Question about Ford Aerostar
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Posted on Jan 02, 2017
Sounds like you have a universal failure of your instrument panel circuits. The Speedo and odometers run off a cable that goes down into your tranny, not electrical.
Pull each fuse out one at a time, test each for continuity, clean the blades with an eraser and reseat, then go to the next one. Tighten all the ground cables you can find, starting from inside, then the firewall, engine block, battery, etc. This should fix it unless you have an open in the instrument circuit. A short will blow the fuse involved so that will be obvious. Just replace the blown fuse with the SAME VALUE- DO NOT USE A HIGHER AMP FUSE! If you have a blown fuse, hopefully you'll be lucky and it won't blow again.
I say check each fuse because sometimes instrument circuits are shared with others and not obvious which fuse is the one. And if one fuse is not making good contact, then others are likely to be on their way. If it is a short it will work momentarily until the fuse blows- thats why they're in there- to protect the circuit.
If you have a short you will have to track it. Take the blown fuse out and run your tests on your wires- most. Sometimes those little instrument lights get a bad connection- glazed contacts & sometimes they act as sub-fuses as well, so it can get complicated. This is my generic solution for most vehicles.
Good luck hope this helps.
Posted on Apr 29, 2009
you should have your vehicle scanned with OBDII.(on board diagnostics) . take it to a shop and tell them your engine light is on and they'll hook a computer to it and find out why
Posted on Feb 17, 2009
My nephew has a 96 taurus also when his radio went out he noticed that his speedometer was not working as well so we check the fuses under the dashboard and found that a fuse from the radio memory was blown . We replaced it and the radio and speedometer and the odometer worked fine
Posted on Apr 17, 2009
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