I have a Punto mkI 60 SX which has trouble starting when the engine is warm. It also sometimes stalls when running idle. It always starts from cold and usually start when at high temperature.
I've taken it to a Fiat dealer to have an ECU diagnostics carried out but they found no faults at all! They had a feeling that it could be the TDC sensor but that was also tested and found to have no faults.
Let me tell you what happens when I try to start it: The starter turns the engine over but it does not fire up. With every consecutive try it seems a little more eager until it eventually does start. Sometimes when I let go of the key the engine rumbles for a couple of seconds and stalls and sometimes it does actually start. The garage could not find the fault without being able to recreate the symptoms and of course by Sod's law it worked fine when they looked at it!
Anyway, I've spoken to somebody who knows a thing or two about cars and they suggested it might be a faulty lamda sensor - it might be that the sensor is reading too much fuel in the exhaust system and preventing the supply of more fuel to start the engine and likewise with the stalling - it may be reducing the fuel level to a point where it stalls.
I've asked every mechanic within a 10 mile radius and none of them know what the problem is!!! Has anybody here had any similar problems? Does anyone know what I should do?!
Would appreciate any suggestions.
Thanks.
I've taken it to a Fiat dealer to have an ECU diagnostics carried out but they found no faults at all! They had a feeling that it could be the TDC sensor but that was also tested and found to have no faults.
Let me tell you what happens when I try to start it: The starter turns the engine over but it does not fire up. With every consecutive try it seems a little more eager until it eventually does start. Sometimes when I let go of the key the engine rumbles for a couple of seconds and stalls and sometimes it does actually start. The garage could not find the fault without being able to recreate the symptoms and of course by Sod's law it worked fine when they looked at it!
Anyway, I've spoken to somebody who knows a thing or two about cars and they suggested it might be a faulty lamda sensor - it might be that the sensor is reading too much fuel in the exhaust system and preventing the supply of more fuel to start the engine and likewise with the stalling - it may be reducing the fuel level to a point where it stalls.
I've asked every mechanic within a 10 mile radius and none of them know what the problem is!!! Has anybody here had any similar problems? Does anyone know what I should do?!
Would appreciate any suggestions.
Thanks.