I just finished a brutal 10 hour bout putting in some Crane gold 1.6 roller rockers, LT4 springs, shims, Fel Pro seals, etc, put everything together, and idled for about 5 minutes fine.

Took my friend for a test drive and told him "any mod that doesn't throw an SES light is a good mod".

We stopped for some chow, and the damn SES light came on.

I'm pretty sure I did everything correct. Zero lash, then gave the polylocks a 1/2 turn at TDC. I don't think I forgot to put anything back where it should be. Something else I should check?

 

What does the OBDII, DTC number indicate the problem is???

 

I haven't had a chance to get it scanned yet, but that is a good idea. I'm assuming the problem is missing in a certain cylinder.

 

Plus they're pretty damn loud.

 

Any guesses, ideas, theories, hypothisis, lies, etc?!?!?!?

 

Whats the code?

 

It might be possible that the knock module is picking up on the much louder ("clackier") RR and interpriting it as false knock.

I don't know if that would set off the SES light though.

But LT4's had a different knock module specifically for that reason... so it can happen.

 

No LT4KM?

 

FINALLY good people have stepped up. For some reason, the SES light went away on its own. I guess I should get an LT4 knock module. Skull-1 is still running a bit rough though. Perhaps because of the extra lift?

 

Even though the light went away, you should still check what the code was. I've had the SES light on since I installed a new y-pipe with hi-flow cats. The code had to do with the EGR valve not getting enough flow..not a big deal, plan to turn it off once I get around to getting the engine dyno tuned. I also installed 1.6 RRs recently and I would highly suggest you get your car tuned...dyno or mail in, you've changed the lift/duration. My car runs fine, but it "feels" like it needs to idle at a little higher rpm now. Sometimes it feels like it's on the brink of dying...just give it a little gas and it's fine. Only happens at a stop light...it should just be tuned out.