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Uniden uh720sx-nb not working after good batteries installed and won't turn on

Posted by Anonymous on

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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  • 116 Answers

SOURCE: 2007 chevy cobalt ls won't

Ignition relay or fuse could be the problem. When you turn the key to start do you hear a fuel pump kicking on and or do you have spark when you hot wire the starter (I know it's hard to check while trying to start it)? You can email me back and I might be able to pinpoint it more.

Posted on Jun 06, 2011

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ginko
  • 19396 Answers

SOURCE: 1994 BMW 740i with 222,000

Hi.

If it does turn over and electrical works, then the problem is unlikely the battery. You can try jump starting. If it cranks when jump-starting it may be a weak battery, starter motor or alternator, but I don't think that this is the problem.

Check if there is spark on all cylinders. Do a code scanning (this car is OBD1, you will need to do the scan at the dealer place or to find a BMW OBD1 tool- Universal OBD2 scanner will not work on a 1994 BMW). If the codes return misfire or mixture related errors check fuel pressure, check sensors and parts that determine the mixture (MAF/MAP, AIT, O2 sensors, IAC and EGR system), check the vacuum system for leaks and check the crank sensor.

Regards.

Ginko

Posted on Aug 08, 2011

SOURCE: My '99 saturn sl won't start. the battery has a charge, and the alternator is good, but it won't turn over.

Hi Vernon, There could be a number of different reasons why your vehicle is failing to start. The battery voltage could be dropping during start and become unable to engage the starter motor to turn the engine. You can check this by trying the key with the head lights switched on. If the lights become very dim, you'll need to check the battery, meaning clean the terminals and then try to start with a jump from another battery. If you achieve start up and it fails again the following morning, you will probably need to replace the battery. There could be a problem with the starter relay or a loose contact for the starter motor, most lik3ely the one connecting to the soliniod. It would be good to know some additional information, such as does a clicking sound come from the starter when engaged? Is there a perceptible drop in voltage output when the starter is engaged? does the enine turn at all? Try what I've suggested and if that does not solve the problem answer the questions and let me know anything else which you may think is relevant. Regards John

Posted on Nov 18, 2011

  • 1608 Answers

SOURCE: 2009 HHR won't start. Battery is good.

Is the security light on or blinking?If not then do you have power to the starter.You can check this with a test light.You should have power when you turn the key to start.The test light should light up.Should be the small wire.I believe it is purple in color.If the security light is on then you will have to get the codes to see what is causing the no start.Hope this helps.Good luck.

Posted on Dec 07, 2011

tayjoejoe
  • 2208 Answers

SOURCE: Car won't start, battery is good, won't even turn over.

These vehicles are prone to failures in the antitheft system. This will actually lock out the starter and/or injectors. Read thru this link, might be your problem.

http://vatspasslockpasskeysecurityhelp.yolasite.com/

Posted on Mar 13, 2012

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1 Answer

My car won't turn on it was working fine last


Just because you charged the battery it doesn't mean it is any good. Modern sealed batteries fail; just as you described, fine one moment and then nothing, they go open internally.

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Try this procedure:
Check the battery like this:
Turn on the headlights, then try to start the car.
If the headlights do not dim or go out, then the battery is likely ok.
Check that the battery cable plus post, goes to the starter, Minus post to a good ground, like the engine.
If wiring is ok, then look at the starter solenoid for a good connection, and proper voltage at the starter.
Problem is most likely the Solenoid's bendix gear or starting relay, Have someone bang on the starter while you try to start the car. This usually works by dislodging the bendix gear..
Hope this helps.

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Ignition relay or fuse could be the problem. When you turn the key to start do you hear a fuel pump kicking on and or do you have spark when you hot wire the starter (I know it's hard to check while trying to start it)? You can email me back and I might be able to pinpoint it more.

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My truck won't start. It won't turn over... only clicking noise.. even with a jump. the headlights work but very dimly.. orange lights next to headlights flash on and off dimly consistently as well...


When a battery is very low, even a jump won't work because the battery takes too much out of the jump. Take the battery out and have it charged up.
If it won't take a charge, get a new one.
But also make sure the battery terminals and cable ends are shiny and greased.

If you really want to be sure, put a voltmeter on it.
A good battery should be 12.5.
When you crank it should go down to about 10.
If it goes below 9, either the battery is too low, or the starter is draining too much.
If it never goes below 11, it is not draining enough, and the solenoid is probably bad.
If when you stop cranking, it comes back up to over 11, then the battery is good, so the starter is probably bad.

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