ok heres the deal i just dropped a jdm d15b vtec in my 93 cx with an american virgin p28... the check engine light doesn't come one when i start it up but when im driving and i leave it in third, fourth, or fifth gear for more than a minute the check engine will turn on... my friend that dropped in the engine with me says that it might be the O2 sensor (that it was dirty) but it wasnt.... can i get some help?? any suggestions?? thanks.

 

Using the following site, check to see what code it's throwing. Then let us know and we can help you from there on.

 

what site??

 

Sorry. Forgot to give you the site. Here it is.

https://honda-tech.com/zerothread/1901557

 

k cool thanks ill check it out tomorrow first thing....