hi folks, i got a mk2 y reg 2001 1.2 punto and recently the car has developed intermittent start problems and when it does start the engine management light stays on. Basically when i put the key in the ignition and turn it the car just turns over and it won't start. the immobiliser key symbol goes off along with the other lights apart from the ecu light which stays on.
bizzarely a few days ago of days i noticed a link between the fuel pump and the actual starting of the car. from my understanding of things, when the key is in the start position it should trigger the fuel pump and i distinctly remember not hearing the faint humming/buzzing noise associated with the fuel pump activity when the car just turns over. however on all occassions when i've heard the fuel pump humming the car starts perfectly, even though the engine management light stays on.
when the problems first started, i took the car to a local garage and they put it on a diagnostic computer and the following codes came up
p0201..injector cylinder 1 circuit
p0202.. " " " " 2 "
p0203.. " " " " 3 "
p0204.. " " " " 4 "
p0351.. ignition coil 1 circuit
p0352.. " " 2 "
p0135.. 02 sensor heater circuit bef.cat
p0141.. 02 sensor heater circuit after.cat
from their investigations the garage recommended changing the coil packs and resetting the ecu. i got hold of two coil packs from a specialist fiat breakers and had them changed and the ecu reset. the car started well and worked okay for about a week and then the same starting problems began again.
i've checked all fuses and visible relays as well as the connectors for the fuel pump under the back seat and they all seem fine. i spoke to my local fiat and even they didn't seem to have a clue apart from their advise for me to check the ignition modules. what i'm finding the most frustrating is this link between the fuel pump and the actual starting of the car. could it be a faulty ecu not sending out the correct signals to the fuel pump on start up? could it be a faulty fuel pump relay fuse? if so where is is located? the handbook was totally useless at revealing this. could it the fuel pump itself? i doubt it as once the car starts, it works wells. could it even be the ignition barrel itself?
is there anybody out there who has ever experienced this? if so please advice accordingly.:bang:
bizzarely a few days ago of days i noticed a link between the fuel pump and the actual starting of the car. from my understanding of things, when the key is in the start position it should trigger the fuel pump and i distinctly remember not hearing the faint humming/buzzing noise associated with the fuel pump activity when the car just turns over. however on all occassions when i've heard the fuel pump humming the car starts perfectly, even though the engine management light stays on.
when the problems first started, i took the car to a local garage and they put it on a diagnostic computer and the following codes came up
p0201..injector cylinder 1 circuit
p0202.. " " " " 2 "
p0203.. " " " " 3 "
p0204.. " " " " 4 "
p0351.. ignition coil 1 circuit
p0352.. " " 2 "
p0135.. 02 sensor heater circuit bef.cat
p0141.. 02 sensor heater circuit after.cat
from their investigations the garage recommended changing the coil packs and resetting the ecu. i got hold of two coil packs from a specialist fiat breakers and had them changed and the ecu reset. the car started well and worked okay for about a week and then the same starting problems began again.
i've checked all fuses and visible relays as well as the connectors for the fuel pump under the back seat and they all seem fine. i spoke to my local fiat and even they didn't seem to have a clue apart from their advise for me to check the ignition modules. what i'm finding the most frustrating is this link between the fuel pump and the actual starting of the car. could it be a faulty ecu not sending out the correct signals to the fuel pump on start up? could it be a faulty fuel pump relay fuse? if so where is is located? the handbook was totally useless at revealing this. could it the fuel pump itself? i doubt it as once the car starts, it works wells. could it even be the ignition barrel itself?
is there anybody out there who has ever experienced this? if so please advice accordingly.:bang: