Engine Check Light Sporadically Flicking On And Off At Full Noise?!

[ardie]

Hey guys,

Well I just got my car back from RE Customs the other day and its making 280 rwkw on 16 psi (I run it on 14 daily). Last night I decided to try my high boost. the car takes off and then gate opens blah blah blah, BUT then as its getting to around 4 to 5 grand (was too busy focusing on the road) I notice the engine light flicks on and off, the flicking was similar to what happens when a light has a loose connection and whenever it moves, for that split second the connection is good again it lights up then dies again. Don’t get me wrong, I don’t think it’s a loose connection, imp just wondering what may be hurting my car. the car is stock internally with all the usual mods to support a bigger turbo (management, fuel system, exhaust, intake, afm etc) so I thought id come to the brains trust and see if you guys have any thoughts on it.

Cheers,

Ryan

[GTR32GUS]

What ECU u got , probley a knock light

[Guilt-Toy]

hey mate

Sounds to me that the car is doing one of a few things

1: Knocking

2: maxing the AFM

3: maxing the injectors.

Can you do it again and this time get this data from your ECU's hand controller

1: the max knock level

2: the max injectory duty

3: the max Air flow meter voltage

then we can determin what the issue is. Is the flashing very fast or is it slow?

cheers

[ardie]

Hey guys, whoa you work fast! Well the light flashed sporadically, and at a fast rate.

DAMMIT! I was hoping it wasnt knock as I mulled over it last night but given what you just said Guilt I think its knock. Im running 550cc injectors and a Q45 AFM so there shouldnt be any issues there.

I actually dont have a hand controller for the PFC as I got it as a reiculously cheap price (before they ended) minus HC. Iv been looking at getting one but I was addressing othe areas of the car before hand as i heard they went that necessary.

Thanks for the quick help boys, if you have any more advice just shoot away, last thing i want to do is melt an engine.

Cheers,

Ryan

Edited August 2, 2007 by ardie

[Guilt-Toy]

If your ever in the Newcastle NSW area send me a PM and I can remove a couple of deg timing where its knocking to fix it up for ya.

[mad082]

it also may not actually be knock that it is registering, it may be engine noise that is setting it off.

[seeyagtr]

If it was engine noise, you would see warning lights on low boost also, probly knock warning....

[Strik3r]

tell your tuner to come for a spin with you and show him the problem. Sounds like they squeezed it a bit hard and it needs more fuel or less timing. They should fix it up for you on the dyno for free since you paid for a full tune.

[mad082]

If it was engine noise, you would see warning lights on low boost also, probly knock warning....

what i meant was the light is probably triggered by the knock sensor, but the knock sensor may be picking up a noise caused by something else rather than detonation. it may just be loud enough at high rpm for the knock sensor to register it. it is more than likely knock, but there is always the chance it is a false knock.

[joeyjoejoejuniorshabadoo]

+1 for knock.

thats the usual setup for the check light with a pfc...

[Guilt-Toy]

i can think of over 6 different reasons why the check light will flash.

+1 for knock.

thats the usual setup for the check light with a pfc...