So I was driving to my hometown and I took a rock in my radiator and my car overheated and check engine light came on. The nearest town was 20 miles so I kept pulling over putting water in it till I got there and fixed it. When I kept driving my check engine light was off untill my car heated up to regular temp then the CEL came on again and no vtec, and for a month now it has done that. I dont get it because the light is off until it warms up then it comes on and no vtec. Can anyone help me please? Nothing else seems to run funny at all...

It is a B16a swap into a 93 civic ex...

 

Have you pulled the code?

 

Not sure how to without code reader

 

search. you can jump the DLC and read codes from the engine light flashing a certain sequence.

 

AutoZone and many other parts dealers will read codes for free.

Check your oil level if VTEC ain't working. Low oil=no VTEC even if the code isn't VTEC solenoid failure.