad decision? Could anything like timing/ignition stop vtec from engaging?