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jodeyodoe

jodeyodoe 1/15/2013

1995 Isuzu Pickup S 4 Cyl 2.6L

Engine

What would the problem be if my truck will not start unless it is jumped and the alternator has been tested and works

On a cold night I was low on gas and the truck wouldn't start. We replaced the fuel pump as we thought it was the problem and after that it wouldn't start unless we had it jump started. I am trying to know what to troubleshoot to fix this. Any help would be very nice.

5 Answers


jc_pilapil2002

jc_pilapil2002 1/15/2013

Your battery should be change a new,your battery is discharging

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jodeyodoe

jodeyodoe 1/15/2013

The battery was replaced and the new one was worse (Charged for 4 hours) and the alternator was taken out and checked and works fine too.

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jodeyodoe

jc_pilapil2002 1/15/2013

Check also the starter car,may ther's losses of carbonbrush

jodeyodoe

jodeyodoe 1/15/2013

My fried isn't a certified mechanic and says he believes it is the tumbler. If it was the tumbler would the tumbler work when jumped and not when off the jump?? THanks for your replies!

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Ray

Ray 1/15/2013

If you have to jump start the battery to start the truck, check the battery and cable connections. Battery cables must be clean and tight and the battery must be good.

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Ray

jodeyodoe 1/15/2013

The battery is brand new and the connections to the battery are tight and clean. Could this be the tumbler?

Ray

Mike 1/15/2013

If the truck starts when you jump it, it has to be the battery or connections

jodeyodoe

jodeyodoe 1/15/2013

So no matter what it wouldn't be the ignition or the tumbler? I just really need to know if that is out of our list of options because my friend swears it is that and if not I am out a $80 part. Many thanks!

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jodeyodoe

Mike 1/15/2013

If the ignition switch was bad, attaching a jumper battery will have no affect. Tests need to be performed to determine the cause. What is the battery voltage? Do you have power to the starter when the key is turned?

jodeyodoe

jodeyodoe 1/15/2013

The volts was 11 and yes, the starter has power.

jodeyodoe

Mike 1/15/2013

11 volts is too low. A fully charged battery should be 12.6

jodeyodoe

jodeyodoe 1/15/2013

Now with a brand new battery and fully charged and it still doesn't work....

jodeyodoe

Ray 1/15/2013

I thought you said it starts when you jump it........ The information you are giving doesn't make sense. Does the vehicle start when you jump the battery? yes or no. If it doesn't start check for voltage at the S terminal on the starter when the key is turned to start. If you have voltage the ignition switch is okay and the starter is the problem. Sometimes you can tap the starter with a mallet and it will temporarily work (bad starter). If there is no voltage, the ignition switch may be bad.

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