I can start the car and drive , but when i shut her down I haved to wait 15 min to restart her. it will turn over and crank but won't start until about 15 min. new plugs , cap rotor,ovr, alternator regulator.could it be the crank position sensor? this car has 89000 miles.this 6 has two sensors, one at the flywheel and the other at the front of the engine.camshaft sensor I believe. the rear crankshaft sensor goes from the ezl to the flywheel. any suggestions? could the fuel relay cause this also. the car starts every moring with no problem until I shut her down, then must wait 15 min to restart.the fuel regulator seems to be ok. no fuel leaking after idle ( a few min when i pull the rubber hose from the regulator.?thanks