Michael02hawk

iTrader: (26)

Engine has forged internals, with a mild cam, 207/220, .574/.574, stage 2 ported heads. The car sounds great, runs great, and just dyno-tuned with ls1-edit. Fuel pressure is great, and A/F is perfect, through-out the entire rpm range 0-6000. I doubt there is a misfire.

Since the install I will get a flashing SES light, if I maintain the rpms between 2000 - 2900. If I pass 3000rpms, the light immediately shuts off. If I drop down below 2000rpms, the light will shut off after about 20 seconds.

It does not throw a code.
The P0300 code has been shut off - yet the light still flashes!

Any ideas?

busta9876

iTrader: (3)

generaly a flashing SES light means an extremely rich condition that could damage catylitic converter, usually a p0300 would be set with it as well..not sure what else...weird that you have no codes.

dalejr8ls1

iTrader: (1)

yea man my car used to have the same problem, but i ran o2 sims and it still did it but less often. After i had it tuned the light never came on. Not sure whats causin it but I wouldnt worry if ur getting good numbers/ and its not running to lean.

Michael02hawk

iTrader: (26)

I do have 02 simms in the rear.

I've heard a lose ground wire on one of the heads could cause something like this.

Any other thoughts?

BTL FED

iTrader: (9)

Whenever I would get a flashing SES light, it would be because of misfires

strokedls1

iTrader: (1)

A bad misfire usually causes it to flash. However if you have the codes turned off it is not going to set a code. I would pull the plugs and see if you find anything out of the ordinary.

Cyborg

iTrader: (8)

Stop driving it and flat bed it to your mechanic.

Michael02hawk

iTrader: (26)

So, even though the code is shut off, P0300, that doesnt prevent it from flashing the SES light? Hhmmm, okay, makes sense. I'll re-enable the code, and see if it then logs the (any) codes.

Also, it was just Dynotuned 2 days ago. The Fuel Pressure, A/F, and all other monitors are reading A+. Its not running rich, nor lean, through the entire RPM range.

I'll work with it some more, and see what comes of it all.

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A bad misfire usually causes it to flash. However if you have the codes turned off it is not going to set a code. I would pull the plugs and see if you find anything out of the ordinary.