Question about 1999 Ford F150 Regular Cab

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I have a1999 ford f150 the code reads misfire on cyiander 5 what does that mean

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  • Master
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It means that cylinder #5 isn't firing some or all the time. The most common cause for that on the motors is faulty a igntion coil. Some of them are hard to access. You are lucky as #5 cylinder is the front one on the driver's side of the motor. Replacement coils are available at autoparts stores, price dosen't matter on these, buy the least expensive.

Posted on Mar 16, 2011

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  • Ford Master
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A P0305 code means that the the car's computer has detected that one of the engine's cylinders is not firing properly. In this case it's cylinder #5.

Symptoms may include:
* the engine may be harder to start
* the engine may stumble / stumble, and/or hesitate
* other symptoms may also be present

Causes: A code P0305 may mean that one or more of the following has happened:
* Faulty spark plug or wire
* Faulty coil (pack)
* Faulty oxygen sensor(s)
* Faulty fuel injector
* Burned exhaust valve
* Faulty catalytic converter(s)
* Running out of fuel
* Poor compression
* Defective computer

About the possible solutions:
* If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.
* If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.

Hope this helps (remember to rate this answer).

Posted on Mar 16, 2011

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This will help.

Thanks.

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My 2002 f150 is hesitating acutting out and idelling rough .my code reader says the engine is misfireing on cylinders 3 and 5. what could be the cause?


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check plug to #5 injector or bad injegtor

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