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Jim Grant Tech Tips Jim Grant Tech Tips
A collection of helpful articles based on reader submissions
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  Jim Grant's Tech TipsJim Grant's Tech Tips
Below is a collection of Jim Grant's Tech Tips sorted by Vehicle Make. These Tech Tips were answers to questions submitted to Jim by users over the course of many years.
If you have any questions, please feel free to email us.



Lincoln - Mercury
  Jim Grant's Tech Tips

'92 Chevy Silverado, Starter Problem?

Q: I'm having a problem on my ‘92 Silverado PU. I have already replaced the starter/solenoid, positive cable, & battery. Should I replace the starter again or can you suggest a procedure to verify starter/solenoid? I ohmed out the ground from battery to engine block and it reads ~0-1 ohms, but when I measure between battery to frame I get a little higher reading 7-9 ohms. It seems that the ground cable behind the engine head is the cause for the higher reading, but I’m not sure if that’s normal? I searched the Internet looking for a cure for this problem, but most of them say replace the starter & install a heat shield, but that has already been done. My next step is to unbolt the starter and add a remote starter switch with external ground. Any help would be great......Sal

A: Sal, you did great until you used an ohm meter to check the condition of the battery cables. Why is that? I could cut all but one strand of the wires in a battery cable and you would still get a good ohm meter reading. That one strand of wire could never let enough electricity through to allow a starter to work. The best test for proving that the battery cables and their connections are good is called a voltage drop test. A voltage drop test is performed when the electrical circuit is active, current flowing. When testing under these dynamic conditions you get a true picture of an electrical circuit’s ability to allow electrical energy, current to flow. This test works great on everything from battery cables to computer grounds. The instructions to your multimeter should tell you how to perform a voltage drop test. If not, go to the automotive section of They build some of the best automotive test equipment there is and they’re a very helpful company.

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