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1991 vmax has constant electrical power turn switch off still have power only way to turn off power is to disconnect battery.is this a short or is there some switch or relay bad?

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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the terrier
  • 94 Answers

SOURCE: Electrical fault in a '99 2.5 20V V70.

hi volvo
sounds like an poor earthing problem. in dc circuits offs go to ground, try cleaning up all earths and also look for any lives that may be shorting to the body or chassis

Posted on Oct 27, 2008

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countrysi248
  • 443 Answers

SOURCE: Ignition tumbler 1991 ford f 150

sounds like you have shorted out the solonoid .. just a thought it would stay on if shorted inside and leaving power to other things that would normally work when the key is on ...

Posted on Feb 05, 2009

  • 532 Answers

SOURCE: 1997 Chevy S-10 Doors intermittantly lock and unlock uncommanded.

try reprograming the auto locking feature,you will need the owners manual for instructions to do it,you should be able to turn off the auto-locking part of it,like when you put it in gear and the doors automatically lock.

Posted on May 09, 2009

bunnydawg
  • 5158 Answers

SOURCE: Fuel pump constantly runs

sounds like you haven't got the right relay or the replacement has failed. pull one relay at a time and go back to the rear of the vehicle and listen for the pump. make sure the key is on when you do the test.

Posted on Sep 09, 2009

cshubart
  • 146 Answers

SOURCE: need relay location for electric fuel pump on 1991

under the hood or dash

Posted on Sep 26, 2009

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Check instrument cluster resister or regulator could be a shorted bulb too

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1991 ford taurus still overheats after replacing,thremostat,radiator,hoses\r\ni think the fan is not coming on when it should .


If the primary cooling fan is electric, it will be controlled by a primitive thermal switch located in the rear of the bottom radiator tank,
If it has two wires, disconnect them from the switch and, with the ignition on, short the incoming leads briefly together with a paper clip or short piece of copper wire; if the fan kicks off, the fan is OK and the switch is bad.
If only one lead, disconnect it and again with the ignition on, ground it to a clean metal chassis point; this should turn the fan on. If the fan starts, then the switch is bad.

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Interior lights will not go off when locking the car


Seems from just a little research that this is a major problem with several years of jeeps having the same issues. Most responses i seen point to an electrical problem with the PCI Bus.
A quick fix in which I have seen several positive responses, is to disconnect the negative cable from battery and leave disconnected for approx. 10 minutes then reconnect.
Hopefully this will give you at least some short term relief.

Sources: http://forums.cnet.com/7723-7811_102-272172.html http://www.cherokeeforum.com/f2/interior-lights-staying-25200/

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I have a 2004 545i BMW. I have a new battery and don't leave the key in the ignition. What is causing my battery to die.


Most likely a short or the Alternator is not properly charging the battery and electrical system. First check the wires that go to the starter and lead from the battery to the Alternator for any breaks or possible shorts that are allowing the Positive wires to ground. If those are good, disconnect the battery positive wire and connect the jumper cable directly to the positive cable and jump the vehicle. Once it is running disconnect the jumper cable and test the voltage on the positive wire to see what the alternator is sending as a charge to the battery. Anything less than 12 v is an obvious problem and I believe it should charge at 14v but you would have to check the book on that. Your other option would be to remove the alternator and have it tested at one of the Auto parts stores that offer to do that, Auto Zone and Advance Auto come to mind. If there are no shorts and the Alternator is good then that leaves the Alarm system and interior lights as being the problem and you will have to isolate those areas for shorts or constant connections. You may have accidentally set your interior lights to constant on which would bypass the timer system if you have one. Check the dash brightness control knob to make sure it isn't turned all the way to one side or the other. This position typically sets the interior lights to constant on.

Jan 17, 2011 | 2006 BMW 750Li

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Ignition tumbler 1991 ford f 150


sounds like you have shorted out the solonoid .. just a thought it would stay on if shorted inside and leaving power to other things that would normally work when the key is on ...

Feb 05, 2009 | 1991 Ford F150

1 Answer

Sidekick goes dead electrically. Brake light comes on faint


check for any short circuit..it maybe drawing power from somewhere making d vehicle to lose voltage in the battery

Nov 28, 2008 | 1991 Suzuki Sidekick

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Electrical fault in a '99 2.5 20V V70.


hi volvo
sounds like an poor earthing problem. in dc circuits offs go to ground, try cleaning up all earths and also look for any lives that may be shorting to the body or chassis

Oct 27, 2008 | 1998 Volvo V70

2 Answers

My 91 honda accord goes through new batteries like they were a bag of potato chips


Try this. If you have a test light (very inexpensive at auto stores) disconnect the positive battery cable. Then connect the test light in series (pos. end of test light to battery pos. and the alligater clip to the battery cable). Turn off everything possible in your car. If the test light stays illuminated, you have a constant draw. If this is the case, you'll need to track it down.
Here's how: Re-connect the battery and keep everything you can off. Take your test light and connect the clip to a GOOD ground near the fuse box. ( right side under dash) Remove each fuse and test the contacts from the power side. The only one that should light it, is the clock and security system. If any thing else lights the light, there is a short in that system. If this is the case, you'll need to physically follow the circuit to the battery. Disconnect each connection and test the connector on the battery side untill you get to the connection that does not light the test light. The faulty switch or relay or short will be in between those two connection. Replace the component and your done. Have fun. I really enjoy these kinds of challenges.

P.S. I have the service manual for this car on a PDF file. If you need it, contact me and I'll give it to you. (free)

Sep 21, 2008 | 1991 Honda Accord

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