Question about 1989 Ford Crown Victoria

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Electrial short or drain?

When i go to start the car the battery is dead . bought a new on thinking this would fix the problem and didn't. think there may be an electical draw or short but can't find anything , checked fused and all other logical areas. any ideas?

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Remove glove box and trunk bulb.Alternators can also drain battery if diodes have failed,They still work correctly but drain when engine shut down

Posted on Oct 11, 2008

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I bought a new battery and it went dead. I pulled up a trouble code that reads B1235 right rear speed sensor circuit open/shorted history current is this the reason for the battery drainage so fast?


no never ,,,think you have a faulty alternator diode ,causing the battery to drain ,,,best advice ? call a local mechanic and get them to check it out for you

Dec 03, 2015 | Cars & Trucks

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New battery worked for a few days now the car wont start the battery maybe dead but i think its something else the car wont start. could it be a fuse or another electrical componet ie voltage regulator?


The Batt has a drain on it , a known issue is the rear deforgger has a short it can be disconnected under the hood on pass side @ starter cylanoid not shurwhich wire i do know it has a fuesable link in it. good lock

Oct 18, 2011 | 1987 Ford Crown Victoria

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Hello, I have a 1986 Jeep Comanche, 4 cylinder 4x4 5 speed that i just bought used. The battery is brand new, same with cap rotor wires and the alternator i just bought. the jeep kept draining the battery...


If you mean it is going dead while sitting you might have a short or another issue drawing power from the battery. take your truck to your local battery warehouse/store the should have a meter thet will tell you if something is drawing on your system. It could be something simple, like maybe the mercury switch on your under hood light is bad and the light is not turning off thus running your battery dead over night.

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I have a 1991 chevy astro van when my van sits without starting up more than 12 hours the battery is dead. I bought a new battery and the same problem remains. I took the van to a repair shop and they...


The way to find the short is as follows. Using a 12 volt test light start with the hot wire(s) going to where you think the problem is located.( like the windows or door locks as you stated) Continue this process with all of the circuits until the bulb in the test light "lights up" when you insert the probe into the circuit wire. Bear in mind this type of problem can be very time consuming which is why vehicle electrical repair shops charge so much.

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2001 Taurus battery drain, 1 cigar lighter doesn't work


You more than likley have a dead short from a wire
grounding out.You can test it with any plug in
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I have a 94 Buick Regal Custom with a 3.8 V6 engine I just got a new battery two days ago and yesterday I was driving to work and my car started to overheat when I pulled into work and looked under the...


It may be that the coolant spraying from the open radiator shorted out the electric cooling fan. This would cause overheating even after refilling the antifreeze, and if the short is severe enough, could also drain the battery. Try charging the battery with a plug-in charger overnight, and remove the fuse for the radiator/cooling fan. If it starts up and runs as normal until it begins to heat up, this is probably the case. It would be a good idea to clean the whole engine with degreaser, being careful not to get it in the alternator, and to clean all electrical components with QD contact or electrical cleaner. It could also be a short in the heater fan circuit, but this is less likely. It is more likely that the draw from the heater fan took too much power away from the radiator fan, especially if the battery was marginal due to excess heat or shorting from having gotten very wet. Also, check that the polarity on the battery is correct, just for good measure.

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2003 Toyota Tundra goes dead


Have Battery tested for a bad cell

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You will need tools (a good multimeter) to figure it out if no apparent reason can be found. We call this a parasitic drain. Could be a relay stuck on to anything, even a bad computer.

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Security system-passlock


I hav a 1995 88 w/ same problem. Key was worn out, Had Security system disabled.by installing a resistor to by pass Sec. System.Had it done for $35.00 Check locally for a starter/alternator shop in your area.

Jan 05, 2009 | 1998 Oldsmobile Intrigue

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