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Rb20 Not Firing

EVL-180

By EVL-180,
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EVL-180 Apprentice

EVL-180

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Posted

Hi to all, im not sure who can really help me on this. i reciently put a RB20 into my VL (dont ask y) and i have power goin to the ECU and pumps, but the 20 just doesnt want to fire to life. there are a couple of things me and a mate think it could be the ignitor switch, or maybe there is a plug somewere i have missed (dont know were thoguh i seem to have them all sorted). any ideas anyone?

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BH_SLO32 Proficient

BH_SLO32

Posted
Posted
Hi to all, im not sure who can really help me on this. i reciently put a RB20 into my VL (dont ask y) and i have power goin to the ECU and pumps, but the 20 just doesnt want to fire to life. there are a couple of things me and a mate think it could be the ignitor switch, or maybe there is a plug somewere i have missed (dont know were thoguh i seem to have them all sorted). any ideas anyone?

Who did the wiring? It is important to connect a number of main power feeds if the ol' girl is going to fire. Without going into too much detail you at least need the following:

1. Power to injectors, ECCS relay & Pin 58 (battery power - constant). This is supplied by the white wire with the black stripe in the engine bay plug of the RB20 loom.

2. Power to the Ign Coil relay when the key is in the "IGN" position. This is supplied by the white wire with the purple stripe in the engine bay plug of the RB20 loom.

3. Power to pin 45 when the key is in the "IGN" position. This is supplied by the black wire with the red stripe in the engine bay plug of the RB20 loom.

4. Power to pin 43 when the key is turned to the "start" position. This is one of the wires in the in-cabin plug.

5. Pin 18 is the trigger wire for the fuel pump relay.

This should be enough to get you started. I would also suggest you connect power to the air regulator and O2 sensor heater element. The air regulator operates independently of the ECU and bypasses air via the throttle body when the engine is cold. It closes when the engine gets some temperature into it.

Hope this helps.

Cheers

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Wheezy Mentor

Wheezy

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Posted

where did the engine come from? a half cut etc?

If you have power to all of the above possiably check that the fuel in your fuel rail hasnt solidified. Ive seen this a few times on cars that have had imported motors dropped in...also check that the fuel lines are in the right way around too :action-smiley-069:

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EVL-180 Apprentice

EVL-180

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Posted (edited)

With out sounding to dodgy, im doin all of the wiring myself because where i live there is no auto sparkys around to do any thing, have to get the car off the island to do see one. engine came from a halfcut that apparntly ran b4 it was sent to me. looks all good though and there is oil all through it so it looks like it has been ran recient enoguh

Edited by EVL-180
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