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2007 MKZ coil pack problem, how common is it?

One was burned, another two showed misfire. Changed plugs and three packs, now shop states that I need pcm. What is fair estimate for replacement of that?

Posted by Anonymous on

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 13 Answers

SOURCE: 1999 Town Car began running very rough - suddenly.

When cleaning your engine, water/degreaser went down the spark plug ports. Try using a air compressor blow gun to remove the moisture from around the spark plugs and boots. The water was causing the engine to misfire on 3 cylinders at first and as the ports started to evaporate the moisture, the less misfiring was occuring. Dry thouroughly and hopefully coils do not have damage to them. Also check to make sure the boot is making good contact with the spark plug.

Posted on Apr 09, 2009

gtaplytmpt
  • 90 Answers

SOURCE: 02 navigator misfire #7 cyl still after i changed plugs and coil

You've tried everything but getting the timing checked out. You've done all the other parts of a tune-up but that.

When you changed the spark plugs did you notice #7 was especially dirty or greasy, this could point to a seal being broken or a piston ring that needs replacing.

Posted on Jul 07, 2009

  • 7353 Answers

SOURCE: miss fire cyc 8 changed plug and coil pack scan

check compression, then fuel injector. or vac leak. what kind of scan tool. very few will give live misfire data. you are sure you replaced number 8, drivers side rear?

Posted on Oct 21, 2009

  • 285 Answers

SOURCE: REPLACED PLUGS AND BAD COIL PACKS ON 1998 LINCOLN

you should either do a compressio test on all of the cylinders or take it and get it scannred for codes to see if the right coils were replaced

Posted on Nov 11, 2010

  • 14036 Answers

SOURCE: my 93 towncar runs rough

YOU HAVE INTAKE MANIFOLD LEAK ALSO COULD HAVE BAD OR STICKING INTAKE VALVES. CODE PO 226 IDM SIGNAL NOT RECEIVED AND CODE PO 542 FUEL PUMP SECONDARY CIRCUIT.

Posted on Mar 12, 2011

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What side is the #2 cylinder on for a 2007 Santa Fe 2.7L V6 the engine light came on it said #2 missfired plug or coil pack?


A 2007 should not need a coil pack. If there is no dead skip while running its probably a stored fault. Do not replace any coils without proving they are bad (expensive). Perform an OBDII scan with a printout and then delete fault history. Check again in a week to see any current faults. Let the scan be your guide to parts replacement . An occasional misfire is common.

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I suspect either your spark plugs are fowling or your coil packs need to be replaced

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Would need my head under the bonnet to find the answer ,from your description it could now be a injector who knows but take the plug out and see if its all wet and black then go from this point as fault could be a coil pack /valves or fuel injector but as you havent stated year then again it could have a coil on each cylinder or a remove coil pack as you stated it has HT leads (wires)

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The trailing spark plugs have no spark


I have only recently fixed this problem on my 2004 RX8. My trailing sparks were not working causing misfire in 2nd cylinder. Common problem is the coil packs. Each plug has a seperate coil pack and unfortunately not cheap.

I changed all four plugs and all four coil packs which cost me around 30 per plug and 80 per coil pack. If you call around you will get these prices, however mazda charge over double so do not go there!

You can get away with only the trailing as a cheaper option but the strain may cause the leading to go aswell!! I only got my rx8 a week ago and already shelled out 800 on it!! Wish i kept my BMW now!

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1 Answer

I have a 2002 TrailBlazer with the straight 6,diognostic check said #3 cylinder was dead or misfiring, also map sensor showed up. #3 cylinder was misfiring, so to test the coil pack I swapped #3 coil pack...


did you replace only one spark plug? that can cause issues because of differences in resistances between cylinders. also, did the map code stay off after replacing
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