Ecu won't prime

[jahizen]

Hi. I'm new.

Ecu won't prime. S300 it's several years old.

It can take up to 15-20 mins before it primes when it's warm outside.


But when it's cold, it primes just fine.

I knw it's the ecu because when I swap it out with a stock ecu it primes ASAP.



Any ideas?

[Spunkster]

It could be the main large capacitor that needs to be replaced, but if that doens't fix it you should just install the s300 into a different ECU.

[jahizen]

I dnt knw anything about tht. Is it easy to do?

[Spunkster]

http://www.hondata.com/s300socketing.html