Question about Hyundai Motor 2004 Sonata
I have a 2004 sonata with 108K miles. The car started missing and the engine light came on. The car missing and has no power,
I borrowed a code tester and found four codes. P0300, P0302, P0303, and P0350. I tested and found that the coil for cyls 2 and 3 did not have the required 20K resistance between the two outputs. I replaced the coil and during the test drive all seemed well for about ten miles when the missing and loss of power returned.
The engine light came back on only showing code P0350.
I check both connectors for the coils, and found proper voltage and ground. I also replaced the spark plugs and visually inspected all wires and connections in the engine compartment.
Any ideas as to what to look for now?
Thanks in advance,
I had a very similar problem. Assuming you have the 4 cylinder engine, the long wire to #1 spark plug invariably rests against the mounting bolt for the #2 & #3 cylinder ignition coil. If the wire is resting against the bolt it is intermittently (at best) arcing. I put a short section of corrugated wiring jacket around the spark plug at that point to hold it off the bolt. Fixed the problem.
Posted on Feb 18, 2009
P0350 Ignition Coil Primary/Sensor Circuit If there is no voltage at either of 2 ignition coil group during 32 ignitions, the PCM determines that a fault exists and a DTC is stored.. http://hmaservice.com/viewer/dispimg.asp?path=/data/Passenger/HY/HMA/ENG/DTC-images/HY-EF13-IMAGES-ENG/ef24035011.jpg
Posted on May 22, 2008
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Posted on Jan 02, 2017
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Please see my tip at http://www.fixya.com/cars/r5932051-check_engine_light_check. These are generic instructions. If you get stuck or need specific instructions for your car, please get back to me with model, year and engine info.
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