my 1991Chevy Lumina Z34 3.4L runs great on road but when its hot and you try to restart it will not crank . after it sits overnight it will crank.
I have replaced the throttle sensor, oxygen senor, crank sensor, idle sensor, new computer, oil sending unit sensor, plugs and wires
Sounds like a bad starter or weak battery. Have the battery load tested. If it's weak replace it. If not, replace the starter. HTH. -Jim
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