Question about 2001 Hyundai Santa Fe

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Hyundai 2.7 P303, P306 at the same time

107,000 Miles. plugs and plug wires about 10,000 miles on new ones. Coil pack fires Cyl 3 and six together. No problem with cyl 1 and 4 or 2 and 5 at this time. Could crank sensor have a problem if cyl 3 & 6 misfire but other cyls fire ok. Or is one section of coil pack bad and other two sections ok? other problem areas?

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  • Hyundai Master
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I would say its the coil. A crank or cam sensor could cause one cylinder to miss, or go completely dead, but I doubt it would affect two cylinders. And you would get a code for either sensor.

Posted on May 01, 2013

Testimonial: "Thanks. I appreciate the feedback. I did double check the Cyl 3 & 6 output by using other plug wires & plugs to see if any plug fire was able to be observed. No spark was showing up on the alternative wires and plugs in the Cyl 3 & 6 locations of the coil pack. I will try to check if all three coil segments are being pulsed by the ECM at the coil connector or not before I replace the coil as the problem."

  • Jim McCollum May 01, 2013

    The factor that I do not have a cam position sensor or Crank position sensor code is a good indication the sensors are not a part of the cyl 3 & 6 misfire.

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SOURCE: new head plugs and wires coil packs missing on #1

hi from uk i assume you have done all the above work correctly? and the leads from coils are correct firing order 1 3 4 2 ? CAMBELTtiming set correctly etc as you say this has happened since cyl head renewed and miss fire is on Nos 1+2 cyl's this normally suggest now after all work u have done and assume compressions are ok ? i had such a fault on a customers mini some years ago who had done exact type of job as you described this fault turned out to be the inlet manifold gasket had split between cyls inlet ports and resulted in missfire on 2 cyls adjoining on removal of manifold the gasket had been damaged whilst reassembling new gasket cured missfire which had caused weak mixtur on both cyls ie on induction more air being drawn via cracked gasket on each cyl and as your engine if injection same problem?? might be worth checking?? hope this throws some light on the problem?

Posted on Dec 02, 2009

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older post.
how many miles, how many miles for the last tuneup.????

The PCM CREATES spark. on all cars since about 1991.
the only changes are where they hid the IGNITOR.
or how may spark coils you have.
my guess, is your enigne is 3.8L just like my 08
where is the coil pack, well see those spark plug wires.
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the PCM monitors the rail coil , the 3.8 has a 3 COIL pack.
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HV= high voltage wire sets.

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