Vauxhall Astra will not start

Many possible causes .This is from Astra forum re. diagnosing fault yourself and seeing what codes are shown . Never tried it , so can't tell if it works or not .


01-07-2008, 14:34 #2
GeordieBandit
North East RO




Join Date: Jan 2006
Location: North East England Drives: 5dr Turbo Mk4 & Slammed Combo
Posts: 15,711




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you can self diagnose faults on Z series engine contrary to public opinion.


When you're ready I'll begin.....

With keys out of ignition - press both brake & accelerator pedal at same time and keep them pressed to the floor....

insert key and turn to 2nd click - ignition on but DONT START THE ENGINE

Keep both pedals pressed throughout the procedure....

the EML will flash just like previous models using the paperclip

You will probably find the light flashes 10 times first then a pause then another number, a pause, another number, a pause then another number of flashes.

I say 10 times for the first one as 10 flashes = a ZERO on the fault code and most engine related faults range from P0001 to P0999

If for instance u have the following sequence

10 flashes
pause
3 flashes
pause
10 flashes
pause
10 flashes

this equals 10,3,10,10 which in turn equates to 0,3,0,0 or P0300 which in turn is "Multiple cylinder misfire"

10 is the only number that becomes another number
1-9 flashes remain a 1-9 code if that makes any sense




I did this last night on a members car and it came up trumps....even when both my code readers didnt diagnose the fault (one ebay £20 special
and the other £300 one!)

If all else fails then grab ur self a code reader for future diagnostics.

£25 will get u a good one suitable for standard OBD2 models like AstraG from 00-04
http://cgi.ebay.co.uk/OBD2-KKL-OBD-2...2em118Q2el1247


£30 will get u the same as above but with the addition of CANBUS applications such as latest generation of Vauxhalls ie Astra H, Vectra C etc etc
http://cgi.ebay.co.uk/CAN-Bus-OBDII-...2em118Q2el1247

is the engine warning light flashing if yes you may have lost the transponder chip out of the key. they sometimes fall apart and it can drop out

Thanks for the info
Got more info now ....not the keys have tried both still will not work
Tried the two pedel trick all lights go out and stay out ....dont understand that bit
Had the feul pump checked and ok
Had the coil pack checked all ok
I have had to take the battery off to charge due to all the attempts to start ...Might just reset everything when it goes back on ....you never know ???????

i have a v reg astra 1.6 sport 16 valve ,,the engine has been replaced with a 1800cc before i bought the car ,,car has been running a bit jittery when driving under 30mph about 70% of the time,, over this speed it was fine ,my engine light is on 90% of my driving time i,ve fitted new plugs ,yesterday i drove to town when i got home i took out my key to lock my security gate ,cars alarm went off on it,s own,i turned off alarm but could not get the car to start ,my battery has a power indicator that was red meaning it was knackered since then i,ve bought a new battery car tries to start but wont catch any help would be greatly appreciated