Question about 1989 Ford Thunderbird

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89 thunder bird. Not charging

Got an 89 thunderbird, New alternator, Battery.. and for giggles a new solenoid(starter relay) Replaced fusable links, checked continuity between all circuits going to and from the alternator to battery. Checked the grounds, everything checks out ok. Crank the car... no charge coming from the alternator to the batt. so.. I had the alternator and battery bench tested and both come out perfectly fine.... I'm at a complete loss here. help?

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  • PhilTheMech May 11, 2010

    battery cables are correct... I'm thinkin that its not getting a remote signal from the pcm

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Check the ignition switch that is a common problem. I just bought A 89 T-bird and the old owners had the same problem. they changed changed the battery and alternater.. and still had problemsI got the car changed the key switch

Posted on Jan 08, 2009

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Did you hook up the wires from the correctly? Some batteries have the pos and neg reversed on the mounting posts. You may need to double check battery cables and alternator cables are charging. If you have a volt meter, you can perform more diagnostic tests on your own. Like testing output of alternator to ensure you are putting out the correct polarity.

Posted on Nov 21, 2008

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When the alternator went out, it may have also smoked your fusible link that the output wire is on. There are 2 or 3 fusible links on the starter relay on the passenger side fender. This is where they catch battery power from the positive cable there, or in the case of the alternator fusible link, this is where the output wire connects to battery for recharging it. The gray colored link I believe is the one on the output wire from the alternator. When a fuse link blows, the insulation on the wire may bubble or get rough spots. You cut the old one out and splice in a new fuse link. Make a soldered joint for best practice. Or just replace the whole wire and fuse link, from alternator to starter relay, from a donor car, a salvage hunt.

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fuseable links are located a few inches away for each componet
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You may have gotten the +pos and -neg cables crossed, causing the fusable link wire to burn out.
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