I just built the engine and fired it up today. The wiring is correct (checked every wire 2-3 times) After it fires off it runs like crap unless you rev it up a little bit. After about 20 seconds it trips the CEL with a code 21 (VTEC Solenoid Valve) after the CEL it makes an intermitent metallic clack (fairly loud and inconsistent) unless I disconnect the psi sw and solenoid. The car runs great otherwise just need to get this figured out.

I pulled the solenoid and the screens are clean.....

Any ideas??

Chipped PR3 ECU, 90 Teg LS Bottom, PR3 Head.

Cj

 

anyone have an idea?

 

ttt

 

two things i'd check.
a) try a known good vtec solenoid
b) get an oil pressure gauge and see if you're making enough pressure for vtec to work.

 

Figured the problem out tonight. There was a small strand of wire connecting the VTEC solenoid and the #4 injector causing all my problems!!! It was injecting mass amounts of fuel into the #4 cyl so I thought it might have been an injector till I looked at the wiring schematic. Looked at the plug and thanks to a bright *** light I found the wire in the connector.

The wire was from the previous owner and there cheap attempt to make it work by stuffing a bare wire into the hole on the connector. When I pulled the wire out a few of the strands broke off in the connector and stayed there connecting the 2 pins.

Thanks for trying to help out, I appreciate it.

Cj