okay, a friend of mine drives a 98 civic(SOHC engine). he installed an AEM C.A.I. this weekend and has had his check engine light on ever since. i took a look at it today and it appears that all his connections are good. his sensors are properly connected, etc. he hadn't reset his ECU, so i walked him through that. afterwards i told him to take it out and run it through the gears to let the engine adjust. i need to know if this is a common problem on these civic's or is it just his? anything else i should check? thanks guys

 

did he disconnect the battery ? it resets the ecu but sometimes it doesn't wrok, is it obd 2

 

Your best bet is to see if the CEL comes back and then read the code to see exactly what is casuing the light....

 

ok, well he doesn't have a code reader so do you think honda will do that for him? thanks guys

 

make sure he has the hose running to the crank case breather.

 

I am not sure if the Civics are the same, but on my 3rd gen Teg the CEL will flash a code that can be read. Also, on my 89 Civic, the ECU has a LED which displays the code.

Basically, I am saying you might not need a code reader to find out what is wrong. Maybe someone else can step-in and give more info.