Question about 2003 Ford Focus

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I have a ford focus 2003 model.plugs number 2 and 3 are missfiring.is there posibbility that the Ecu has packed?

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  • Ford Master
  • 4,369 Answers

Check the connection to your coil pack for a corded or broken wire going into the connector. The coil pack is where the plug wires come from. Ford has a pigtail kit to replace it if it is bad. Or the coil pack is bad. Top, driver side of engine.

Only 1 in 10,000 PCMs is defective.

Posted on Nov 20, 2014

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Posted on Jan 02, 2017

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  • 167 Answers

SOURCE: Missfire on number 3 coil on 2001 S type Jaguar 3.0 V6 Sport

Check the igniter module.
I assume you have a ecu code telling you #3 coil is missfiring ?
If so also check the crankshaft angle sensor .
If it is not an error code do a compression test and check the injector.
Hope this helps
Regards
George

Posted on Jul 08, 2009

ZJLimited
  • 17970 Answers

SOURCE: firing order for a 2003 ford focus 2.0l

Check and verefy this firing order...

2003 Ford Focus 2.0 liter DOHC L4 VIN "5" and VIN "3"
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2003 Ford Focus 2.0 liter SOHC L4 VIN "P"
00ac18a.gif


Hope thats help.

Posted on Jan 27, 2010

johnmeanyhan
  • 1 Answer

SOURCE: Missfire

just replaced plugs and COPS on 01 f-150 check engine light went out for a day. now it hesitates to start, has terrible miss at idle but runs fine. the codes say running to lean? btw, during plug replacement i removed an after market ford CNG assembly. did that assembly require different 02 sensors to compensate for the flash point differance between compressd natural gas and good ole gasoline.

Posted on Apr 14, 2012

  • 3 Answers

SOURCE: I have 2003 ford focus 2.0 SOHC SPI with a bad missfire

Have you checked your cam or crank sensors? Could be one of them.

Posted on Jan 06, 2013

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cheers and buena suerte

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it sounds like a problem with the coil pack or plug leads its a very common problem with them . I would suggest you replace both coil pack and plug leads at same time.

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