Question about 2004 Ford Focus

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2004 ford focus not charging new alternator and new battery

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Defective alternator. on a ford you may kill new the alt. if the battery is not charged full at time of installation.

Posted on Oct 24, 2010

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Posted on Jan 02, 2017

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SOURCE: Changed a bad alternator, new

check your battery make sure it is able to take a charge. ,if the amps are good check your connection, from altenantor to battery. check voltage drops, battery drains. Your problem most likley seems to be
your battery. Your starter might also be draining your battery. You ll find the problem keep looking.

Posted on Apr 25, 2010

  • 40 Answers

SOURCE: i got 04 ford focus good battery alternator but no

1) check 10A fuse in the batt. juction box (eng. comp.) hot at all times.
2) check the large red battery wire to the alt. for good conn.
3) make sure the alt. is grounded properly
4) gray wire sent from the alt. to the PCM
5) blue wire sent from the PCM to the regulator (alt.)
6) small red wire power frorm the 10A fuse
if all checks out and still not charge replace the alt.

Posted on Sep 12, 2010

paulrelliott
  • 69 Answers

SOURCE: zx5 2004 ford focus alternator broken

disconnect the battery & make sur you have your radio code, then remove the belt.
it's pretty simple there's a nut in the middle of the tensioner wheel, get the right size socket & using a ratchet, move the tensioner by locking the rathet & do or undo the nut, as it's a fixed nut used to swivel the tensioner.
Then undo the wiring on the back of the alternator, usually a click in multiplug and a + power cable boted on with a 10mm nut.
then remove anything in the way of the alternator securing bolts, & remove the bolt's, alternator should be free !
But I don't suggest you do it yourself unless you have a reasonable grasp of mechanics, as I have had to do this job properly after some people have tried themselves & they've made it worse, plus once the belt's off you have no power sterring so you can't drive it to the garage if you can't get the belt back on !

Posted on Sep 19, 2009

  • 26 Answers

SOURCE: 2004 ford focus se replaced alternator

Sounds to me that your battery has shorted out and will not take a charge.Disconnect the battery and try to charge it, then check to see if it has taken power with a volt meter. A shorted battery will take all the power from the alternator and run it to ground leaving no power to run the car. Also check the alternator output with a volt meter after you have checked the battery as a shorted battery can burn out the alternator.

Posted on Oct 08, 2010

  • 2 Answers

SOURCE: I have a 2004 Ford Focus Z-Tec engine. I just

I have similar problem, I repaired the alternator using a voltage regulator and brushholder (new) taken from a new alternator for a Ford Fiesta (I think) when I refitted it the charging light still stayed on. I cleaned the multiplug where it goes through the bulkhead to the PCU and the charge light now goes out but the headlights now flicker and it seems that the voltage is varying or 'pulsing'. I do not know where the fault is now and am looking at an expensive visit to a Main Dealer.Any suggestions or help appreciated

Posted on Jan 13, 2011

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1 Answer

2004 ford focus not charging


Dying battery on one that needs attention
Loose or missing belt
Most likely a faulty alternator.

If you are in London try SAHIBwho are not far from Hangar Lane . Any good auto factor can get you an alternator, car breakers should have them cheap but this is a false economy, should only be about £100

Jun 15, 2015 | 2004 Ford Focus

1 Answer

Battery light on, got new alt., starter tries to engage, but doesnt


Did you have the charging system diagnosed or did you just guess at it being the alternator . The charging system is computer controlled . The starter isn't working because low power , battery dead . Is there B+ voltage at the wire on the back of the alternator .B+ voltage at pin 3 at the connector pluged into the alternator .
Charge the battery use a volt meter an test for B+ voltage at the places i mention . No check engine light ? DTC'S - diagnostic trouble codes stored .
Ford Smart Charge System Alternator Not Charging
Ford PCM controlled alternator testing

Aug 26, 2017 | 2004 Ford Focus

1 Answer

03 ford focus replaced alternator checked charging system still not charging have power to alternator from battery light comes on after 10 seconds while running new battery, it only shows battery voltage...


Im no expert but my kids older car had several alternators replaced. 2nd one was bad.. We got one new and one rebuilt. I think the rebuilt worked a week and car died again.

Sep 07, 2013 | 2003 Ford Focus

1 Answer

2004 ford focus not charging battery... new alternator and battery


check whether is there any charging relay in the fuse box.

Aug 19, 2012 | 2004 Ford Focus

1 Answer

Ford Focus Stop, Not the battery or alternator


diode in alternator is shot. test w a voc.volt o meter. should have at least high 13s tomid 14 volts to keep car charging

Jun 04, 2012 | Ford Cars & Trucks

2 Answers

I have a 2004 Ford Focus Z-Tec engine. I just replaced the alternator twice in one week, had Ford updates, and a new the battery. It will not hold a charge. I am told now it might be a wiring problem. It...


I have similar problem, I repaired the alternator using a voltage regulator and brushholder (new) taken from a new alternator for a Ford Fiesta (I think) when I refitted it the charging light still stayed on. I cleaned the multiplug where it goes through the bulkhead to the PCU and the charge light now goes out but the headlights now flicker and it seems that the voltage is varying or 'pulsing'. I do not know where the fault is now and am looking at an expensive visit to a Main Dealer.Any suggestions or help appreciated

Dec 06, 2010 | 2004 Ford Focus

1 Answer

2004 ford focus se replaced alternator couple of mnths ago went to start this morn battery dead charged battery still no start. jumped of another battery started but when removed jumper cables car died


Sounds to me that your battery has shorted out and will not take a charge.Disconnect the battery and try to charge it, then check to see if it has taken power with a volt meter. A shorted battery will take all the power from the alternator and run it to ground leaving no power to run the car. Also check the alternator output with a volt meter after you have checked the battery as a shorted battery can burn out the alternator.

Oct 08, 2010 | 2004 Ford Focus

1 Answer

I got 04 ford focus good battery alternator but no charge also i check fuse box next t the battery and the other inside the car everything is good but my alternator still dont charge


1) check 10A fuse in the batt. juction box (eng. comp.) hot at all times.
2) check the large red battery wire to the alt. for good conn.
3) make sure the alt. is grounded properly
4) gray wire sent from the alt. to the PCM
5) blue wire sent from the PCM to the regulator (alt.)
6) small red wire power frorm the 10A fuse
if all checks out and still not charge replace the alt.

Sep 12, 2010 | 2004 Ford Focus

1 Answer

I have a 2004 ford focus. Can you tell me what cause the battery light to stay on


good day, you may need to have your alternators checked because its a common problem when the battery light is up. it may not be charging or not about to charge. hope this helps, have a nice day

Feb 08, 2010 | 2004 Ford Focus

1 Answer

New alternator / Car won't start


need to find out if your battery is charged charge your battery and try again

Jan 18, 2010 | 2003 Ford Focus

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