change your batteries or check your starter

 

If you don't have money to fix your old car, how do you pay the difference for the 8.

I would not recommend you fix it yourself, let the mechanic do it for you.

 

Could be the power relay. That happens with Hondas... the sunlight shines on the rea where the relay is... heats it up. Not sure about the Sentras, but the symptoms sound familiar!

Later

 

First thing to do is put a voltmeter on the battery to make sure that it is kicking out enough volts when you turn the key. Second check and make sure that the battery terminals are clean with no corrosion, then disconnect the battery from the electrical system and clean all of the terminals on the starter. Reattach the battery and see if it is better.

Assuming that the above does nothing, then it sounds like a bad starter to me. It's easy to put in, but they are expensive new. Try getting one from a junk yard. Only thing to know in installing a starter is to make absolutely sure that you have removed the battery first.

I'm not really buying the relay theory, but it is possible. In Nissans, there is usually a realy from another system, like cruise control if you have it, that can be switched into the starter relay. If the relay is bad then switching in a known good should be an easy way to check that. Best of luck.

 

In the old days it would be your starter.

 

lol pistons

 

Battery & Starter.