2005 jeep wrangler, will not start. turn over or nothing. everything else works. new battery, starter checks out fine, fuse and relays under hood check out except that no power to the relay when key is turned to start position. also checked clutch kill switch and it checked out ok .
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Sounds like a faulty / intermittent Earth connection. Check all the battery and earth leads where they connect to the Battery, Engine, Starter Motor and Body. If possible disconnect, clean thoroughly by removing any corrosion or paint that could cause a poor connection, and reconnect making sure all are tight.
First thing you should do is check the starter draw. A simple way of doing that is to put a volt meter on the battery and crank the engine over. Volts should not drop below 9.5 while cranking.Since you replaced the starter, though some can be defective, the odds of getting a defective one with the identical problem you had before are slim. Therefore, it's more likely that you may have a bad ground. Check voltage between the positive terminal of the battery and the block (should read exact battery volts or just slightly less), then check draw again, with meter connected to battery and block. Readings should be identical to first draw test, or very close. Repeat, at the starter housing. If readings are low, clean the battery terminals and the engine end of the ground lead. Repeat testing and see if readings improve. The reason you are doing this is that the starter draws more amps than any other item in the car. A bad ground can increase that draw above what the fuse can handle. Biggest problem is that since it's intermittent, everything may look good when you test. "Blind" cure for that is to use a longer ground wire and attach the engine end to one of the starter bolts. I also recommend that you check the starter relay (in the power distribution center) and any wiring associated with the ignition switch and that relay for grounding and good connections. Check under the dist center as well.
First, using a digital volt/ohmmeter, check the power at the main lead on the starter. It should read full battery voltage. If not check all connections at the battery and to the starter. Next, check the small trigger wire on the starter with the key turned to start. There should be 12v there as well. If not, Check the starter relay and the ignition switch. If you have 12v at the main wire and the trigger wire, replace the starter, providing that you can turn the engine by hand. I can't tell you what has failed but I've just told you how I'd find the problem. Good luck!!
First, make sure you can turn the engine by hand. If you can't then the starter can't turn it either. Have someone else turn the key and look for the source of the click...may be a relay. Go over the starting circuit with a volt meter. Check for power at the starter main terminal and then with the key turned to "start" check for power at the trigger terminal on the starter. Check battery voltage and check relay operation. You have a neutral safety switch on the transmission if its an automatic and a clutch switch if it's a stick. Check them as well. Make sure battery grounding on fender and block are also clean and secure.
This is basic, but first off, try to shift it into neutral, and try to start it. It is easy for the linkage to get out of adjustment, where it thinks the jeep is in gear. If that does not work, make sure you have battery power to the ignition and starter.