R32 Gtst: Check Engine Light / Car Not Starting.

[jajaboy]

Hey all,

Not sure if I'm posting in correct place so mods feel free to move it.

But yeah, pretty much my car randomly broke down the other day. Saw the cat overheat light come on and thought it was my cat, but I've since removed the exhaust and cat, yet it's still flashing. After researching the symptoms online I found out it doubles as a CEL.

So first thing I did was try to put my ECU into diagnostic mode. Discovered I had an OEM blitz tuned ECU, yet after turning the screw clockwise and anticlockwise a few times, nothing really happened. It only has a red led if it changes anything.

So right now it cranks and I can hear the fuel pump priming but no spark. I did manage to get it started once when the CEL seemed to reset, however it ran horribly for 5 secs and shut itself off. I checked my coil packs and sparkies only to find the spark plugs were just a little black. Probably from running a little rich though.

Anyway, I need help. I can't use diagnostic mode (or maybe I'm doing it wrong) and I don't want to be spending money on things that don't need fixing. If anyone has had a similar experience please share below how you fixed it.

Thanks guys.

[GTSBoy]

I'd be doing swaptronics with another (standard) ECU as first choice. That Blitz "tuned" ECU won't be worth anything in any real sense, and a standard ECU should/would run the engine just as well. This would be the easiest way to work out if the ECU is dead and to sidestep any nasty/annoying hassles with that ECU not being the same as factory when it comes to diagnostics, etc.