Question about 1989 GMC Sierra

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Truck takes 30-40 seconds of cranking to start when cold. Battery & alternator have tested good and battery replaced too. Starter was also replaced all no help. Due to required excessive cranking, battery discharges. Runs fine once started.

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  • Clint Bunting May 11, 2010

    Fuel injected? If so cycle key off and to run position 3 or 4 times then turn over. If this helps your fuel pump is going bad..

  • Anonymous Mar 30, 2014

    car will not start every time. Takes several attempt to start. Have replaced battery and alternator.

  • Anonymous Mar 30, 2014

    car wil not start first time. It takes several attempts to start. I have replaced the battery and alternator.



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Malfunctioning fuel system, Fuel injector[s] leaking
Check fuel pump,fuel pressure regulator/fuel filter also

Posted on Dec 12, 2009


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2005 dodge durango. This just started last week. Whats happening is my battery is always dead, click click click (starter). it always has juice to run radio and stuff like that when i turn key. Takes a...

A few simple tests and what the results mean.

Obtain a voltmeter that will allow you to read up to about 16-17 volts DC.

1. Start vehicle, attach voltmeter to battery (red to +) (black to -) and read voltage. *Note: you are reading the output of the alternator with it running.
If Voltage is about 14-15v, alternator is good. If less than 14v, or very high 16+v, likely alternator(or voltage regulator) is not working properly. Have alternator checked at local auto parts place, replacement may be necessary.
If voltage is in 14-15v range alternator is working properly. Battery replacement is next logical problem, it can can be tested at the local auto parts store as well.

**If a charging system is good, and battery is good, check battery cables. Bypass battery cables by connecting battery directly to starter with jumper cables. If car starts with battery cables connected and not when disconnected, replace battery cables.

2. A charged battery will read at about 13.5 v while engine is turned off, but it does indicate if a battery will hold a charge.

Best of luck resolving this problem.

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Ok, if the cranking amps is like 70AMPs or 100 AMPS as measured by an inductive ammeter on the battery cable when starting, and it does NOT start, then it's a bad starter.

However, if it does start, that's normal.

On a car that old, I would check that the battery cable ends are squeaky clean, wire brushed, or even replaced if cleaning is not possible.

Usually, a battery that is tested good will be good under a load test.

Also, try to use an ammeter to find out if there is a drain on the battery above .2 A while it sits there turned off. This could lead to a solution if you investigate where a short may be.

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Truck Wont Start and Battery Runs Down.

get a load test done on you battery and alter nator and check your starter for corrision check battery connections before you jump start it and when hooking up cables to your truck let it charge for a few minutes before you crank it if alternator is fried it will only run on juice of battery then will die.the clicking sound is your starter trying to engage but not enough cranking amps left in battery if you can get it going or take the battery out and take to a good auto shop and get them to load test it no point replacing a good battery just to find out it is alternator or starter
I personaaly think it may be alternator but suggest you test if battery is good starter as well ! more thing check that battery terminals are clean and tight

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