Technical Fiat multipla 2010 sometimes doesn't start

[Elisafunforlife]

Hi guys I have a problem with my car and I don't know what's the real issue because sometimes it starts normally and sometimes doesn't start at all, today I waited 1 hour then it started, I changed battery with a brand new one but it didn't solve the issues the car uses petrol/methane

 

[Automods]

You say doesn’t start, so you put the key in and try to start.

Do the lights come on the dash?
Does it crank and not start.


Thanks

 

[Elisafunforlife]

You say doesn’t start, so you put the key in and try to start.

Do the lights come on the dash?
Does it crank and not start.


Thanks

Yes the light comes on on the dash and it cranks but it doesn't start, after waiting 30 min or 1 hour it starts normally

 

[varesecrazy]

Yes the light comes on on the dash and it cranks but it doesn't start, after waiting 30 min or 1 hour it starts normally

Does the image of a car /key (yellow /giallo)
light then go out?

That's the immobiliser

 

[Elisafunforlife]

Does the image of a car /key (yellow /giallo)
light then go out?

That's the immobiliser

Yes the light goes out

 

[spudit2003]

Common issue on the diesels is the crankshaft sensor, this usually means it wont start when hot. You can diagnose it with MultiScan, but if its not starting sometimes when hot, its probably that. It's not a hard job, part isn't too expensive. Put front of car on axle stands, find sensor at back of engine, undo one bolt, wiggle out the sensor (held in with an o-ring), put new one in and replace bolt. A garage could do it very quickly, theres literally nothing else to unbolt to access.

 

[varesecrazy]

Hi guys I have a problem with my car and I don't know what's the real issue because sometimes it starts normally and sometimes doesn't start at all, today I waited 1 hour then it started, I changed battery with a brand new one but it didn't solve the issues the car uses petrol/methane

Does the motor turn with the key..

Or just get the oil and battery lights?

 

[Elisafunforlife]

Common issue on the diesels is the crankshaft sensor, this usually means it wont start when hot. You can diagnose it with MultiScan, but if its not starting sometimes when hot, its probably that. It's not a hard job, part isn't too expensive. Put front of car on axle stands, find sensor at back of engine, undo one bolt, wiggle out the sensor (held in with an o-ring), put new one in and replace bolt. A garage could do it very quickly, theres literally nothing else to unbolt to access.

"petrol/methane" its not diesel, this happens during winter too when the weather is cold, even now at night.

Edit: forgot to mention that sometimes in the morning when its very hot it starts at first try and same with cold weather its like very random, whenever I wanna use the car I just have to hope it starts.

 

[Elisafunforlife]

Does the motor turn with the key..

Or just get the oil and battery lights?

the dashboard just lights on normally and the car keeps cranking (which is why I suspected the battery at first but it's not the battery) tried to press the pedal while it cranks but nothing to do I have to wait for some time in order for it to start