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Omega Help >> Omega General Help >> 2.5 td wont start code 34/85
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Message started by gateshead on 16. Jan 2011 at 17:28

Title: 2.5 td wont start code 34/85
Post by gateshead on 16. Jan 2011 at 17:28
hi guys i have a 1995 2.5td  it wont start it has a flashing orange light on dash looks like a tap i have done a paper clip test it comes back with 34  Injector Timing Out Of Range and 85 Immobiliser Wrong Signal. my car does not have a immobiliser. does any body no were to start with these codes. cheers kevin


Title: Re: 2.5 td wont start code 34/85
Post by charlie on 16. Jan 2011 at 17:39
When cranking the engine over does the eml light flash? I believe all omegas have immobilizers

Title: Re: 2.5 td wont start code 34/85
Post by charlie on 16. Jan 2011 at 17:47
when the eml flashes it means that the immobiliser is still engaged,have you being doing anything with the key

Title: Re: 2.5 td wont start code 34/85
Post by gateshead on 16. Jan 2011 at 18:13
the light flashes constantly when i turn the key to on and it flashes constantly when trying to start. also the abs light flashes when trying to start it as well. i am 100% sure the car has no immobiliser they did not start using them untill 1996 its just a standard key with nothing inside the plastic bit in the key it always comes apart. any ideas ware to start looking for this problem car worked fine parked it up used it again about 2 hours later and car wont start

Title: Re: 2.5 td wont start code 34/85
Post by charlie on 16. Jan 2011 at 18:27
94 to 96 cars used the ir system ie key plus seperated fober so still shouldhave an immobiliser  where a car of this age get the signal from,i dont know :y

Title: Re: 2.5 td wont start code 34/85
Post by Kneepad on 16. Jan 2011 at 18:42


Have you a spare key you can try?

Title: Re: 2.5 td wont start code 34/85
Post by hoofing it on 16. Jan 2011 at 19:02
Are you using the fob key if so open it up carefuly the micro chip might of slipped off its holder :y

Title: Re: 2.5 td wont start code 34/85
Post by gateshead on 16. Jan 2011 at 19:15
i only have the one key no remote locking. the key is just a normal key with no transponder inside. the plastic bit on the key always comes apart and there is nothing inside. is the injector timming run off the timming chain or the aux belt its maybe sliped a tooth

Title: Re: 2.5 td wont start code 34/85
Post by Kneepad on 16. Jan 2011 at 19:29


The ECU uses the input signals from the start of
injection sensor, together with signals from the
crankshaft position sensor.

Start of injection sensor is incorporated in injector #4.

Title: Re: 2.5 td wont start code 34/85
Post by gateshead on 16. Jan 2011 at 19:44
kneepad thanks for reply but your info is to technical how can i use it to proceed forword

Title: Re: 2.5 td wont start code 34/85
Post by Kneepad on 16. Jan 2011 at 20:11


You could check the wiring at #4 injector or try a new injector.
It could be the crank sensor but your codes point to the immobilser.   :-/

Title: Re: 2.5 td wont start code 34/85
Post by gateshead on 16. Jan 2011 at 20:25
well its some were to start kneepad i will give it a try tomorrow

Title: Re: 2.5 td wont start code 34/85
Post by Kneepad on 16. Jan 2011 at 20:48



Double check your key. I thought there was no chip in mine until I saw this:


Title: Re: 2.5 td wont start code 34/85
Post by Omegatoy on 16. Jan 2011 at 21:18
if no chip in the key it wont start!! unless a previous owner has taped the chip to the ignition barrel or somewhere close :-[

Title: Re: 2.5 td wont start code 34/85
Post by Shackeng on 17. Jan 2011 at 09:30

gateshead wrote on 16. Jan 2011 at 18:13:
the light flashes constantly when i turn the key to on and it flashes constantly when trying to start. also the abs light flashes when trying to start it as well. i am 100% sure the car has no immobiliser they did not start using them untill 1996 its just a standard key with nothing inside the plastic bit in the key it always comes apart. any ideas ware to start looking for this problem car worked fine parked it up used it again about 2 hours later and car wont start



Is it possible that the last time this happened the chip fell out?

Title: Re: 2.5 td wont start code 34/85
Post by gateshead on 17. Jan 2011 at 10:42
thanks for the help guys, looks like its the key mine is the same as the one in pick. the plastic bit was for ever comming apart i did not relise there was a transponder in if i did i would have taped it up. will have to phone auto lock smith to day i will let you no how i get on. cheers kevin

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