Question about 1989 Jeep Wrangler

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My 89 Wrangler will not start except with a charger set on high. Every thing seems to work including lights and gages. It turns over when the key is turned but the starter does not seem to engage. I have a new alternator and have tried several different batterys. With a charger on high it will start.

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If your starter is drawing too much amperage and/or you have poor spark this can happen. Starter will steal necessary amperage depriving ignition system of voltage necessary to operate. To check starter draw, first load test your battery to make sure it is good, then put a volt meter across the battery and crank it over. If voltage drops below 9,5 volts, the starter is drawing too much and needs to be replaced. If it checks out good, check the coil for spark output. spark should easily jump a 1/4'' gap and have a good "snap" to it (not weak and fluffy orange spark)

Posted on Sep 30, 2009

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I would remove the starter and have it tested.

Posted on Sep 30, 2009

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