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self start problem

Discussion in 'Engine Compartment' started by KAMPARATH, Oct 18, 2019.

  1. KAMPARATH

    KAMPARATH Timido

    Messages:
    3
    Location:
    INDORE
    I am facing a peculiar problem in my punto emotion diesel, self start is not working after 10 to 15 km travel. self start will start to work after half an hour or so. once temperature needle comes down from half mark. No error signal is appearing in the dash board. I checked battery and it is OK then changed earth wire still problem exists. there is no problem in self start when engine is cool. Please suggest any solution
     
  2. limraj

    limraj Esperto

    Messages:
    1,150
    Trivandrum / Bangalore
    Linea 1.3
    @KAMPARATH
    I faced similar problem and I had to change the starter.
    However, I am not too sure if that is the root cause. Please check with your mechanic at FNG/FASS.
     
  3. naruf1

    naruf1 Amatore

    Messages:
    197
    Location:
    Namma Bengaluru
    I could not follow what you meant by self start? How do you start the car if it is stopped at a traffic signal after driving for 10-15 kms? (No pun intended).
     
  4. naruf1

    naruf1 Amatore

    Messages:
    197
    Location:
    Namma Bengaluru
    The reason I ask is to enable better diagnosis. Apart from the starter sticking in hot condition, it could also be due to an engine timing or any sensors related to engine timing. Would be better to take the vehicle for a diagnostic check.
     
  5. limraj

    limraj Esperto

    Messages:
    1,150
    Trivandrum / Bangalore
    Linea 1.3
    When I faced this problem, I took my car to FASS. They did not mention anything of sensor/timing issues.
    They asked me to change the starter. I did. Now, after about 1.5 years, I am facing starting problem again. Only difference is that, car starts in 2nd or 3rd crank. Or may be 4th if it faced to heavy rains.
     
  6. naruf1

    naruf1 Amatore

    Messages:
    197
    Location:
    Namma Bengaluru
    The starter motor are usually tested for few million operations (One from a batch in production is used for endurance tests). Repeated starting problem could indicate an issue with cam or crankshaft position sensor. Please see this link ,read the Function section in the article "The first sign of crankshaft sensor failure, usually, is the refusal of the engine to start when hot but will start again once the engine has cooled.". You may find one for your car here.
     
    limraj likes this.
  7. limraj

    limraj Esperto

    Messages:
    1,150
    Trivandrum / Bangalore
    Linea 1.3
    Informative. Thank you.
    I would suspect crankshaft sensor failure. However, to ascertain I will take it to FASS. Not sure whether KHT or PPS would be competent to do it in Bangalore.
    Does any error pop up in diagnostics?
     
  8. naruf1

    naruf1 Amatore

    Messages:
    197
    Location:
    Namma Bengaluru
    Cannot be sure of the error in diagnostics. Few read in other forums suggest, there could be an synchronization error in the cam and crank shaft position in the ECU. May be need advance level of debug from the OBD. There should be some method of resistance measurements, after removing the sensor, to check if the sensor is faulty, using a multi meter.

    OT: Cannot be sure if KHT or PPS would be competent enough:arghh:. Which leads me to believe, we should be able to rent out garage with tools in Bangalore to hire and service by self.
     

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