I have a huge problem with my Honda Accord 1.8i LS 1999 with F18b2 Engine. My Vtec doesnt work anymore.. I have no idea why. I've cleaned the solenoid and tested the solenoid, changed oil and oil filter and spark plugs, checked oil pan, no CEL also changed Thermostat (was broken), Speedo is working and all gauges are fine, Engine is warm as it should. I've done pretty much EVERYTHING but Vtec is gone :S there is no different in sound anymore as I hit 4000RPM like it used to before :S What could the problem be???... Please help me some Honda experts.. with tips.. I miss the baaaaaWHAAAAAA so much

 

It's possible you have metal shavings running through your motor and some of those flakes could be in the solenoid so that VTEC will not activate

 

Any Check engine lights on?