Question about 2004 Ford Escape

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Dear Sirs, I'm now living in VietNam, my friend is living in US. He already sent to me the Motorcraft GL979 alternator 2 weeks ago(The part number: 8L8T-10300-AA), but my car is 2004 Ford Escape 3.0V6, I know the Motorcraft GL979 is applied for 2007-2008 Ford Escape. I must to adjust the 2004 Ford Escape bracket and when I start the engine on, I got the big problem: 1) There are no electric current from the alternator to the battery, I checked it only 12V. 2) The Engine is OFF. Then I turn the key from ACC position to ON position that the "battery symbol" on the dashboard did not light, and I start the Engine that the "battery symbol" also did not light. The DC output to the battery is only 12V. 3) I thought may be the electrical system (ECU or GEM) between the 2007-2008 Ford Escape and the my 2004 Ford Escape are difference??? So that the ECU did not understand the GL979 alternator. I don't understand what happen is? Please help me to solve this problem. I can not to give back this alternator to US. I want to keep the GL979 alternator. What anything I need to buy more? Please help me as soon as possible. Thank you very much. Best regards, Quang

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Hi, Quang : Refer to your point 3) , the ECU or ECM for 2008 and 2004 Escape are different. My suggestion is to buy one correct regulator with WAI number F603. ( http://search.waiglobal.com/bomsearch/bomsearch.aspx?search=bom&part=8259N ), and exchange it with the regulator on Motorcraft GL979 . F603 is a regulator mounted on WAI alternator number 8259N ( http://search.waiglobal.com/vehiclelookup/partnum.aspx?part=8259N) . The alternator 8259N is applied for your car.

Posted on Feb 20, 2011

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My guess is that you have no voltage from the alternator to the battery, what does the voltage read on the alternator when running? the ecm or ecu or whatever has no control over this, check the circuit from alt to batt and check ground also, either one will give you a headache

Posted on Aug 25, 2010

  • lyanhquang Aug 25, 2010

    I checked all the connection wires already but I didn't know why? I thought must adjust the wire in-side the alternator. I can to start the Engine but the battery warning light on the daskboard didn't light and no Voltage output from the alternator.

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