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jmendezsal100

jmende ... 1/4/2019

2010 Chevrolet Malibu LT 6 Cyl 3.60L

Preventive Maintenance

Car wont start after warming up.

The starter and starter solenoid have been changed, alternator and battery/battery terminals are brand new, when the car is cold it starts right up perfectly. after it gets to normal operating temperature and the car is turned off (lets say you get to your destination), if you try to turn it on a few minutes later it will not start, no crank, nothing. lights will turn on, a/c, radio everything electrical works. After letting the car cool down with the hood open (for about 45 minutes) the vehicle starts right up. I have no idea what causes this. please help.

1 Answer


Jimm

Jimm 1/5/2019

Dirty terminals, old battery, extreme temps - all can lead to the battery not having enough voltage and/or current to start the car. If it drops below a certain voltage during an attempted start (I think it's like 10.5 V) then the computer will not let it start.
Try to place the shifter in N and then try again. If that works then the NSS (neutral safety switch) portion of the shifter may be out of adjustment, dirty, or defective. One thing you might try is popping off the right side cover of the console, then unplugging and replugging the shifter plug (or plugs if there are more, not sure) to clean the terminals. Do it 5-10 times. If that fixes it then you're suffering from fretting corrosion. If it doesn't fix it, try doing the same thing to the BCM plugs, but do so with the battery disconnected just to be sure nothing gets fried.

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