Question about 2005 Kia Optima

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Car won't start and we've tested everything

Check engine light has come on. Car won't start at all now after a long time of being hard to start. It has been determined that I need a new computer so I am trying to find out where I get one and how I go about finding what, when, where and how to get a computer/board for my car.

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Auto zone has a cheap one (but it can not diagnose everything).. the high end one can range up to 9,000 and over

Posted on May 28, 2009

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Posted on Jan 02, 2017

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Obd2 code p0562


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OBD2 CODE READER P0562


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My 2000 GMC Jimmy won't start


You will have to pinpoint what the engine is missing...
- Spark
- Fuel
- Compression

All three of these are tested when the engine is being cranked over. There are two way of checking for fuel. Fuel pressure and fuel trigger. Both are very important and must be present for the engine to start. Fuel pressure is self explanatory. You just hook up the gage and see what the reading is. Fuel trigger is check with a noid light. The injector gets unplugged and the noid light gets plugged in to the injector clip. With the engine cranking over, this light must blink. This is the signal to the injectors from the computer. You can have all the fuel pressure in the world, but it wont matter if the injector is not pulsing gas into the cylinder like it should.

Compression tester, spark tester, fuel pressure gage and noid light are all accessible at your local auto store. All three tests play a very important part in diagnosing a no start condition. Be extremely careful when doing these tests.

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Mar 01, 2012 | GMC Jimmy Cars & Trucks

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I am hoping someone on here can help me with my problem...My check engine light came on my 2003 Chrysler 300 M special edition and also wouldn't start at times for up to 30-45 minutes at a time, and...


Have you had the battery changed since you had the car. Have that checked for a full charge and no dead cells. Always have the air-conditioning completely off when starting the car. The starter takes a lot of amps to turn over and having the AC on doesn't help.

and another reason is the code didn't clear out completely. this tool can help you test the code.

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Hi I've got a rx8 192, the other night i turned the key ok this bit is my fault but i never held the key long enough so had to turn the key for a second time but this time the car started but it...


Thanks for choosing FixYa and welcome. Usually a flashing light like yours means the engine has internal damage. Now that it is not doing that, all I could think of is the ECM felt like it was necessary to flash the check engine light. It could be many things, from plugs and wires to ignition calculations. The best thing to do is have your car put on a diagnostic machine. If the check engine light comes back on, take it to Autozone or Advanced asap to have it tested for error codes. The timing belt/chain may have slipped. You could have bad spark plugs/coils. These usually result in backfire. Without the proper testing, it is hard to determine a starting point. Check all your hoses and electrical wires for damage and check all your fuses. When you can, get it put on the machine.

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there maybe a few things, how many miles, check the timing belt and timing.

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I WOULD GUESS IF YOUR STARER IS KICKING IN AND THE DOESN,T START IT WILL BE YOUR TIMING BELT MAY HAVE JUMPED OR BROKE . IF THE CAR DOES THIS IT SOMETIMES WILL RUN BUT WILL SOUND LIKE IT IS GOING TO FALL APART OTHER TIMES IT JUST WON,T START. YOU CAN PULL A SPARK PLUG AND TEST IT TO SEE IF THERE IS SPARK BY REMOVING AND SLOWLY TURNING IT OVER

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