R31 Rb20Det Drift Car Help

[niZmO_Man]

That's when that new Aus-spec radiator comes in handy.

[Leeroy94]

Cooling problem sorted.

Now I need to fix the revs problem.

I've checked majority of the electrical side of things. Spark plugs, coil packs etc. I've checked all my hoses/pipes for leaks.

Could it be an ECU problem? And how would I go about diagnosing it?

[GH05T]

corrected, i had a customer bring his astra in whch he had filledthe radiator with oil. completly.....and drove for several hours some how.

post results when fixed.

[bcozican]

Cooling problem sorted.

Now I need to fix the revs problem.

I've checked majority of the electrical side of things. Spark plugs, coil packs etc. I've checked all my hoses/pipes for leaks.

Could it be an ECU problem? And how would I go about diagnosing it?

check AFM in those electrical problems ? easiest way is to grab someones that you know works bang it on and see if it clears up

[Leeroy94]

check AFM in those electrical problems ? easiest way is to grab someones that you know works bang it on and see if it clears up

Unfortunately I have no friends with rb motors but I do have a multimeter.. Can I check that way?

[Leeroy94]

Suspicious: Some sort of resistor is hooked up to the coolant temp sensor circled in the picture. Previous owner said that it makes the ecu think its running at 30 degrees so it puts more fuel in to make a few extra HP?? I tried removing it and returning it to stock but it was missing around the 2000-4000rpm mark. So for now I reinstalled the resistor and its running fine from 1000-5000rpm.

Thought I would input as much information as possible.

Edited September 25, 2013 by Leeroy94

[Leeroy94]

Is this ECU for a silver top rb20det?

[Leeroy94]

I tested my coil packs and they were all fine. Then today I tested my coil pack plugs. Plugs 1 measured 6.8 ohms then plugs 2-6 measured 7.2. Is this enough difference to be causing it not to rev over 5000?

[Dan_J]

those resistor things are stupid, usually the ecu chip you get off ebay stating more power and fuel eco.if the ecu thinks ur engine is cold it will rich up the mixtures but also retard timing

[Leeroy94]

those resistor things are stupid, usually the ecu chip you get off ebay stating more power and fuel eco.if the ecu thinks ur engine is cold it will rich up the mixtures but also retard timing

I tried returning it to stock but it made it worse. Spluttered and missing from 2-4k rpm.