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New battery but the lights are dim and and the alarm sound is low sometimes after i drive, voltage reading is correct, please help

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Checking the voltage directly off the battery may be fine. heck for a loose ground wire connection causing this problem. Corroded connections also cause this. If you have a set of jumper cables attach one end to the negative terminal on the battery and connect the other end to the frame. Then see if the lights are brighter. If so you have a poor connetion at the ground somewhere

Posted on May 12, 2012

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6 Suggested Answers

6ya6ya

6ya staff

  • 2 Answers

SOURCE:

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Posted on Jan 02, 2017

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lnwolf33

Eric Ehresman

  • 14 Answers

SOURCE: cannot disable anti theft alarm driving neighbours mad

There should be a relay under the hood for the security system, if you can not find it, try jacking the front of the car up, it should have a sensor that tells it that it is being towed and should turn off, unless of course it has a bad wire that is grounding out.

Posted on Jan 28, 2009

RamTek

Ramy de Jesus

  • 377 Answers

SOURCE: while driving the head and dash lights go dim then

Try to check the alternator and also check the fuse and alwas make sure that the battery terminal is fix and it is not loose.

I’m happy to assist further over the phone at https://www.6ya.com/expert/ramy_d9e7ebea3891f482

Posted on Jun 09, 2009

Mustgo

Vincent G

  • 2361 Answers

SOURCE: battery test proper voltage, new alternator test

Battery by itself with no cable attach should read 12.4V for low and 13.6V for fully charged.

With both terminal connected a health charging system should read 13.6 to 13.8V

Amp gauge should read positive when chagring and when discharging it should be on the left (negitive side)

====
Troubleshooting

Key has to be out of the ign.

Charge battery to the max with terminals off the car.

Test voltage and make sure it's between 12.8 to 13.6V

Check the battery CCA and compare it with a battery load tester.
CCA that read 60% below the sticker is a BAD battery.

Cannect the + terminal.

Carefully touch the negitive terminal to the neg. battery post.

Make sure all doors and light are off

You should get a little spark.

A large spare is equal to a large load.

An amp meter will give you a better idea what the drain is.

A short is hard to find and it will take time.

Work on one fuse at a time until you find the load.

Posted on Jul 17, 2009

fixitriteman

Ray Shepherd

  • 431 Answers

SOURCE: When driving my 2002 silverado my lights will dim

Most likely it is the voltage regulator in the alternator . this is common of a alternator be for going bad, some times this is caused from jump starting.rarely it could be a intermittent short. but it would save a lot of time to have the alternator Thrilley tested or even replaced.it really don't mater about the volt out put.if the reg. is failing .hope this helps .if you want any further assistance feel free to ask.we are here to help.

Posted on Apr 06, 2010

355ttrex

Ron

  • 249 Answers

SOURCE: 2006 Chevy Silverado alternator intermittent charging

Perfectly normal.
Starting with the 2005 model year, light duty full size pickups and utilities are equipped with a new Regulated Voltage Control (RVC) system. This system reduces the targeted output of the generator to 12.6-13.1 volts when in "Fuel Economy Mode" to improve fuel economy. The generator may exit "Fuel Economy Mode" if additional voltage is required. This will cause the voltmeter to fluctuate between 12 and 14 volts as opposed to non-regulated systems that usually maintain a more consistent reading of 14 volts. This fluctuation with the RVC system is normal system operation and NO repairs should be attempted.

Posted on Jul 22, 2010

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