I have tested the battery and alternator and both test fine.
|Coolant Temperature Switch (Sensor) Replacement||$88.34 - $354.95||Get a Quote|
|Ambient Temperature Sensor (Switch) Replacement||$88.25 - $619.54||Get a Quote|
|Instrument Voltage Regulator Replacement||$204.37 - $364.61||Get a Quote|
|Car is hard to start Inspection||$79.99 - $89.99||Get a Quote|
Make sure you have good battery cables and battery terminals as well. Check for any fine cracks on the terminals, which can lead to a loose connection. A faulted sensor like a coolant sensor or air temperature sensor can offer false readings to the ECU and in turn the ECU will send the wrong air-fuel mixture to the engine causing it to start hard or run poorly.
Newer vehicles have a voltage regulator that is integral to the alternator assembly. If the voltage problem is affecting the whole car, this may be the problem. To have all these items checked, I recommend enlisting the help of a qualified mechanic that can inspect the hard start, pinpoint any faults, and perform any repairs that may be needed.
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