Wiring problem diagnosis. Pls help. Ign/Fuel pump relays. I think I did it wrong

Discuss the RB20, RB25 and RB26 series engines.
robots
Posts: 4
Joined: Mon Apr 07, 2008 8:28 am
Car: A31 CEFIRO LHD SPEC

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Hi!Does anyone have any wiring diagram that clearly show how r32 rb20 or rb25 ecu igniter is powered ?Or maybe someone knows how is it powered from factory ?

1)I had an engine conversion, and I think I've powered my ign./fuel pump relays incorrectly.When I cank the car, fron ON position to START position I don't get any solid power to ecu until the engine starts. Hmmm, hard to explain.Lets say I connected nissan datascan or emu software and crank the engine, I have to connect to car ecu again, to resume all the data view/error check.Or when I turn off the engine. I go from ON to ACC position, power is cut to ecu and I have to turn the key to ON position, to restore power.

2)As for the fuel pump relay.When I turn the key from ON to START position I can hear the fuel pump prime. It primes as long as I hold it there.Sometimes after I crank the engine and don't start it. And go to ON again. Fuel pump starts to prime and shuts off in a couple of secs.

The car is ex-carb A31 rb24s. LHD spec A31 cefiro(delivered to Philippines and Arab Emirates.Also china got some. Where I currently live.)Basically I had an rb20det engine and wired it in existing vehicle wiring.(splicing the wires etc).

If anyone has some info or some advice, would really appreciate it !

Thanks!


silviasgp06
Posts: 418
Joined: Mon Apr 02, 2007 1:12 pm
Car: 95 Nissan Zenki RB25 Powered

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hi welcome to nico. SEARCHING is highly advised, but...

have you downloaded the Factory service manual? this thing your on called the World wide web has a whole crap load of info on it. TRY using yahoo or google. I just typed in "r33 factory service manual" and the first site had the "r33 all engine manual".

but because im bored heres a link to down load it. (right click save as) http://carfiche.com/manuals023...l.pdf

keep in mind this manual has all motors that were available in the r33 skyline so pay attention and dont confuse rb25,rb26 etc pages, with the rb20 pages.

if you get confused by the manual give up.

emm spoon fed

robots
Posts: 4
Joined: Mon Apr 07, 2008 8:28 am
Car: A31 CEFIRO LHD SPEC

Post

I got all the manuals.But have hard time finding whole vehicle wiring like they have in the r32 gtr manual. Thought someone did the wiring by themselves and know how to wire it in properly, maybe diagnose my mistake.


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