Question about 2003 Ford Focus
First thing to do is replace the spark plugs and spark plug wires. Next change the fuel filter and air filter. Make sure both battery cables are tight. If it is still acting up after you change these things then you will need to replace the oxygen sensor. Drive the car to your local auto parts store and borrow (for free) there OBD II scan tool. This tool hooks up underneath the drivers side steering wheel and it will obtain the trouble codes stored inside your vehicles computer. Open up a Haynes repair manual and look in the back of it where it shows what each trouble code is and match the code number you obtained from the scan tool to the number in the repair book. This will pinpoint the exact problem and save you time and money because you will be replacing ONLY the failed componant
Posted on Aug 12, 2010
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Posted on Jan 02, 2017
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