Question about 2005 Lexus LS400

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I have a 1998 Lexus LS400 with a clicking sound when I try to start the engine )will not turn over the starter). Also both tail lights burnt out like a short caused this. I replaced them both then one blew out again. I've checked the,battery (its new),starter relay and the starter motor they are okay per the shop manual. Please help? ASAP

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  • gpagma Feb 24, 2009

    Thanks but the only problem is the starter is located under the intake manifold in the center of the engine. I've taken apart the battery connectors and burnished them and check the voltage at these terminals, it good(12.8 volts) same as the battery.
    Still just the cklicking sound while turning the key? 
    Thanks WaddyMSUN

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You may have corrosion inside your battery cables or a loose connection somewhere.

If you have a voltmeter connect one lead to the POSITIVE post of the battery and the other to the POSITIVE post on your starter while you have a friend crank the engine
WATCH YOUR HANDS!

This is called a voltage drop test and you should see less than 0.5v on the multimeter while you are trying to start it, if you have high resistance (corrosion bad connections) you will see a higher voltage. 0.5v is the MAX you should see.

Do the same test on the ground side of the circuit, connect to the NEGATIVE battery terminal and the starter case, your voltage reading should be 0.1v or less

Posted on Feb 24, 2009

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