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#1
30-07-2013, 21:30
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re no fire up.
Thanks for the info on the club s12 site....I can't find what you suggested though. I do have a manual downloaded from the UK site but this seems to be lacking in the sections you mentioned. Head scratching time.. I was working on the old gal this evening between rain showers and darkness. I found by your suggestion of grounding the pump supply it runs well. The engine will still initially fire but won't sustain. I have a start signal of 12V and although have had to bypass the starter wire in the main loom it turns over, I was wondering if there is something in the loom thats affecting the operation of the system. Everything is there but it won't sustain, have you seen or heard of any ECU's going funny in your time? Apart from the connectors that I have reworked on the looms previously mentioned I am having trouble understanding the nature of this problems root cause. If you have an epiphany, let me know as I am struggling at the mo.
All the best, John 
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#2
31-07-2013, 14:02
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I have popped the full service manual I referenced up here for you to download http://spafrost.me/nissan-silvia-s12...s12_manual.pdf - it should contain the correct sections
 I have my full starter circuit bypassed, as the wiring went bad, so I should not imagine it will stop it from running. The ECU is a pretty simple old thing, as far as computers go - They usually give up completely and you loose spark/injection all together. When you attempt to start the engine, how exactly does it behave -does it start, run for a few seconds, then die - fire a few times but die if you let go of the key etc ?
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#3
01-08-2013, 16:21
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Semicured
Hi Nomisfire,
First off, many thanks for your load up of the 200sx manual, it does indeed have more than my manual relating to EC sections mentioned in your earlier reply. The original fault (just to give you some history) was a no start after parking. Upon turning the key through acc, ign, all was there, when advancing to S everything on the board just died out. I returned the key to ign and push started her and got home. shortly after I by passed the S portion of the key start and wired a switch into the starter and all ran ok whilst turning the key to ign position ( i could live with that). The progressively she began to get more and more hestitant in starting. In some cases she started and run then during operation on rainy days she cut out. The cut out felt like poor fuel flow and a gradual degradation in power before shutting down. There was a repair to the block connectors under the washer bottle as the start signal runs to / from the gearbox loom. Shortly after, the ECU loom as previously stated was repaired and new ev1 connectors / pins fitted. In answer to your question about how long does the engine run; it fires up as a burst for a second or two then dies. If I hold a little bit of throttle it runs for aprrox 2 to 3 seconds max then dies. Other than checking the super multiple junction and various other related connectors and relays which all check out, that's pretty much where I am at the moment. Currently I have ordered a raft of new lucas spade and sockets with some new blocks to replace anything else on the affected looms just to ensure there's no chance of any unusual uglies raising their heads. I wish to keep the looms as original as possible whilst minimising to the absolute minimum the need for bypass wiring in the chassis. I hope this gives you a flavour of what's been going on lately. Thanks and kind regards, John
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#6
17-03-2014, 01:51
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Inj
Checked all the loom everything checks out continuity on everything tested loads of fuel mega spark but wont fire spray fuel into the throttle body and she runs inj had previuosly been cleaned and flow tested all ok i have a 12v supply to the inj wiring and it pulses but they wont open im stumped
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