Technical Bravo 1.6 stalling choking idling

[Mark_85]

Hello guys, i have seen many people here are willing to help & improve our cars, and i am having a problem for months . It all began when my fuel pump broke, and i have replaced it with new one. problem is this.
when i start car cold, engine keeps stalling and car stops,
with engine little warmed up ,car is stalling again, but it doesnt go off ,poor idling
with car driving , i floor gas pedal, car is choking for few seconds , and then goes like mad, after that engine is idling perfectly with no problems
I have replaced fuel filter, checked all leads for fuel delivery (still i didnt check the pressure in the system, dont have manometer), on diag it reads that the 1st or 2nd spark is missfiring (changed all sparks ,because im miserable :bang, checked air intake and its ok. Love this car but im having headaches for months. thanks for reading and sorry for bad eng. Cheers!

 

[rallycinq]

You changed the spark plugs, did you change the coil pack?

Try starting it from cold in the dark with the bonnet up. Look for any stray flashes

Cheers

SPD

 

[Deckchair5]

when i start car cold, engine keeps stalling and car stops,
with engine little warmed up ,car is stalling again, but it doesnt go off ,poor idling
Sounds like fuel delivery -blockage- air in system

poor idling
with car driving , i floor gas pedal, car is choking for few seconds , and then goes like mad, after that engine is idling perfectly with no problems
Sounds like heater broken in lambda sensor

 

[rallycinq]

i would expect the lambda to be out of circuit on a cold start up.

Cheers

SPD

 

[maddogmorg]

checked/cleaned the idle air valve?

 

[Mark_85]

thx for reply
if you meant to say coil pack for spark cables, i didnt check it, ill see if those cables are faulty

fuel delivery -blockage- air in system ... i think there is circulation in the system and all air by this time would come out from fuel tank

lambda sensor i dont know ,maybe false reading, would diag disply error

air valve , one question, is air valve- stepmotor controled by ECU ? sometimes
all those computers can screw up big!

but therefore when i drive car like lunatic for 10 minutes , it all goes normal again , its like loss of pressure and could be incorrect fuel pressure ( ecu demands highly strict 3.0+0.5% bar, i forgot to mention , when i tested my actuators on diag fuel pump worked for 15 sec, after that car would start normally ,
in case when i turn the key on ( on street ), pump works for 3 or 4 sec (normal), 1st start allways fail,2nd starts engine on with help of gas pedal,
cables or air valve is maybe a problem ,i`ll check it and come back with results

 

[Amir]

I think I had something similar with my 1.6, problem was in injectors. One of the injectors was bad and when i press my foot down it goes to 2400 rpm and stays there for a few moments and there is no acceleration, and after that it goes like well. Do you have something like that?