so close but so far away

[vwandbmw521]

doing an rb25 swap in an s13

we have power to all the power sources on the ecu but no led light on, and it wont fire.

anyway to test the ecu?

[Sky80]

try trading with someone locally with a known good working ECU, otherwise i would say buy another ECU...

Of course all of the above applies, ONLY IF you are 100% positive your ECU is bad... Chances are however, your ECU is not bad, they rarely go bad

Start double checking your wiring

[vwandbmw521]

any more help or an ecu in nc

[jrd450r]

My rb25 doesn't have a light on the ecu, I though only the 20's did. Rotate your CAS sensor and check to make sure each plug is firing and each injector is firing. Look around the internet if you need help with that as I know there are a few write ups on it. My guess is you didn't power your coil as I had the same problem as most wiring write ups don't include this step.

[vwandbmw521]

plugs are not firing but i believe the injectors might be

how can i test the injectors?

can you tell me where you took your power from and to

thanks

[jrd450r]

You need to locate the power wire on the coil and then splice a wire into there and run it to a power source that get 12V when the key is in the ON, and START position. Bust out the volt meter for this one and its pretty simple.

[vwandbmw521]

there is constent power at the white wire

[vwandbmw521]

bump for help