Hi all, hoping someone can throw some ideas up on where to look next:
My lads car is a 1.4 Punto Evo 2010 and has had an intermitent misfire for a couple of weeks and thrown the codes pointing to missfire on a couple of cylinders.
Yesterday it finally gave up the ghost and now it starts up but then immediatley stalls.
I cleared the codes and then tried again and its showing P0353 & P0352
I tested the coil pack which came back good and then swapped it with my wifes 500 1.2 which by luck has the same coil pack.
Her car ran fine using the Punto's Coil pack so that rules that out.
I then pulled the plugs which look like they were the ones originaly fitted some 70k miles ago!! anyway, changed these for some lovely new ones and still the same issue.
I then used one of the old plugs to check each HT lead to the engine block and all 4 leads have a spark so i'm guessing this rules out the Primary ECU circuit.
One thing i did notice is that when the car stalls and the ignition is still switched on, there is a loud ticking noise coming from near the throttle body at the back right of the engine bay. Not sure if this normal or not or what it is.
Anyway, thinking it may now be the Crankshaft position sensor but presume this would have thrown the code pointing to this.
If anyone has any other ideas I would much appriciate your help.
Kieran
My lads car is a 1.4 Punto Evo 2010 and has had an intermitent misfire for a couple of weeks and thrown the codes pointing to missfire on a couple of cylinders.
Yesterday it finally gave up the ghost and now it starts up but then immediatley stalls.
I cleared the codes and then tried again and its showing P0353 & P0352
I tested the coil pack which came back good and then swapped it with my wifes 500 1.2 which by luck has the same coil pack.
Her car ran fine using the Punto's Coil pack so that rules that out.
I then pulled the plugs which look like they were the ones originaly fitted some 70k miles ago!! anyway, changed these for some lovely new ones and still the same issue.
I then used one of the old plugs to check each HT lead to the engine block and all 4 leads have a spark so i'm guessing this rules out the Primary ECU circuit.
One thing i did notice is that when the car stalls and the ignition is still switched on, there is a loud ticking noise coming from near the throttle body at the back right of the engine bay. Not sure if this normal or not or what it is.
Anyway, thinking it may now be the Crankshaft position sensor but presume this would have thrown the code pointing to this.
If anyone has any other ideas I would much appriciate your help.
Kieran