ftomas Posted January 24, 2009 Share Posted January 24, 2009 Hi I have a ford focus c-max 1.6 TDCI 109hp (diesel) with AC a day ago my battery light come to life when driving I have checked the battery voltage with engine running and gave me 12v (12v to with engine stopped) , i think if alternator was good it would be +/- 14v with engine running. So today i went to take out the alternator.... but no way Does anybody known how to take that thing out? (i have AC)??? The AC compressor is at bottom and the alternator is on top... its necessary to take out the AC compressor? and can i disconnect the AC pipes to compressor? Any help is welcome Quote Link to comment Share on other sites More sharing options...
mintalkin Posted January 24, 2009 Share Posted January 24, 2009 . Quote Link to comment Share on other sites More sharing options...
ftomas Posted January 25, 2009 Author Share Posted January 25, 2009 there is a common flaw with some the Ford alternators - it is not the alternator itself, rather the slipper pulley. This is designed to slip under sudden increases in load/demand to lengthen the belt life, unfortunately these fail on a regular basis resulting in a freely spinning pulley i.e. not turning the alternator so before changing the alternator get this checked. Ok.... so.. how i can i check this? I had remove the belt... and when i turn the pulley by hand the alternator moves... I also disconnect the positive cable from alternator, then turn engine on and measure voltage at the alternator... and gave me 0,49 V Quote Link to comment Share on other sites More sharing options...
mintalkin Posted January 25, 2009 Share Posted January 25, 2009 . Quote Link to comment Share on other sites More sharing options...
ftomas Posted January 25, 2009 Author Share Posted January 25, 2009 to check the slipper pully the alternator needs to be spun by the shaft(usually with a drill) and voltage checked Can this be done with alternator in his place? Quote Link to comment Share on other sites More sharing options...
mintalkin Posted January 26, 2009 Share Posted January 26, 2009 . Quote Link to comment Share on other sites More sharing options...
ftomas Posted January 26, 2009 Author Share Posted January 26, 2009 Ok, thanks for the reply Cmax went today to garage Do you know if its necessary to clean the ECU erros after new alternator install? They want to... Quote Link to comment Share on other sites More sharing options...
mintalkin Posted January 27, 2009 Share Posted January 27, 2009 . Quote Link to comment Share on other sites More sharing options...
ftomas Posted January 27, 2009 Author Share Posted January 27, 2009 It could be errors... But related to this i dont think so. I saw the dash light, and then stopped after 5 minutes. Then i recharge the battery and drive 30 km to ford dealer and never had an error... only the warning light from battery / alternator. Quote Link to comment Share on other sites More sharing options...
mintalkin Posted January 28, 2009 Share Posted January 28, 2009 . Quote Link to comment Share on other sites More sharing options...
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