2000 Hyundai Sonata I need help!

AJSMOMMA06

MEMBER
2000 HYUNDAI SONATA

2000 Hyundai Sonata Automatic

My car is now dead and won't start. At first it was just sputtering really bad (misfiring I assume). The check engine light was on and when we got it checked it said multiple misfires. We changed the plugs and wires and the temp sensor. When we took out the plugs there was a bunch of oil all over 2 of them. So we changed the valve cover gasket. A week later I was driving down the road went to hit the accelerator and something stopped working. So we tested it again and this time the crankshaft sensor came up on the diagnostic test so we changed it. Unfortunately this is not the only problem and we are now at a stand still with a dead car in the driveway. There must be something we're overlooking. Please help us figure it out! I appreciate very much anything you can offer!

Thanks for your time!
Karen

5 Replies

RACEFAN966

MECHANIC
5,029 POSTS

Ok so tell me what have you checked at this point? Do you have a scan tool or a digital multi meter? Do you feel comfortable enough to run some tests if I give you instructions on how to do them? Get back to me and we will see what we can find. Thanks.

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Wednesday, September 16th, 2009 AT 11:15 AM

AJSMOMMA06

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A buddy of mine ran a scan tool on it (I guess that's what it was) it came up a few different codes. Insufficient coolant, crankshaft sensor, random multiple cylinder misfire, and engine speed input circuit malfunction. He also did a spark plug test to see if it was getting spark and its not. Also I believe he checked the camshaft sensor and there was no power going to one of the wires. As far as other specific tests I'm not sure what else he did. I can definitely run tests if you explain how. I'm hoping we're just overlooking something minor. I appreciate your help VERY MUCH!

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Wednesday, September 16th, 2009 AT 6:55 PM

RACEFAN966

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Ok you say the camshaft sensor was tested but the crankshaft sensor was one of the codes that came up. I would like to check the crankshaft sensor. First if you would have the scan run again and get me the actual codes as this will help me to figure out which test should be run. Get back to with the P codes and we will go through then one at a time. I would like it if you could disconnect the crankshaft sensor and check resistance between term 1 (where the yellow wire connects) and term 2 (where the brown wire connects). So you will check resistance on the sensor where those wires would connect if plugged in and if resistance is not between 486-594 ohms then replace crankshaft sensor. Let me know what you find and get me the P codes.

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Thursday, September 17th, 2009 AT 9:56 AM

AJSMOMMA06

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3 POSTS

We changed the crankshaft sensor, and it seems to be working now. The camshaft sensor was the one that one of the wires was not reading anything. But would that make the car not run at all? All the codes that came up were.P0171, P0125, P0335, P0300, P0725.

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Thursday, September 17th, 2009 AT 4:48 PM

RACEFAN966

MECHANIC
5,029 POSTS

Yes a camshaft sensor can stop a car from starting. However it is odd that none of the codes point to that. P0171 lean condition bank 1, P0125 coolant temp sensor out of range, P0335 crankposition sensor, P0300 random missfire and P0725 crank position sensor. So with that I would say that the car is telling us the crank sensor is not functioning correctly. See P0335 is crank position sensor out of range and P0725 is crankshaft position circuit open. I included in the last response the test on the wiring this needs to be done to determine the crank shaft sensor is working or not. If this test proves the crankshaft sensor is working the ECM is the problem and that will need to be replaced. Let me know how it goes.