Skip the auto shop - Our mechanics make house calls

Q: My car will not start - 2001 Nissan Sentra

asked by on

I installed a used engine with 70,000 miles on it. The car started and ran fine I installed a new battery. I parked car to do other repairs when I tried to start it, it would not turn over I tried to jump it no luck I disconnected the starter from the harness and used a switch hooked up to starter solenoid to start car, the engine turned over but did not start I hooked the starter back up to the harness and it did not start or turn over when I turned the key, it gave me the same whrring sound. What could be my problem

My car has 200000 miles.
My car has an automatic transmission.

A: Hi there: It’s possible that the starter i...

Hi there:

It’s possible that the starter is not fully engaging with the flywheel either due to the flywheel not being installed correctly during the engine swap, or the starter not installed correctly. It’s also possible that something in the ignition system became loose after the initial starting and is the source of your issue. There could be multiple mechanical or electrical problems causing the Sentra to not start, which is why you might want to have a mobile mechanic come by to complete a car is hard to start inspection so they can help you diagnose this issue and recommend the right repairs.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Idles fine and works fine when first starts cold then sputters and feels like horrible misfire when hot and idles low

Hi There, What you are describing sounds like an ignition coil pack that may be failing. Ignition coils are prone to this type of erratic functioning or heat cycling when they are beginning to fail due to the temperature fluctuations...

Q: Car needs an oil change

Raise and support the front of the vehicle. Using a drain pan under the engine remove the drain plug and drain the oil. While the oil is draining from the top remove the oil filter housing top cover using the...

Q: Car won't do anything battery good

Hi there: When you start your car, it's 100% completed by power coming from the battery. Once the car starts, the job of powering accessories and components falls on the alternator. If you have no power after inserting your key,...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...