How long will it take for mail to go from Drexel hill PA to Mt laurel nj?

depending on how you go can be $0 to about $15

http://www.state.nj.us/turnpike/toll-rates.html

https://www.paturnpike.com/toll/tollmileage.aspx

2 hours and 29 minutes

Service Manuals Nissan PDF Download
try this link looks good

This is the car and truck section, but here is an answer.
If you follow the route by I-76 the total distance is about 515 miles.
About 250 miles from Cleveland would put you between Bedford PA and Everette PA. The actual halfway point would probably be the junction of I-70 and I-76.

check under the hood

It sounds like a Throttle position sensor is bad replace it. The component is locate near the throttle valve you can locate it by following the throttle cable to the throttle valve.