hey guys i need some help here? i check my check engine light.... and its throwing me a 10 and 21 code these codes are ( 10 for intakes system and 21 for vtec control solenoid) i changed my solenoid and its still throwing the same code so what should i do? and tips would help thanks a lot

 

Start by disconnecting the negative battery cable for a moment to reset the ECU codes and see if the ECU throws a code again when you run the car.

 

yea it still throwing the code the same ones

 

For the IAT sensor code 10, make sure the IAT signal wire has the right voltage at the correct ECU pin. For the other check your oil, make sure it's not black and sludgy. You can change the oil and filter and/or check your oil pressure. I assume when you changed the solenoid you made sure the screen was clean. You can supply the solenoid with power and ground it for a second. If it's working it will click. GL

 

ok ill check that tmw and ill let you kno asap.

 

ok will i checked everything and the vtec work fine and everything like that... i talk to the dude who sold me the car and he said that i just need to rewire my vtec?? so how do i do that?

 

year/make/model/engine/ecu?

 

1994/ civic/ dx/ b16a2/ p28