My ITR drives fine but anytime I try to go into VTEC and pass 5600RPM the car breaks up, oil is fine, no check engine light, plugs wires cap rotor new. I can also put it in neutral and rev fine but while I am driving this problem occurs. Any help would be appreciated.

 

my 01 itr did that to me,,was the coil going bad..drove great till vtec.then would break up...new coil problem solved...g/l

 

more than likely coil or igniter unfortunately common problem - good luck

 

good luck with this....my car is doing the same thing...changed the ignitor/ICM and even put a new distributor on it...same thing...tried a different ECU same thing...unhooked vtec sol. ran perfect all the way through the RPMS...if you fix yours please lmk what it was...

 

I will try a new coil today and let you guys know. I am also thinking its something mechanical in the rockers assembly, that the machine shop assembled incorrectly. Cause the car will rev up fine but on load it will break up at 5600RPM.

 

unhook the vtec sol. and see how it works then...

 

Ok, well its not the VTEC solenoid its not the coil. Its definitely something in the head mechanically. I just have to figure out what in the head will stop VTEC from coming on. It has to be something in the rocker assembly, if anyone has any idea please hit me up.

 

If anyone knows what in the head will prevent VTEC from coming on, let me know.

 

the vtec sol., the vtec pressure switch,the knock sensor(wich is in the block)....there are many different things that will prevent Vtec from engaging

 

Type R dont have a pressure switch, I had the head done over and I am sure the rockers and assembled incorrectly. I will check in a bit