CEL codes a 21 usually once or twice a day, once to work and once back. I turn the car off and back on again and it goes away. I haven't cleared (unplugged) my ECU yet so I'll try that at lunch. Solenoid works I gave it 12volts and it switches.

Could this be a trash in the filter therefore not enough oil pressure problem or a half faulty vtec solenoid...etc?

Any help would be great.

Chris

 

I had this problem for a while. Cleaned off the harness connectors and it went away.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Rory Breaker &raquo;</TD></TR><TR><TD CLASS="quote">I had this problem for a while. Cleaned off the harness connectors and it went away.</TD></TR></TABLE>

no kidding, I just wired in a plug for the vtec oil pressure switch (two wire plug). I'll check the connection/contacts on that (it should be FINE since it's a new plug) as well as on the vtec solenoid and see if there's an issue. Thanks for the input.

Chris

 

anyone else?

 

cleaned wires/connections still same problem...anyone else?

 

holy shizzle...no one else?

 

ok I have done the following..

checked continuity between ecu and solenoid (there is)
check resistance of solenoid (14-30ohms range) it reads 14.7
changed vtec solenoid to one that reads 18.4ohms

this morning I unplugged the ecu checked the wiring again...funny thing is, now it doesn't throw the code...

anyone else got any ideas...the things I have done are straight out of helms trouble shooting...if it codes again, the last thing I can do is try another ECU...