Put new battery and new alternator. Parked car for two days and it wouldn't start. Jumped it off and been starting fine for a week. Any suggesting what could be the problem?

Usually a sign of something draining the battery.
The machine test probably showed the battery could hold a charge and the alternator was charging the battery.
You may need to have someone check for a power drain.
When the key switch is off, there may be a weak short to ground or a relay or component that is using power.

A battery from 07 is still decently new to be that bad, but I would check the alternator first, just get the car running and unhook the positive cable from the battery, if the car dies the alternator is bad.

well it sounds like the alternator is not charging properly. car off at battery there should be at least 12.6 volts. jump start car, when running if alternator is good battery voltage should be 14.2 to 14.6 good-day !!

Your battery may be weak, or becoming dead celled!! Replace it with a new one and if the problem persists, replace the alternator!

Even a new battery will go dead if the car is running on the battery instead of the alternator.
Check alternator output.
First charge the battery up.
Then check voltage with a meter from Harbor Freight ($3).
Should be 12.5.
The start engine and rev it up.
Should go over 14.
But also clean and grease battery terminals, alternator terminals, and check engine ground strap.

after u had it jumped u drove it to the zone so the alternator was workin--it seems like the regulator is not functionin to charge batt--theres somethin goin on in the electrics thats frying ur reg these new cars r very complex--do a scan to see any bad codes and a harness wire chec may be helpful

Probably the battery. Take it the chain auto parts place and they will test it for you.

It sounds kind of like you have bad alternator. The alternator uses the engines power to recharge the battery. When you replaced the battery the car ran off battery power untill it died. If the car will run while hooked up to another car while being jump started then the problem is deffinetely the alternator..

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check to make sure the alternator is charging the battery.crank engine while idling the alternator out put should be 13.5 volts to 14.5 volts. if not alternator is not charging the battery.if alternator is charging battery.the battery is weak.if its over 5 years old its more likely battery.if battery not old checks out good .replace battery cables..

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