saxo engine replacement not firing

1. xaphan Newbie Joined: Feb 2012 medway, kent Posts: 11 Saxo Desire 1.1i 5dr

   #1 19th February 2012, 21:03

   Got a 2002 saxo desire 1.1, which after a catastrophic self dstruction brought about by the failure of the timing belt, has had an engine swap.
   
   The donor lump came from an rear ended accident damaged 2002 vehicle of identical specs.
   
   Having successfully fitted the new engine, I'm having problems getting it to start. I have compression, spark, and the fuel system is pressurised. I'm getting no fuel through the injectors and the immobilisor lamp on the dash has lit up. I've replaced the aerial ring around the ignition barrel, but to no avail.
   
   I have an ODB unit, which i have plugged in, but am not getting any response from thw ecu to open communication.
   
   I've done a physical inspection of the wiring, and I can't see anything wrong.
   
   Anyone got any ideas where i should be looking next?
2. xaphan Newbie Joined: Feb 2012 medway, kent Posts: 11 Saxo Desire 1.1i 5dr

   #2 21st February 2012, 02:04

   Anyone got any ideas?
3. Cam Saxperience Post Whore Joined: Nov 2010 Kent Posts: 8439 Gen 7 Celica 190.

   #3 21st February 2012, 02:16

   Did you change the ECU mate?
4. xaphan Newbie Joined: Feb 2012 medway, kent Posts: 11 Saxo Desire 1.1i 5dr

   #4 21st February 2012, 02:18

   No, original ecu is still in the vehicle. One of the 3 plug jobbies
5. Cam Saxperience Post Whore Joined: Nov 2010 Kent Posts: 8439 Gen 7 Celica 190.

   #5 21st February 2012, 02:22

   Strange sounds like you locked ecu but if you didnt change the ECU should be fine. You done any wiring work?
6. xaphan Newbie Joined: Feb 2012 medway, kent Posts: 11 Saxo Desire 1.1i 5dr

   #6 21st February 2012, 02:27

   Only wiring work I've done is.to repair the crimped loop on the.end of the alternator lead, as the original alternator had corroded it off. Otherwise, everything was just plugged back in where it came from. Ecu was unplugged, to make it easier to get the lump out, but the battery had already come off.
7. xaphan Newbie Joined: Feb 2012 medway, kent Posts: 11 Saxo Desire 1.1i 5dr

   #7 21st February 2012, 02:27

   How can I tell if the ecu has locked?
8. Cam Saxperience Post Whore Joined: Nov 2010 Kent Posts: 8439 Gen 7 Celica 190.

   #8 21st February 2012, 02:57

   Normally with the key light flashing and the coil not sparking, but if you not changed ecu and done nothing to the wiring shouldnt have locked it.
9. kennym1987 Established Member Joined: Sep 2007 Armadale, West Lothian Posts: 1230 flatty 16v sleeper and a regular vts

   #9 21st February 2012, 06:51

   just a thought mate, when my conversion was finished the and thing wouldn't start, we had the same symptoms as you and it turned out there was one earth not connected. go over all your wiring and make sure everything is where is should be
10. xaphan Newbie Joined: Feb 2012 medway, kent Posts: 11 Saxo Desire 1.1i 5dr

    #10 21st February 2012, 14:11

    Thanks, ill triple check my earths, but I am getting a spark, just no fuel, but the system IS primed snd the pump does work.
11. xaphan Newbie Joined: Feb 2012 medway, kent Posts: 11 Saxo Desire 1.1i 5dr

    #11 25th February 2012, 17:05

    Took it all apart again, reconnected all the wiring and hey presto, it works!
    
    Thanks for your help guys.