My fiat Grande punto 2009 1.2 petrol is misfiring but no engine light on dash. so I change coil pack and leads and it still misfiring. any can help pls
coolant is all goodHi
Is the coolant level ok?
coolant is all good I haven't checked the sparks plug but I have a feeling it a faulty ecu. if it is a faulty ecu all I would need to do is buy a new one and will it need programing or anything ?And you also changed the spark plugs and the ht leads are routed correctly so that they don't have contact with each other? Also they're properly installed, not loose or anything like that.
How about the pcv hoses, one from the airbox and the other which goes into intake manifold? As suggested above, check coolant level and check for signs of leakage. If the coolant had been low, the headgasket fault is possible with high running temperature.
The last thing is a faulty ECU which might become damaged for running a long time with poor spark plugs. Did it have poor plugs?
Take out the plugs..coolant is all good I haven't checked the sparks plug but I have a feeling it a faulty ecu. if it is a faulty ecu all I would need to do is buy a new one and will it need programing or anything ?
i will check the spark plugs when im next free thanks. by any chance do u know why sometimes i start my car it makes a loud screeching noise and then i need to start the car again.First change the spark plugs to see if it helps.
Starter motor lacking power ( poor power supply circuit - as above by eeeno) when turning the keydo u know why sometimes i start my car it makes a loud screeching noise and then i need to start the car again.
i changed the starter motor and it didn't help i probably buy new batteryVery difficult to guess, but it could be a failing starter motor, poor battery,poor main earth.
You asked what the noise was.. so why change it?i changed the starter motor and it didn't help i probably buy new battery
Sorry for late reply. I changed the spark plugs just now I’m going to go for a little drive and see if it helped. Spark plug 1 is on the leftOh sorry for not being too specific. Start from the cheapest, buy new earth lead (chassis-battery-gearbox) and then recharge the battery. It's a very bad idea to change original parts when they're not completely broken. Original parts can last the lifetime of the car, when spare parts are failing every other year. I did that myself but then understood that ultimately it's very expensive way to fix things that don't really need to be fixed.
How about those spark plugs? Did you change them, does it run better now? You should get the cylinder pressures tested to know the condition of the engine. All of this would be in vain if the engine was worn out. Does it consume a lot of oil? Old cars do that if the car had been on long-life oil program