saxo vts conversion running rough and wont rev above 6000rpm

1. projectsaxo Newbie Joined: Jan 2008 abram, wigan Posts: 10 cars owned: 1, vauxhall astra 2, landrover 109 s

   #1 21st March 2012, 21:59

   hi need serious help here,, i'm on the verge of setting the thing on fire!!
   
   2003 3 plug vts with new ebay unlocked ecu
   
   first problem - when i first start the car it really really struggles to get up to rev's on choke.
   
   second problem - once running and up to temperature she splutters and farts and fouls th plugs up in no time.
   
   third problem - when i floor it the car will not rev more than 5800-6000rpm and no matter what i do i cannot figure out why.
   
   fourth problem - https://www.facebook.com/groups/fcsm...0576874395668/ incase you cant view the image,, i have some wire on the engine loom that dont have plugs on them,, all plugs on the engine are catered for,, these wires are pink, grey and there is a small 1mm 2 core and screen with red and green wires i dont know what the hell there for.
   
   please help me before i do set this thing on fire in the street as it trying my patience big time
2. DeanAngell1234 Established Member Joined: Dec 2011 Trowbridge, Wiltshire Posts: 1424 Suzuki Swift SZ3 2003 Posi Blue VTS

   #2 21st March 2012, 23:37

   ECU maybe? My mate had this problem on his VTS, can't remember if it was his ECU or wiring loom
3. user_29491 Saxperience Forum Bum Joined: Dec 2008 Lancs Posts: 4124 JP4S'd R.

   #3 22nd March 2012, 09:24

   Sound's like a shit ECU to me too.
   
   Got a mate close by with a unlocked one you could try?
4. welshpug Saxperience Forum Bum Joined: Jul 2010 South Wales Posts: 3078 ZX 16v, 205 GTI, 309 Goodwood, 405 MI16.

   #4 22nd March 2012, 10:49

   coolant temperature sensor is likely candidate.
5. projectsaxo Newbie Joined: Jan 2008 abram, wigan Posts: 10 cars owned: 1, vauxhall astra 2, landrover 109 s

   #5 22nd March 2012, 14:48

   Hey dean,
   
   I could understand it being the ecu if it was an old one and had a botch job with ecu etc etc, but it's not it! was bought off ebay freshly programmed to run without immobiliser, unplugged immobiliser box before plugging ecu in the job lot also started first time i turned the key, but it just wont rev properly,,
   
   Just gone to it again now and she wont even rev up without gradually pressing the throttle,, and you cant fully press the throttle or else she tries to die!!
   
   I have belled out the pink and grey wires i have and the grey is live with 12v! and the pink is a ground of some sort, also when tested back to the ecu wiring the injectors tick,, like a relay clicking when tested for continuity.
   
   Any more suggestions?? PLEASE!!!!
6. welshpug Saxperience Forum Bum Joined: Jul 2010 South Wales Posts: 3078 ZX 16v, 205 GTI, 309 Goodwood, 405 MI16.

   #6 22nd March 2012, 15:05

   check the wire numbers then look at a wiring diagram, might be for the map sensor?
7. projectsaxo Newbie Joined: Jan 2008 abram, wigan Posts: 10 cars owned: 1, vauxhall astra 2, landrover 109 s

   #7 22nd March 2012, 15:12

   how do i find out the wore numbers and also where can i find wiring diagram for a 2003 3 plug vts?????
8. welshpug Saxperience Forum Bum Joined: Jul 2010 South Wales Posts: 3078 ZX 16v, 205 GTI, 309 Goodwood, 405 MI16.

   #8 22nd March 2012, 16:54

   haynes manual or citroen dealer.