Question about 2003 Ford Focus
Have a 2003 ford focus. when the car is idling and i turn on the hazards the car begins to noticeably surge. have changed both alternator and battery in past month
If you have 14 volts or more at the battery at 1000 rpms, the battery & alternator are fine. If you get the same surge when you turn the bower motor on high speed, it is just the normal load on the alternator as it puts out more current. The engine is supposed to compensate by kicking up the idle. It does this through the IAC, idle air control. You may need to clean the IAC passages and the throttle body passages. I also would clean the MAF sensor heated wires with carb cleaner or MAF sensor cleaner. The MAF is in the iar intake hose and has a 2 or 3 wire connector going to it. The heated wires are in the air stream. Then disconnect the battery for 2 hours to clear the "Keep alive memory"
It will relearn after you drive for 10 miles. May run rough for that time.
Posted on May 11, 2010
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Posted on Jan 02, 2017
motor mounts need replacement and sounds like your cars comp. is about to take a hit and go down
the air flow control unit sounds like it also has has a clog in it and needs to be serviced this is a big one when you get to driving at higher speeds the fan turns off and the air outside controls cooling air/fuel mixture rate sometimes too much air intake can make the vehicle act eratic
Posted on May 21, 2008
Check your battery ground connections. Make sure the vehicle chassis (and alternator) is properly grounded.
Check for any loose connections around the main high current 12V supply fuses.
Check the clicking in the steering column is not a loose supply wire arcing.
Posted on Jun 20, 2009
THIS IS A COMMON CODE.. THIS IS A PRESSURE SELENOID LOCATED INSIDE THE TRANSMISSION.... SOMETIMES CALLED A SHIFT SELENOID... THERE IS A FIRST TO SECOND SHIFT SELENOID AND A SECOND TO THIRD AND A THIRD TO OVERDRIVE... THE SHORT CIRCUIT CODE CAN BE TWO THINGS.. FIRST A BAD SPOT IN WIRING HARNESS CAUSING SHORT CONDITION.. DOUBTFULL... OTHER CONDITION IS THE SELENOID ITS SELF COULD BE GOING BAD DRAWING MORE CURRENT THAN NORMAL. THIS WILL REGISTER THIS CODE....YOU HAVE TO REMOVE THE TRANSMISSION PAN TO EXSPOSE THE VALVE BODY.. THERE YOU WILL SEE SEVERAL SHIFT SELENOIDS...WHEN YOU PURCHASE THE REPLACEMENT IT WILL GIVE YOU A GOOD IDEA WHAT TO LOOK FOR....THEY JUST PLUG IN AND 1 OR 2 SCREWS HOLD THEM IN.... LET ME KNOW IF MORE HELP NEEDED
Posted on Sep 01, 2009
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