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Car Forum / Driving, Maintenance, Tuning / Maintenance and Repair / May 2005Electrical system Failure
I am repairing a 1987 Plymouth Gran Fury, and the electrical system seems dead. I know the battery is shot since I tested it with a battery charger. I am using the battery charger both on the 10 amp recharge and the startup settings. I have replaced the distributor cap, the rotor, the 8 spark plugs, the air filter pcv valve and the breather element. The horn, the lights- interior and external, the radio etc do absolutely nothing with the battery charger. The car does not even start to crank. Does anybody have any idea what may be wrong? Does anybody have any suggestions? Thanks > I am repairing a 1987 Plymouth Gran Fury, and the electrical system seems > dead. I know the battery is shot since I tested it with a battery charger. I [quoted text clipped - 5 lines] > what may be wrong? Does anybody have any suggestions? > Thanks The following is fairly generic but this should apply to your car... Look for the pigtail ground wire coming out of the negative battery terminal. It should go to the body of the car. Without that wire your car's complete electrical system may be ungrounded except for the starter / block. Even the starter won't work if the ignition switch circuit is ungrounded. Toyota MDT in MO Also look for the fusible links in the harness for an open circuit. >> I am repairing a 1987 Plymouth Gran Fury, and the electrical system > seems [quoted text clipped - 22 lines] > > Toyota MDT in MO >>>charger. The car does not even start to crank. Does anybody have any >> [quoted text clipped - 12 lines] >> >>Toyota MDT in MO Good things to check, but on a Mopar also be sure to check the fusible link(s) that feed all the electrical systems except the starter. Driver's side firewall and fenderwell area, near the starter relay and the bulkhead connector that brings wires to the interior. Also, get a good battery in it. With a dead battery, any testing is somewhat moot. A battery charger on "boost" is not a substitute for a good battery. That screams no body ground to me. I would run a booster cable from the battery negative to the body and see what happens. Then try to the engine block. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's > I am repairing a 1987 Plymouth Gran Fury, and the electrical system seems > dead. I know the battery is shot since I tested it with a battery charger. I [quoted text clipped - 5 lines] > what may be wrong? Does anybody have any suggestions? > Thanks > I am repairing a 1987 Plymouth Gran Fury, and the electrical system seems > dead. I know the battery is shot since I tested it with a battery charger. I [quoted text clipped - 5 lines] > what may be wrong? Does anybody have any suggestions? > Thanks Are you trying to charge the battery you know is shot? I don't understand the reason for that. If the battery is shot, why not replace the battery? A short in a battery will prevent the charger from applying voltage to the electrical system. If it (the battery) is open, you are risking damage to the entire electrical system, since most chargers, especially the cheap ones, expect to see a given load and will overvoltage if they don't see that load. Most chargers are not regulated (as in voltage regulated power supply). |
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