...So my brother's toyota 4runner is dead strange thing is that it can be jump started but only when the negative cable is connected to a ground on the top of the engine... it will not work on the negative side of the battery.

Any ideas guys? I know this isn't a 4runner forum but this could be considered general I'm sure.
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2003 Ford Crown Victoria P71 4.6L V8 - 230,xxx miles and counting. Ex Orange County Sheriff Vehicle.
J-Mod, Ported Intake Plenum, Magnaflows, Spectre Intake Filter