Question about 1998 Ford Expedition
1998 expedition drove vehicle 4 miles to work headlights on ran fine stopped at stop sign vehicle died assumed bad gas cause i just topped off .let vehicle set 3 hrs fired right up however brake light and abs light in dash flash .abs brake light go out when pressure is applied to brake pedal but return as brake pedal is released. in addition while ignition key is on headlamps off they illuminate but dim.if ignition key off headlights off headlights dont light .also when key is on or off when headlamps are turned on passanger headlight is way brighter than driver side.the worst part driving this vehicle headlamps off runs fine switch parking lamps on runs fine turn headlights on vehicle will die as if your shutting they key off switch headlamps back to parking lamp setting or off position vehicle will regain power and run stong . what is causing this electrical problem?
Ok.........sounds like alternator getting ready to die altogether. go to autozone and have them check for free. your alternator is carrying such a heavy load that it cant keep up with all the electrical components. thus most of the time your truck electrical system is being run directly through your battery. pretty soon you wont be able to start truck at all because your battery depends on the alternator to charge it.
Posted on Apr 03, 2015
Car electronics systems are opposite to normal electronics.
Bad ground connections, blown fuses and even burned out bulbs, can cause some very strange looking problems that don't apply to normal electronics troubleshooters.
Cars put plus voltage to all devices, then look for a ground to complete the circuit. This causes strange events to happen. Things that even the manufacturers haven't seen yet.
Electronics systems all have a stable ground system and then applies Plus voltage to activate the circuits. There are no strange things happening here.
So look for bad grounds, blown fuses and burned out bulbs and all should be ok.
Just a thought.
Posted on Apr 02, 2015
Well that kind of sounds like a bad connection, but it was difficult understanding with no good punctuation... Have you checked the battery terminals? If not, do so, and have your alternator checked too. I've seen some really goofy stuff happen when some vehicles don't get enough power.
Posted on Nov 23, 2014
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Posted on Jan 02, 2017
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