help please car cutting out

[mez]

could someone please help, I have a nova 1.2i merit 1993, it cuts out when cold but runs fine once its warmed, changed the coolant temperature sensor, and checked diagnostics, which was no faults. Any advise would be great.
Thx

[Sr_nova_gameover]

is it a manul choke???

[mez]

is it a manul choke???

No it's an automatic choke

[Sr_nova_gameover]

well have a look and see if the autochoke is stuck or broken coz it mite be that i have non sum cars to get stuck or break and the it mucks about with the startin idle...

Paul

[Adam]

Try cleaning and re-oiling the idle stepper motor.

[mez]

will try both those thanks very much

[Sr_nova_gameover]

any-time

dont use easy start spray ur car will then only start usin that....

Paul

[mez]

cheers for that Paul, It's our lads first car (not legal to drive til march, so trying to get it running right before then)
, so all advise is appreciated

[mez]

well have a look and see if the autochoke is stuck or broken coz it mite be that i have non sum cars to get stuck or break and the it mucks about with the startin idle...

Paul


Dont know much about car maintenance sorry so can you tell me is the autochoke located near the throttle cable? If so how can I tell if its stuck, thanks again mate

[Sr_nova_gameover]

there are useally near the throttle boby. prob on top of inlet manifold

need help just ask mate

[Riggy]

its a 1.2i so it wont have an adjustable auto choke , its all built into the ecu ,

as ad said remove the idle stepper motor and clean and re oil

[mez]

sorry to sound thick mate, but is the throttle boby the part that you can accelerate the engine from inside the engine bay? Cheers agian

[mez]

its a 1.2i so it wont have an adjustable auto choke , its all built into the ecu ,

as ad said remove the idle stepper motor and clean and re oil


Cheers for that mate, as I am a novice and dont want to sound thick lol, I can remove it and clean it np, but what do i re oil?

[Sr_nova_gameover]

i have only work on sum old vauxhalls and sum french but lot of german cars....... and mez yeah

[mez]

thx somuch for all the advise, its a fantastic site, i cant beleive the fast responses ive had already

[Sr_nova_gameover]

any time

[Riggy]

http://www.tuneparts.co.uk/prod/is7.jpg

take of the air box and look around the injector for this

then remove and clean

[mez]

http://www.tuneparts.co.uk/prod/is7.jpg

take of the air box and look around the injector for this

then remove and clean

Thx so much will do that 2moro after work

[Adam]

Its on the front side of the throttle body.
Held by two torx screws, and has a 4wire plug.

[Jim Mcrae]

lol i have the same problem on my carb nova, dont take much notice as i thought it was part of owning a nova!

[novaco]

lol i have the same problem on my carb nova, dont take much notice as i thought it was part of owning a nova!

me too!

i rekon my auto choke is rubber ducked!!

how to i remove it to check!!

sorry for the hi-jack mez!:thumb:

[mez]

http://www.tuneparts.co.uk/prod/is7.jpg

take of the air box and look around the injector for this

then remove and clean

I took this part out as you had said, it was same part as above, only difference was the centre bit (top of pic) was extended showing the spring, is this normal or does that mean its cream crackered? Once i had cleaned and re oiled and put it back, the car started and ran (ticked over fine) for about a minute then stalled. Any more ideas please. Thx in advance!

[Riggy]

id say thats its had its day then , you could try one from a breakers yard , they will be the same on most 1.2 / 1.4 spi engines so astras/nova/corsa engine are all fine for you

infact the website lists them the same for all these models

Astra SPI 1985-1991
C14NZ
Astra SPI 1992-1997
C14NZ X14NZ
Corsa SPI 1993-2000
C12NZ X12SZ C14NZ
Astra SPI 1985-1991
C12NZ C14NZ

[SRI crazy]

hey is it an injection? coz if it is it doesnt hav a choke jus a coldstart device

[Adam]

Eh?/\

Its a single point injection and has no choke or coldstart device. Just an idle stepper motor(varying the amount of air able to bypass the throttle valve)

The spring showing on the idle motor is normal, if its just cutting out dead then i'd say its not the motor causing the problem. Does it start straight back up?
Start the engine, and when its idling fine(on its own,no throttle pedal) unplug the wiring to the idle motor.
If it stalls again same as before then you know its not the motor causing it to stall(as the ecu can no longer control the motor)

[mez]

Started engine, got it ticking over fine, pulled out plug from stepper motor, car still running fine, for longer than before, before eventually cut out. Any more ideas m8 pls?

[Adam]

Does it start straight back up after it cuts out?

[mez]

yes m8 it does, but then wont tick over

[Adam]

When you say you changed the coolant sender?
Did you change the one to the ecu(on the back of the inlet), or the one to the dashboard(top of inlet)?

[mez]

sorry this is the wife, he's just nipped out, but i said I'd keep my eye on ur advise lol, the part he fitted was one that goes to ecu as far as i know but if there is any difference i'll post in a few mins wen he gets back, (just dint want u to think we were ignoring u) lol

[Adam]

Yeah theres a difference between the two.

[mez]

He's back now m8, the difference i meant was wether the sensor was to the ecu or dash, and i was rite YAY it was to the ECU!

[Adam]

The sense to the ecu is on the back of the inlet with a 2pin plug.
The one to the dash is a small spade connector on the top of the inlet.

[mez]

the sensor i changed was to the ecu with a 2pin plug