wont start

check for a blown ECM fuse, also check that the globe for the check light has not blown, start here

https://www.2carpros.com/articles/car-cranks-but-wont-start

falt code no 1 injector circuit open. changed injector same result.check for fuel pressure at rail plenty of fuel. plugs dry after much winding.Fitted from ebay used ECU, Body computer, speedo and chip in key,all security functions work ie cent locking etc reset codes sam problem!!!!!! any ideas ?

Check for broken circuit between injector and ECU.

Tested all injectors with a test lamp no power when cranked how about crank sensor although it does not register as a fault.

You mentioned cylinder # 1 is not firing, how can the engine run without any power to the injectors?

Our database does not have any information on your vehicle but generally most injectors have power supply to them with ignition on and while cranking. The PCM would ground the circuit according to signals from the cam position sensor.

Yes fixed it it was the cam sensor thanks.

After 10 mins running, the alternator warning light comes on, my rev counter and speedo drop to zero and intermittently come back on again, (alt light stays on) then if i stop engine, car wont start again, (although turns over fine) until engine is cold again. My battery voltage is 14,4 volts when running and 12,5 ish when engine off. Any ideas?

try replacing the alternator ,, it may be faulty when hot and not chargeing ... but chargeing the battery again once cooled down !!

You're very welcome Dusty Dave. Glad we could be of help.

Closing thread.

Thanks for your reply, I was sort of disregarding the alternator as when Ive got the fault on running engine Im getting a higher battery voltage than when the engine is stopped. Is it possible for this if alternator isn`t charging?

14.4 volts with engine running is a good alternator ..if the battery/alternator light is
ON and you are still getting 14.4 volts at the battery then you must have a bad wire somewhere ? does the car show the MIL (malfunction indicator light) on the dash display !! have you checked for any fault codes ?

No other lights showing and no faults have been registered or stored. What I find strange is fact that car wont start for about 3 hours after the fault shows.

My car had exactly the same problem with the speed dial and battery warning light, also the traction control light was on too.
Went to the Vauxhall dealer, non of these things were actually faults (happened to find an oil leak while doing this though) they reset the fault codes and it was fine for about a week. Then the oil light came on, apparently related to not resetting a fault code when fixing the leak, which was then sorted. Now, a day later the battery and traction control lights are on (intermittantly) again, but this time (so far) the speedo's ok.
Did you ever get to the bottom of this problem? It would be nice to be able to trust the warning lights again.

Thanks for your reply, Im still not at the bottom of the problem and car has been in and out of Vauxhall garage over the past month. Now waiting on new ECU - engine control unit (for last 2 weeks) to see if problem is solved.

I have been struggling to start my car . When I put the key in the engine ticks over but I have to give it gas to properly start it. when it does start it runs okay . I have changed the spark plugs that did not help, then I changed the air filter that also did not help. It normally takes two or three attempt before it start properly, but the engine is starting.

[quote:1965e12b82="soniacaldwell"]My car had exactly the same problem with the speed dial and battery warning light, also the traction control light was on too.
Went to the Vauxhall dealer, non of these things were actually faults (happened to find an oil leak while doing this though) they reset the fault codes and it was fine for about a week. Then the oil light came on, apparently related to not resetting a fault code when fixing the leak, which was then sorted. Now, a day later the battery and traction control lights are on (intermittantly) again, but this time (so far) the speedo's ok.
Did you ever get to the bottom of this problem? It would be nice to be able to trust the warning lights again.[/quote:1965e12b82]

Sonia, Car now OK after REPAIR of my ECU as Vauxhall dealer couldnt get new ECU. Car now traded in.

we have no information on this car as it is not sold in US, but check fuel pressure with a gauge may be low. See link.
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

the battary light comes on then when it gets warm the speed plays up and it doesnt start

Has Batt been checked out ? and has ALT output been tested? if not that is a good place to start

Yes tested them thay seem ok, strange how it dnt want to start wen it's warm??

No start engine warm indicates High starter draw due to internal bearing wear or maybe bad ground

my immobiliser keeps tripping in and I have to stop,switch off and restart.It is happening every five minutes whilst driving and will only idle for about a minute

if the vehicle is idling for 1 minute it is not the iimoboliser causing this fault !! check replace the fuel filter !!