i have an 88 gt 347 explore intake gt40 heads 5 spd and its my dd . new batt , alt , plugs , wires , starter , belt and it wont crank or turn over unless i jump it off itll stay cranked until i turn it off then it wont do anything but click . ive fuses ,wires plug ends and im lost . any help please

 

Check the connections at the battery, if you can move them at all they aren't tight enough. If you still have the issue I would have the battery tested.

 

mustanggt 86 , i did it was @ 14-15 ohms with every thing on and about 12 ohms off but i did i did see a wire that was broke and had 4 wires that went in to 1 yellow wire 2 the starter solenoid but i dont know if i fixed it yet cuz flywheel teeth broke .so iam working on that now..