i have a '93 honda civic cx hatchback with an obd1 d16z6 swap running a p28 ecu...

...the car is throwing a code 21, 22

i have never worked on eg's before and im not 100% sure what im looking for as far as the vtec wiring goes. the wires are ran from the vtec solenoid and run into the fire wall. im not sure where they go into the ecu from there but i can check tomorrow morning.

i tried searching for the ecu pinout but didnt have any luck. if someone can plaese help me it would be greatly appreciated!

 

have you checked your oil level......

 

Yes, oil important, otherwise no vroombaaaa. If ok, check the solenoid itself

 

check the screen inside the vtec solenoid itself. check your oil/coolent levels.

 

is your fan on when you turn your key to the on position? If it is then switch the plugs on the thermostat and the solenoid.

 

the codes are:
21 VTEC spool solenoid valve
22 VTEC pressure valve
so like everyone else said check the oil level first, the if thats good it has to be the wiring. has the vtec ever worked?

 

the oil and coolant levels are good... i just bought the car with the swap about 2 weeks ago and vtec has never cracked!

im almost positive its the wiring. does anyone have the ecu pin out?

 

i checked the ecu and the wires coming from the engine bay are going into a4, c6 does that sound right to anyone?

 

bump...

c'mon somone has to be able to help me out!!!

 

Get some wire and touch one end of it to the battery positive terminal and touch the other end to the connector on the solenoid. If you hear it click, then it works. If it works, then its the wiring, if it doesn't, well then it is the problem.

 

just incase you're still trying to find it.

 

your solenoid is more than likely bad though. do like the other guy said and touch the wire to the battery and see if it clicks.

 

allright thanks guys! i'll check the solenoid first thing tomorrow and let you guys know what happens.