Help With R31 Cutting Out

[Matt_L]

Hey all, first time poster, long time lurker!

If this is in the wrong section I do apologise.

A family friend of ours has an R31 Skyline, and today on the way to work it started feeling like it was losing power, even as she was driving. It made it to work, but was idling rough, and the revs were all over the place.

This afternoon when she went to leave work the car started normally, and then died, and wouldn't restart.The two mechanics here couldn't find anything wrong, other than a leaking fuel line, near the pump, which was replaced immediately, but that obviously didn't fix the problem.

It's turning over, and gets close to starting, but just won't fire.

They've poured Aerostart down it's throat and that got it running for a little while, while they held the trottle down and it seemed like it would be ok, but as they let the revs die down and walked away, the car stalled.

She's understandably not too enthusiastic about driving it home alone tonight, and the mechanics here don't know much about engines with electronic management systems. (They're old-school diesel mechanics)

Anyone have any ideas on what could be wrong?

Or what they can try to get it running tonight, to take it to a mechanic tomorrow?

Cheers, Matt

[66yostagea]

Check the fuel pump by disconnecting the fuel line near the filter. Crank and check for flow.

If you are getting fuel it could be the PRV.

[rsx84]

did this get fixed??

it sounds like a few things like air flow meter, o2 sensor and crank angle sensor but then again it could just be the ECU behind the kick panel in the passenger foot well.

i had a similar sounding problem not to long ago where water got into the relay in that foot well and caused the relay to short out the injector loom and shut off the injectors.