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Anonymous Posted on Jun 05, 2012

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

I have 2003 ford focus 2.0 SOHC SPI. I am not getting a service engine light and the car has a bad missfire. It idles really rough and when you put it in gear it pretty much dies every time. I checked to make sure the wires and plugs were in the right firing order and they were so I replaced the plugs, wires and coil and then double checked to make sure I had the right firing order but nothing has changed. What are a few things that could be wrong with it?

  • Anonymous Jun 06, 2012

    The coil mounting bracket is fine and not sure how that affects the missfire.

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JJ McKinney

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  • Posted on Jan 06, 2013
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Have you checked your cam or crank sensors? Could be one of them.

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  • Posted on Jun 05, 2012
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The coil pack mounting bracket corroded

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Made a video on how to change the AC Compressor, Accumulator, Orifice Tube, and Hose Assembly on my 2003 Ford Focus 2.0L SOHC SPI. Symptoms started off as blowing hot air at idle and then it just blew hot air all the time and Firestone told me it had not compression and needed the compressor replaced. I got all my parts at AutoZone for a around $230. Save 20 On Online Ship To Home Orders Of 100 Or More
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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?

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.
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plese rate

what engine?

2.0L SPI w/o a/c
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2.0L SPI w/ a/c
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2.0L ZETEC
790bdbc.gif
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5bed3e0.gif
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To my knowledge, a 2003 Ford Focus 2.0 SPi engine would need 4 quarts of engine oil (roughly 3.78 liters). Incidentally, the Ford/Cosworth Zeta/Zetec engine would be needing 4.25 quarts (~4 liters).

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

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