Starting issue

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Oscar the KW, Jul 26, 2021.

  1. Oscar the KW

    Oscar the KW No Filter

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    2001 Volvo with an N14. More often than not it will crank slow or not crank long enough to start. Sometimes cranks perfectly normal. Four new batteries and cables appear fine. Any thoughts?
     
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  3. Arctic_fox

    Arctic_fox Heavy Load Member

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    Sounds like a bad starter. One in a 389 indrove did the same thing just before it failed.
     
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  4. xsetra

    xsetra Road Train Member

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    Starter wearing out.
     
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  5. Oscar the KW

    Oscar the KW No Filter

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    I’ve never had one do that before, but it does make sense.
     
  6. Magoo1968

    Magoo1968 Medium Load Member

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    Being a 2001 clean all battery connections and grounds at both ends some guys add a extra ground to engine block . After that troubleshoot if problem persists.
     
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  7. xsetra

    xsetra Road Train Member

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    Jump your starter direct, bypass supply cables using jump cables. Could be your cable or ends are corroded under the insulation.
     
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  8. AModelCat

    AModelCat Road Train Member

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    Multimeter between battery positive post electrically furthest from the starter and the positive wire on the solenoid stud going into the starter. Crank the engine and record the voltage drop.

    Now repeat the process, measuring between the starter frame (or starter ground if equipped) and the negative battery post on the furthest away battery. Crank engine and read the voltage.

    Add your 2 measurements together. If it exceeds 0.7 volts you've got a cable or connection issue (remember we're reading voltage loss, not total voltage). The side with the highest voltage loss is the issue.

    If voltage loss is within spec and the supply voltage is good, chances are its a worn starter.
     
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