Car sputters/loses power or feels like stalling when I'm accelerating - Ford Focus Forum, Ford Focus ST Forum
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Old 04-02-2010, 09:16 PM   #5
Focus Rookie
Join Date: Apr 2010
Fan#: 74117
Location: Woodstock, Canada
What I Drive: 2007 Dark Grey ZX3

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Originally Posted by iroc34 View Post
YUP. Alternator is shot. When the battery gets below about 10 volts the computer on our cars does some really strange things. Dash starts to freak out followed by severe bucking and eventually death LOL. Double check that the pig tail that plugs in to the alt is good (known problem). Get the battery charged up and get to a place that will check the alt...
This sounds exactly like whats going on with my wife's '02 Focus. Tonight it started loosing power when driving 60 mph & felt like its trying to stall. Put in the clutch and the engine stalls. Won't re-start right away..wait a minute, suddently starts no problem. Problem repeated a few times. Same as Leetv stated, no warning lights on the dash. I hooked up a code reader when I got home, no engine faults present. This is the first time this has happened interesting someone mentioned the alternator problem. Her car wouldn't start the other morning - battery was dead. Boosted the car, took it for a drive, ran fine. Checked the voltage when I go back, 12V with engine off, only 12.5V with it running - I'm thinking its the alternator as the voltage should be 13-14V when the engine is running. Took it to Ford they changed the battery, said the alternator was fine. Is it possible to have an intermitent problem with the alternator?
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