Question about 1992 Ford F150 SuperCab

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Put in new starter, alternator, & battery but drains it & dies.

I have hooked up a new alternator and new starter, but it keeps draining on the battery it dies and will not stay running. How many wires are on the starter and what is the correct way of hooking it up. I have change the starter 3 times, but it just keeps draining the battery. I have rechecked the new alternator and it checks out to be in working order. There seems to be something shorting out some where, but don' t know where or what is doing it. I have also purchased a new battery, but it just drains it, too. Can you please give me some advise or any idea of what maybe to look for.

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It does not take much to drain a battery e.g interior light left on over night etc. OK switch everything off, disconnect the negative lead and fit a multimeter between the battery terminal and detached lead. Set scale range to 1amp. It should read near zero. Methodically remove and reinsert the fuses one at a time noting any changes whilst each fuse is removed. By a process of elimination you will find the fuse that it responsible for draining battery current. This fuse corresponds to the electrical circuit within which there is some fault or short. The starter is unlikely to blame since once the car is running the alternator will more than compensate for any current loss. Just a thought the truck is getting on in years so it could be worth also checking some of the mechanical items that might upset the running if not now certainly in the future: Exhaust GAS Recirculation (EGR) valve and inlet, Throttle Position Sensor (TPS) and Idle Air Control (IAC) valve. All are located fairly close to the throttle body and are really easy to overhaul on a preventative maintenance basis. If you don't know what they are look them up on Youtube

Posted on May 02, 2010

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