Ibrar Jabbar Posted July 14, 2006 Share Posted July 14, 2006 I am trying to start my car for the first time after the rebuild and have a suspect problem of fuel injectors not opening. Does anybody know, what Voltage I should be getting at the injector plugs? Quote Link to comment Share on other sites More sharing options...
Ian C Posted July 14, 2006 Share Posted July 14, 2006 You should have about 12v at one pin and the other one shouldn't have a connection to ground until it's being switched on by the ECU. And uh-oh, things not gone to plan, Ibrar? -Ian Quote Link to comment Share on other sites More sharing options...
Ibrar Jabbar Posted July 14, 2006 Author Share Posted July 14, 2006 Thank's Ian. No mate, I was hoping it would fire up at least , I have spark and fuel in the rail, but nothing getting past the injectors as the plugs are bone dry. Quote Link to comment Share on other sites More sharing options...
Ibrar Jabbar Posted July 14, 2006 Author Share Posted July 14, 2006 Just checked on No6 Inj. I have 12V on the blk/org wire and continuity with Ign Off and O/C with Ign On. Quote Link to comment Share on other sites More sharing options...
Ian C Posted July 14, 2006 Share Posted July 14, 2006 Odd... What fuel pressure are you seeing? Quote Link to comment Share on other sites More sharing options...
Ibrar Jabbar Posted July 14, 2006 Author Share Posted July 14, 2006 Approx 50 PSI. I am seeing the opposite of what you told me on the continuity check. Quote Link to comment Share on other sites More sharing options...
absz Posted July 16, 2006 Share Posted July 16, 2006 quick way of checking the crankshaft sensor circuit is by cranking the engine and keeping your eyes on the rev counter needle. if you see the needle jumping very slightly then the crank sensor+ wiring are fine. i will then check the cam sensor circuit as your running a aftermarket ecu make sure that the pins are connecter the right way round to ecu. if those circuits are fine then you should see some sort of current to injectors/ coilpacks. Quote Link to comment Share on other sites More sharing options...
samsupra37 Posted July 17, 2006 Share Posted July 17, 2006 And Absxxx is just brilliant!!!!! Quote Link to comment Share on other sites More sharing options...
Ibrar Jabbar Posted July 17, 2006 Author Share Posted July 17, 2006 Thank's guys. OK, bit of an update. I may have a suspect faulty EMU as I have checked the output from standard ECU, linked direct to the injectors & all is OK, they fire up. I then checked I/P and O/P on EMU and don't have any injector signal O/P which leads to a faulty EMU or software/firmware problem! Doesn't look like I'm going to make it to JAE in the Supra at the moment Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted July 18, 2006 Share Posted July 18, 2006 Are you sure you have the jumper settings correct? Quote Link to comment Share on other sites More sharing options...
Ian C Posted July 18, 2006 Share Posted July 18, 2006 Yep, he's got them set correctly. I've been through them with him twice over the phone. As well as many other tests. The unit is seeing injector pulses from the stock ECU, and the stock ECU runs the injectors when they are directly connected anyway. But the injectors don't fire when the E-Manage is in the loop. Ibrar is sending me his Ultimate to have a look at, see if it works in mine. -Ian Quote Link to comment Share on other sites More sharing options...
Ibrar Jabbar Posted July 18, 2006 Author Share Posted July 18, 2006 The EMU, should be with you today Ian, lets hope it's something simple. Quote Link to comment Share on other sites More sharing options...
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