Jeremy ... 4/14/2015
2000 Buick LeSabre Custom 6 Cyl 3.80L
Intermittent problem with car not cranking when hot outside.
When I try to start my car when it is hot outside it will not crank. I have to keep trying until the ignition engages. Sometimes I have to shake the car, close the door several times or pound on the steering wheel and then it will crank over. Had this issue last summer then it stopped happening all fall and winter. Now the problem is happening again.
Maybe an issue with ignition switch? As far as the starter circuit, if the starter motor won't crank, then check voltage circuit at the starter. Usually there are two voltage circuits at the starter, one is battery voltage, hot all the time, the other circuit goes hot with key in the crank position. Any testing at the starter, make sure tranny is in park or neutral and the parking brake is set.