So I replaced my vtec solenoid because It went bad. Now with the new one still wouldnt hit vtec so I hooked up a vafc2 now It hits vtec but is still throwing code 21..

Any ideas???

 

any ideas??

 

what kind of car? what ecu, engine, etc?

 

91 da integra b16 pr3 ecu

 

did you reset the ecu?

 

Ive tried that!!!

 

I just have no idea why it will not hit vtec without the vtec controller..

 

bad pin on the ecu?

 

Nope all of them are fine.

 

how'd you go about diagnosing your problem?
did you check the wiring?
are you sure the replacement v-tec solenoid is good?
did you clean the screen and replace the o-ring?
how is the vafc wired is it twisted and taped or soldered and wrapped?

 

Originally car was throwing cel code 21 which is for vtec solenoid..So then we try my friends ecu still wont hit vtec.. So I replace my vtec solenoid and still not working then try hooking the other ecu back up still wont work.... Finally we end up wiring up this old vafc2 I had laying around and now It works.. I mean my ecu is chipped it is a vtec computer so why will It not hit without a vtec controller hooked up?? We cleaned the screen replaced the o ring and it is just twisted and taped..

 

i would disconnect the vafc and follow the factory service manual steps to resolve the code 21.
how do you know that you're still able to get into vtec, how are you verifying this?

 

https://honda-tech.com/forums/hybrid-engine-swaps-18/%5Bfaq%5D-%22my-vtec-doesnt-work%22-1812135/

It'll help you diagnose the CEL the Honda way

 

i'd check your wiring...and ditch the VAFC

 

x2

 

It is in my computer... Hooked another ecu up in my car no longer throws code 21.. What could be wrong In my computer making It not hit vtec??