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[Andy H]

So it looks like the second picture?





http://www.omegaowners.com/forum/YaBB.pl?action=post;num=1258318545;virboard=;title=PostReply

[prestigetravel]

Yes definately the 2nd,has newer design twin plenum and rocker/packs. I hpi'd it as well. I spoke to a friend at local vx dealer,says that lots of car new models get pre registered before official launch date,I saw 4others with end of 2000 1st reg dates some on eBay now

[rustym95]

volt dieode gone in ecu, happens when the engine is turn'd off and on on sort trips, vectras have same problem.

Errr yeh....  :-? :-? Where did you get that one from?

there is a dieode in the ECU that when its going will only work at low volts not 12volts, ecu will still work but only when the volts to it go low. has two volt side one only for start up and one for running, also readers cannot conect to ecu as trying to force 12v into it so will not light up, have one here that is like it, just swaped ecu and was back to norm. oh and it shuts down to limp mode, maf off- cam off- crank off- reader inface off etc.

[Andy H]

Yes definately the 2nd,has newer design twin plenum and rocker/packs. I hpi'd it as well. I spoke to a friend at local vx dealer,says that lots of car new models get pre registered before official launch date,I saw 4others with end of 2000 1st reg dates some on eBay now

OK so you do have the DBW (drive by wire) engine so it is not going to respond to the paper clip.

If my suspicion that there is something wrong with the throttle pedal potentiometer is correct then it isn't going to be possible to do the pedal test so I am hoping that there is someone local to you with Tech 2 who might be prepared to plug in and read live values.

[prestigetravel]

Right I'm sorely tempted to sort ecu. Anyone know where I can get it repaired at a sensible price? If not I've read somewhere on here that you have to change several parts of buying a second hand ecu. Any help appreciated.

[Marks DTM Calib]

So, you can (eventualy) start the car and then pressing the accelerator pedal....nothing happens?

[prestigetravel]

Yes that's right it revs up about 100rpm from tickover. I've just spoken to an ecu specialist I found online in London and he's told me to check fuel pump relay as common fault and also wiring around diagnostic plug. Says if relay faulty can cause no eml lights and not to rev up!!?! Any idea which is the fuel pump relay ?

[prestigetravel]

I have found an ecu on a breaker. What parts do I need altogether? Also the main number which is 0261206490 is identical to mine but some of the other numbers after are different, are these just serial numbers? Will an ecu off an automatic be ok as mine is a manual gearbox?

[Marks DTM Calib]

Yes that's right it revs up about 100rpm from tickover. I've just spoken to an ecu specialist I found online in London and he's told me to check fuel pump relay as common fault and also wiring around diagnostic plug. Says if relay faulty can cause no eml lights and not to rev up!!?! Any idea which is the fuel pump relay ?

Well ignore him....hes talking shite....if either the fuel pump oo ecu relay were caput then it would not run

Does your ecu light work?

[Marks DTM Calib]

I have found an ecu on a breaker. What parts do I need altogether? Also the main number which is 0261206490 is identical to mine but some of the other numbers after are different, are these just serial numbers? Will an ecu off an automatic be ok as mine is a manual gearbox?

STOP.....lets diagnose this rather than run down blind alleys

[prestigetravel]

the eml bulbs do work but not when key is at position 2 and engine not running. the one with a spanner flashes briefly when car decides to start eventually, and once running the other plain engine one stays illuminated constantly. have spoken to everyone i know who are mechanics still as i was a mechanic myself for several years many moons ago and they all are saying ecu and maybe throttle potentiometer. i am tempted to take it to local vx dealer which is 12 miles away at 30mph as they quote £32.50 for tech2 diagnosis.
previous owner had diagnosis but showed no read, vx tell me thats because eml's not illuminated at position 2 and with tech2 they can read on live run when running as light then is illuminated. any ideas?

[Marks DTM Calib]

the eml bulbs do work but not when key is at position 2 and engine not running. the one with a spanner flashes briefly when car decides to start eventually, and once running the other plain engine one stays illuminated constantly. have spoken to everyone i know who are mechanics still as i was a mechanic myself for several years many moons ago and they all are saying ecu and maybe throttle potentiometer. i am tempted to take it to local vx dealer which is 12 miles away at 30mph as they quote £32.50 for tech2 diagnosis.
previous owner had diagnosis but showed no read, vx tell me thats because eml's not illuminated at position 2 and with tech2 they can read on live run when running as light then is illuminated. any ideas?

Because they dont have the balls to say they dont know!

Right, unplug the MAF sensor and see what it does.

[dbug]

Try starting it with MAF disconnected.  If it starts and revs you need a new MAF sensor!

As I said earlier - from personal experience!

[prestigetravel]

did it yesterday,just tried again, makes no difference

[Marks DTM Calib]

Ok, pop the air pipes off the front of the plenum and try starting it up....as somebody presses the throttle pedal, observe the throttle butterflies