Question about 2003 Kia Optima

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Car wont start. i changed the crank sensor i jump a tooth on the belt i fixed that

I have every thing lined up but the timing mark is not lined up.do i need to install the alternator belt and power steering belt to start the car? please help

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A car will start and run without an alternator as long as the battery is is good condition and fully charged, but it is advisable to install the alternator belt, for if you do get the engine running, and while it's idling and you're checking out other bits and pieces, the engine is trickle charging the battery, and saves you time to install the belt later.

As for aligning the timing marks,,, they have to be aligned otherwise all sorts of problems will arise *IF for some fluke* the engine does start.

Posted on Mar 31, 2014

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Posted on Jan 02, 2017

  • 24 Answers

SOURCE: my alternator belt broke i

I am not sure where the crank position sensor is on your car but when the alternator belt broke on my Buick it trashed the crank sensor that is located next to the crank shaft pulley. The computer needs the crank senor to know the position of the crank shaft. If the sensor is bad the car will not start.

Posted on Nov 30, 2008

  • 1214 Answers

SOURCE: replacing the alternator belt on 2001 kia spectra

Then you don't take anything off. There will be a spring loaded idler that tensions the serpentine belt. Take a socket or long 12 point wrench and attach to the center bolt of the tensioner, then rotate the idler wheel away from the belt, take the belt off. Slowly release the spring tension of the idler.
The 2nd belt should be set up the same way.

Posted on Jan 23, 2009

  • 27 Answers

SOURCE: MY fan belt broke now the car won't start.

if ur fan belt broke n ur water pump is run by it look out knock senser usually controls ur injector pulse so yea it will not start crank too cam no

Posted on May 25, 2009

jturcotte
  • 8175 Answers

SOURCE: I can not figure out how to loosen the power

this one is tricky. Got this from autozone.com:


  1. Loosen bolt A , nut B and nut C
  2. Loosen tension adjusting bolt D
  3. Remove the drive belt
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Posted on Sep 07, 2010

  • 4336 Answers

SOURCE: "JUMPED' time. Fixed. when started back up, it

This sounds like a low voltage issue. Check the system voltage while running, need 13.8 to 14.6 or so. Have the battery terminals cleaned and load test the battery. If the battery voltage drops too low during startup, that can cause the clock to loose it's time.

Posted on Nov 01, 2010

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I assume that you mean the cambelt idler bearing.Ok if you are sure that the timing is correct for all cams(DOHC)?.Then the problem may be bent valves caused by the bearing collapse allowing the cams to go out of timing and cause valve strike.
I would recheck the timing,ensuring all marks line up precisely,the only one that should look 1/2 a tooth out is the crank.Genuine belts are always preferred for these as they have all the markings on the belt to align all the cams and crank,some other suppliers do not have this
I hope that this helps you,or get back to me with your findings.

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98 Taurus P0340 code still present after replacing camshaft sensor and synchronizer. Car not starting all the time. I do not see the spark when car will not start. Then replaced the crank sensor. Still...


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the marks for th cams are on the tin stuff behind the gears study it for a bit and nyoull see them the mark for the crank pully is on the case onthe bottom of the crank pully just of to one side

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I have just replaced the timing belt and made sure all timing marks are in line and the car wont start only turns over with occasional "hiccup" chilton's manual doesnt give me any hints where to retrace my...


If your marks are all accurate, then the only thing you could have done wrong was that you werent at TOP DEAD CENTRE when you replaced the belt... Oh another thing, that is common are you sure you didnt jump a tooth while putting it back on, meaning your timing is out by a single tooth... How accurate were you with the marks etc... Good luck...

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