Question about 2000 Volvo S40

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VOLVO S40 DOESNT START OCCASIONALLY

SOMETIMES THE VOLVO WONT START , TURN THE KEY DOESNT CRANK LET IT SIT AWHILE THEN IT STARTS UP HAPPENS ONCE A WEEK , LIGHTS COME ON RADIO , DOESNT SEEM TO BE A DRAIN ON THE SYSTEM! CHECKED BATT TERMINALS TIGHT .
CANT SEE STARTER SEEMS TO BE IN THE FRONT OF MOTOR UNDER NEATH ENGINE MANIFOLD
DO YOU THINK ITS A LOOSE WIRE ON THE STARTER OR A BAD STARTER ?My daughter's car has the same problem. We have now replaced the starter, battery, some kind of key sensor "antenna", and something else to do with oil filter drainage in the cam shaft, and still have the problem. Just occasionally will not start up at all. Also, when it is starting, as the day goes on and it is used more, it cranks more and more when you do start it. I'd love to hear from anyone who has solved this problem because it is becoming very time-consuming.

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  • maverell Mar 10, 2009

    Already addressed alternator...that isn't it either.

  • maverell Mar 12, 2009

    Car finally decided to misbehave while in the shop...it is the neutral safety switch.

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8 Answers

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Replace the starter relay located in the fuse panel in the engine compartment... i think on the volvo that would be near the firewall but look near the battery for the fuse panel

Posted on Mar 10, 2009

  • Roberta Smith
    Roberta Smith Mar 10, 2009

    it would be relay 14

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Hi, check the positive and ground battery wires. there may be a break in the strand in either the positive or ground wires. if possible, check the entire strand all the way to the starter and check the ground to make sure its grounded properly. next, i would run a check on the ignition switch assembly. you may have a faulty ignition switch.

Posted on Mar 12, 2009

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Maverell, depends on what fuel system you have. If its the regina/rex system, then there may be an issue with the fuel pump. If its a bosch system, there may be a faulty impulse sensor or ignition power stage issue. Its frustrating for me as a tech to have a car not duplicate the problem. I dont just swap parts and send the customer on their way. On this issue, I would have to have the car do the problem, then perform tests to see whats going on. I hope this helped.

Also check switch on the AT gear It may need adjusting or replacing. Remove the plastic cover at the bottom of the lever to reveal the switch. I think it's adjusted by 2 screws.

Thanks.

Posted on Mar 10, 2009

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My boyfriend thinks it might be something to do with a faulty alarm system. This seems to make some sense as, according to a manual I have, the alarm system can imobilize the car from starting. The last time it happened, we locked the car with the key fob, then unlocked the drivers door manually, then the car started right up... Coincidence? Maybe, but it worked.

Posted on Jan 27, 2010

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Check your immobilizer switch. You can
go to Napa or Parts store just buy the
jumpstart that overides your immobilizer
switch. Match your key to it and you should have no more problems.

Posted on Jan 28, 2011

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Hi..maybe the fuel pump.....it could also be spark plugs
Replace the Fuel Pressure Regulator which is located on
top of the motor to the right side.The fuel line plugs into it
and is held in place by a blue locking latch.
check it out..
thank u..

Posted on Mar 10, 2009

  • Hariharanath V Mar 12, 2009

    hi..check the idle speed control motor.

    try this out..

    thanks..

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This is most likely an alternator problem and you will need that replaced. If the problem still persist, check the starter. The alternator usually drains the battery.

Posted on Mar 10, 2009

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Test air intake flow sensor.

Have the car computer module (ECU ) scanned with a code reader, this will tell you if you have a wiring problem, if you have misfiring on one or more cylinders, or if a sensor or other component is faulty.

Posted on Mar 16, 2009

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SOURCE: VOLVO S40 DOESNT START OCCASIONALLY

sounds like you need a new battery, it probably isnt running enought cranking amps to start your car, try a different battery and it should start fine

Posted on Dec 22, 2008

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Posted on Jan 02, 2017

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VOLVO S40 DOESNT START OCCASIONALLY


sounds like you need a new battery, it probably isnt running enought cranking amps to start your car, try a different battery and it should start fine

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