anton

I have a 1990 sapphire with a eec-iv efi system and with new only
unleaded petrol available in RSA , my car started to jurk when first
riding in morning's ( summer here) or after a long stand "about 3
hours" . checked all connectors I could find cleaned them. after
driving for about 5-10 minutes or 4 km car go as per normal no jurking-
in a carb model it would seem that the choke is not used or the timing
is wrong.

Also about 6 months ago the car started idle uneven going between 800
too 1500 rpm when idling but very intermittend -cleaned the airflow
sensor / air bypass sensor, did not help.

and just to mention had the engine overhauled just before christmas.

Any suggestions or where the self test plug is?

anton

 

ford_technical_

the self test plug is the black 3 pin connector near to the battery . plug
the test eqt' into here and you'll able to get some fault codes

(you are from the UK arnt you?)
i'm assusuming this is a sierra sapphire?

fireater

anton wrote:
> I have a 1990 sapphire with a eec-iv efi system and with new only
> unleaded petrol available in RSA , my car started to jurk when first
> riding in morning's ( summer here) or after a long stand "about 3
> hours" . checked all connectors I could find cleaned them. after
> driving for about 5-10 minutes or 4 km car go as per normal no jurking-
> in a carb model it would seem that the choke is not used or the timing
> is wrong.
>
> Also about 6 months ago the car started idle uneven going between 800
> too 1500 rpm when idling but very intermittend -cleaned the airflow
> sensor / air bypass sensor, did not help.
>
> and just to mention had the engine overhauled just before christmas.
>
> Any suggestions or where the self test plug is?
>
> anton
>
if its like any of north american fords clean the throttle plates...
they are designed to allow some air bypass and when they get dirty the
IAC opens to wide and cause uneven idle probs and stalling

anton

No I am in South africa, everything here when you buy spares it is most
of the time " sierra" spares but the odd one is sapphire.just for
interesst i have a 2.0 litre OHC (not DOHC)