b16a

i have a first gen. b16a engine its in a 90 integra . ok when i drive it sometimes the engine check sign comes on but sometime it doesn't
they say its the auto sensor or something, my car has only one and ecu of the b16a has 2 or something couldn't u tell me what it its is why the engine sign comes on?

The light comes on because of a trouble code. If a sensor is bad the ECU will recognize it being bad and set that code. The only thing I can think of right now that a Integra has of 1 and B16a has of 2 is the o2 sensor. The B16a has a primary and a secondary o2 snsor. You can easily replace these or have them replaced for about 50-80 a sensor. See if you can get access to a Break out Box and see what that code is. Thats the only thing I can think of... someone else help me out...

i have a b16a in my 90 integra and i only ran one o2 sensor i used my stock ls manifold and it never pulled a code for it but my idle valve control is the only code thats pulling i tried using my stock ls one but its still pulling the code thats my only problem ne1 got a suggestion?

Put a proper B16a manifold and throttle body etc on it, and I bet the code goes away. :)