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Ford Mustang Electrical Problems

119 messages,  Last post on Jun 30, 2009 at 10:18 AM

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What is this discussion about? Ford Mustang, Ford Mustang SVT Cobra, Coupe, Convertible

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#110 of 119 Re: Battery and windows [redstang05] by pony_pirate Apr 26, 2009 (6:05 pm)
Replying to: redstang05 (Jan 07, 2009 9:56 am) window auto up needs to be reset after power failure. consult manual.
#111 of 119 dead electrical system @ start up by pony_pirate Apr 26, 2009 (6:19 pm)
Have read above posts. Have had the same problem w/ '05 GT off and on: Get in, engine turns over very slowly. Get "low battery" readout on the radio and my radar detector. Time on radio needs to be reset. CD changer clicks thru all CD's.   Problem is NOT battery. When battery tender is hooked up, green light indicates battery fully charged. Thus there can't be a drain on battery or alternator problem.   I always leave radio turned off.   Once during routine service at dealer, was told battery not charging properly. After 35 min's, manager came back and said it was OK. He probably couldn't figure it out.   Empty the CD changer? Leave it in the garage without turning on antitheft? Why not. I'll try anything. Replies to this message: Mr_Shiftright (Apr 27, 2009 7:15 am) pony_pirate (Apr 28, 2009 4:46 pm) Mr_Shiftright (Apr 28, 2009 5:47 pm)
#112 of 119 dead electrical system @ start up by pony_pirate Apr 26, 2009 (6:33 pm)
Btw, how do you lock car without turning on antitheft? Lock it with key?
#113 of 119 Re: dead electrical system @ start up [pony_pirate] by Mr_Shiftright HOST Apr 27, 2009 (7:15 am)
Replying to: pony_pirate (Apr 26, 2009 6:19 pm) don't go by the battery tender's assessment. Unless you load test a battery, you really can't tell its condition. When the tender flashes the OK, all it means is that the battery won't take any more charge---that could mean it's full, or it could mean it's faulty.   You are probably right, but the one thing that always trip people up and makes them crazy when working on a problem, is making assumptions that something is okay without really verifying it. It's time-consuming to be thorough but it pays off. Replies to this message: pony_pirate (Apr 28, 2009 4:46 pm) Mr_Shiftright (Apr 28, 2009 5:47 pm)
#114 of 119 Re: dead electrical system @ start up [Mr_Shiftright] by pony_pirate Apr 28, 2009 (4:46 pm)
Replying to: Mr_Shiftright (Apr 27, 2009 7:15 am) Right you are, Host. Battery was dead as a door nail the next morning. Who has patience (or time) for this kind of mechanical failure? Following day got replacement battery, 40R Sears Die Hard Gold -- don't you love that allusion to corporate overcoming of death? Replies to this message: Mr_Shiftright (Apr 28, 2009 5:47 pm)
#115 of 119 Re: dead electrical system @ start up [pony_pirate] by Mr_Shiftright HOST Apr 28, 2009 (5:47 pm)
Replying to: pony_pirate (Apr 28, 2009 4:46 pm) If your battery hadn't died so hard, you'd have found the problem earlier! Lay down already!
#116 of 119 Re: 96 mustang gt v8 5 speed [dieseltech] by ricker113 May 21, 2009 (11:52 pm)
Replying to: dieseltech (Feb 18, 2009 10:29 am) Hey Dieseltech, I had a very similar problem happen to me today. Started with a bad battery. Changed that. Checked the altenator. That was ok. Then driving around my stereo stopped working.It turned back on, then my dash warning lights started blinking. Exterior car lights went off. Door locks and windows stopped working. Car engine died. All happened in about 10 minutes. Now even with the car off and no key in the ignition the dash and interior lights are blinking/flashing totally randomly. This has all happened in one day.   Did you ever get your issue resolved?   Thanks! Replies to this message: ricker113 (Jun 30, 2009 10:18 am)
#117 of 119 2000 Mustang battery light by nativesaulk Jun 29, 2009 (2:32 pm)
Hey all:   Mustang has a battery light that is on until you rev to 2500 rpm's. Took to have battery checked, good but low, charged it and still problem exist. At the same time, had the alternator checked - it is perfect. I am assuming since belts are good, is it cable short or something much easier?? Replies to this message: akirby (Jun 29, 2009 6:01 pm)
#118 of 119 Re: 2000 Mustang battery light [nativesaulk] by akirby Jun 29, 2009 (6:01 pm)
Replying to: nativesaulk (Jun 29, 2009 2:32 pm) How do you know the belts are good? The fact that it varies with RPM indicates either a belt that's slipping at lower RPM or the alternator is bad. The belt is cheaper - replace it and see what happens.
#119 of 119 Re: 96 mustang gt v8 5 speed [ricker113] by ricker113 Jun 30, 2009 (10:18 am)
Replying to: ricker113 (May 21, 2009 11:52 pm) I did get the issue resolved.It was a combo of a bad battery and bad alternator. I replaced both and everything has been working perfect since.   Thanks! -Rick

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