Regarding 2000 nissan quest

Sorry i forget to mention the mileage in my previous post currently about 140000 miles i purchased at 132000 miles i do not know wheather the timing belt changed or not sparkplug ,oilpump and air sensor changed recently my question is wheather is it electical problem or mech problem.

Pls look at the questions posed in your original post. To avoid confusion, it is best to post a reply to the original post and not start a new one.

The mechanic needs to tell you whether he ruled out electrical (battery, alternator) first, or not.