Engine misfiring?

Tiny
CARADIODOC
  • MECHANIC
  • 33,916 POSTS
The most common suspect is a simple engine misfire due to worn spark plugs and wires. Ford has also had more than their share of failing ignition coils.

The place to start is by having the diagnostic fault codes read and recorded. The people at many auto parts stores will do that for you for free. If the code relates to a misfire, the code number will indicate which cylinder is responsible, but it will not say why. Be aware that fault codes only indicate the circuit or system that needs further diagnosis, or the unacceptable operating condition. They never say to replace parts or that one is bad. They may try to sell you parts at the part store, but they will only be right about half of the time. First your mechanic will rule out wiring, connector terminal, and other problems before suspecting a part that might be referenced in a fault code.
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Saturday, January 16th, 2021 AT 9:23 AM (Merged)
Tiny
ELIZABETH HUSMAN
  • MEMBER
  • 2 POSTS
Thank you I will do that and see what happens. It is now like the engine is jumping when going up an incline.
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Saturday, January 16th, 2021 AT 9:23 AM (Merged)
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Please let us know what happens so it will help others

Best, Ken
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Saturday, January 16th, 2021 AT 9:23 AM (Merged)
Tiny
ADAM MORRIS
  • MEMBER
  • 2 POSTS
  • 2002 FORD TAURUS
  • 250,000 MILES
The codes say lack of ho25 single low input second one is missing first cylinder third one is mis firing the first 1000 resolutions. Can't figure out what they mean is it timing or spark plugs
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Saturday, January 16th, 2021 AT 9:24 AM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Code numbers never identify bad parts just failed systems.

The coil is the most common failure for the first 1000 code. Plugs and wires would be a good start.

Roy
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Saturday, January 16th, 2021 AT 9:24 AM (Merged)
Tiny
ADAM MORRIS
  • MEMBER
  • 2 POSTS
Thank you will try that do you know how many coils are in the 2002 ford taurus se 3.0 v6?
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Saturday, January 16th, 2021 AT 9:24 AM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
One coil in the back if it is a dohc. If it is not the dohc, it is on the front valve cover

Roy
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Saturday, January 16th, 2021 AT 9:24 AM (Merged)

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