I have a ek hatch with a stock OBO B16a engine with a p30 basemap into a p28 ecu. I tried jumping the ecu many times and I can't get the check engine light to blink it just stays solid. My car does not rev pass 4500 rpm and does not drive faster then 45mph. Rpm fluctuates sometimes when I come to a stop. Timing is good and engine idle fine when I don't drive it. I really need to figure out wth is wrong with my engine any info I would appreciate.

 

Without the service connector jumped, does the CEL remain on steady while driving?

 

Yes it stays on steady when the engine is running. I forgot to mention that it has no power at all it revs slowly and picks up speed slowly.

 

You try jumping it while the car is running?

 

The last time I had this happen, it was a bad ecu/chip. If you have another ECU to swap out, I would try this and see if it does the same thing

 

Yeah I tried jumping it while the engine while running and the check engine light is still on and not blinking. I'll try to swap out the ecu and see if that makes the check engine come in or not

 

You can cause a fault such as disconnecting the O2 sensor make sure CEL comes on and code is readable.

Double check the timing. Won't rev over a certain rpm but no CEL is very often because a cam is out of time.

 

^This suggests CEL code 0.

However, do what mk378 suggested (unplug O2 sensor) to verify.

 

Ok I'll unplug the o2 sensor and see if my car throws the code for it.

Code 0 means bad ecu right?

 

That's one possibility. There are others.

https://honda-tech.com/honda-civic-d...lists-1901557/

 

I just put my old ls ecu in my car and it runs really good but the check engine light is still on I tried jumping and it still does not give me a code. Thanks for the link Ron J I'll take a look at it and see if this will help me out.