I have a turbo s2000 experiencing some challenges with vtec engagement. When the car is starts up from a long extended shut down we are able to activate vtec, however, once the car warms up the vtec does not engage. The oil pressure is fine a bit above 60psi and rising when in vtec range. The oil was changed several times with the attempt to eliminate any concerns with viscosity breakdown. The car does have an oil cooler, but there is plenty of oil (6qts) and temps are fine. The turbo is getting oil from a tee off the oil pressure sending unit. The oil pump is new and we checked the vtec solenoid by manually triggering it and it works fine. AEM acknowledges the vtec is on so the signal from the ECM is okay...I assume it has something to do with the pressure...any thoughts..before I take things apart. Thanks


Modified by blues2k3 at 9:53 PM 12/8/2005

 

hit 12volts to the solinoid and see if it clicks

 

yes, when we trigger it using this method it does open (click).

 

pull it off the motor and chack to see if the screen is clogged or got **** in it

 

yep, its clean try that several times...

 

How do you know its not engaging then?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Muckman &raquo;</TD></TR><TR><TD CLASS="quote">How do you know its not engaging then?</TD></TR></TABLE>

The wheels don't break loose anymore when VTEC hits.

Isn't there a way to lock the VTEC on with the AEM?

 

its a bit apparent with the dyno plots and sound...