Larry Fisher Posted October 14, 2021 Report Share Posted October 14, 2021 My girlfriends Ford edge limited edition front wheel drive V6 Wont start. Have replaced spark plugs, ignition coils, fuel pump assembly. Purchesd a OBD 2 Code reader which said Fault 1633 Ford says its the " Keep Alive circuit " says insufficient voltage " makes no sense checked Many fuses still vehicle cranks but Won't start Any help would be Very Much appreciated Thanks Larry F Quote Link to comment Share on other sites More sharing options...
1004ron Posted October 14, 2021 Report Share Posted October 14, 2021 (edited) Forum Help & Site Suggestions - Ford Edge Forum Forum Help & Site Suggestions STOP - This section is reserved for topics on how to use this site. DO NOT use this forum for Ford Edge discussion. Edited October 14, 2021 by 1004ron Quote Link to comment Share on other sites More sharing options...
1004ron Posted October 14, 2021 Report Share Posted October 14, 2021 You posted in the wrong section and don't say what V6 model and year. Please add your location and Model/Year to your signature - Settings - Ford Edge Forum Quote Link to comment Share on other sites More sharing options...
Larry Fisher Posted October 21, 2021 Author Report Share Posted October 21, 2021 Well I am new n lost here but still have same issue with my girlfriends ( 2010 FORD EDGE LIMITED EDITION 3.5 , V6 ) as it STILL Won't Start I purchased a small code reader for her EDGE and the code it showed was ( 1633 ) where Ford dealer service says is Insufficient voltage for the Keep Alive circuit Ford associate said possible voltage regulator ( ? ) Tried to get the alternator out through passenger side wheel well but could Not manage So I will have to try top side removal however the AC line's look to be an issue ... ???? Could Anyone comment L.F. Quote Link to comment Share on other sites More sharing options...
WWWPerfA_ZN0W Posted October 23, 2021 Report Share Posted October 23, 2021 @Larry Fisher here are a few videos that can help you replace the alternator https://www.youtube.com/c/MACTFordEdge/search?query=alternator diagnostic for the DTC attached 2007-2010 Ford Edge Lincoln MKX P1633 Troubleshooting.pdf Quote Link to comment Share on other sites More sharing options...
1004ron Posted October 23, 2021 Report Share Posted October 23, 2021 A bad alternator will not prevent a START as long as the battery has sufficient charge. Quote Link to comment Share on other sites More sharing options...
Booger_2021_03_03 Posted November 10, 2021 Report Share Posted November 10, 2021 https://www.engine-codes.com/p1633_ford.html I am also curious as to if this has been sitting a while or you forgot to plug something back in... Quote Link to comment Share on other sites More sharing options...
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