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Car cranks but wont start codes p0645,0508,0688

Car cranks over but wont start sometimes, usually when it sits for a hour or more. But when you try to crank it over and wont start if you turn the key completly off and turn over again it seems to start up fine. Runs fine down the road once its running.I get codes p0645, p0508, p0688 on the dash if i use the key on off three times check.

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6 Suggested Answers

  • 21949 Answers

SOURCE: car cuts off going down the road, won't stay cranked

crank sensor or fuel pump call A MOBILE MECHANIC as its not the sort of thing thats easly diagnosed from a description sorry

Posted on Nov 13, 2008

  • 61249 Answers

SOURCE: 06 pt cruiser dtc p0108,p0113,p0123,and p0508 car will not start

P0108 (M)
Manifold Absolute Pressure/Barometric Pressure Circuit High Input
MAP sensor input above maximum acceptable voltage.

P0113 (M)
Intake Air Temperature Circuit High Input
Intake air (charge) temperature sensor input above the maximum acceptable voltage.

P0508 (M)
Idle Air Control Motor Circuit Low
Idle Air Control Motor Circuit input below acceptable current.


Posted on Mar 15, 2009

  • 1 Answer

SOURCE: we have 1995 dodge dakota truck and u can be

i had the same problem. as soon as i would put it in gear, it would just stop, almost like somebody just turned off the ignition. if that is the same problem your having, or if not.. check the neutral safety switch or for loose wires or plugs. sometimes the vibration will jar them loose and cause the neutral safety switch to engage, if not. have your power control mod tested.. hope that helps your problem

Posted on Mar 22, 2009

  • 47 Answers

SOURCE: 1999 dodge durango; when i turn key the car will

either dead cell in battery or the idle air sensor or oxygen sensor going bad

Posted on Jan 18, 2010

  • 43 Answers

SOURCE: Dodge Dakota doesn't start on first attempt. Seem

Is the pressure in the fuel system not holding? Fuel pump may be failing or the filter may be bad. Sounds like you're pumping the fuel system back up to pressure before the truck will start. Like when a fuel-injected car runs outta gas and you have to prime the system before it'll start again.

Posted on Jan 30, 2010

  • 3640 Answers

SOURCE: After I drive my jeep some, if it is somewhat warm

if it shuts off after running for a while and will not restart for about 10 min,a bad crank sensor will cause this. abad crank sensor will make car shut off and not restart for about 10 min. put a scanner on to make sure. a check engine light does not allways come on. if you do not have a scanner, any auto parts store will scan it for free.

Posted on Feb 27, 2010

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