Skip the auto shop - Our mechanics make house calls

Q: okay I had to have it have it jumped one time it wouldn't crank had to have a jump with jumper cables and when yo when I crank it

asked by on

I crank up my truckit sounds real real rough and it shakes shakes from time to time when I put my foot on the accelerator makes a whirring noise I took it to AutoZone and he said it has low voltage and needle alternator but I don't think I alternator was the cause of making that rough idles very rough when I crank it up or drive it sounds like a motorcycle

My car has 225000 miles.
My car has an automatic transmission.

A: If the battery is low and the alternator is...

If the battery is low and the alternator is not charging then the engine may not run at full power. The electrical system if low on voltage will cause the fuel injection and ignition system to not produce enough power. I suggest having the battery and alternator checked and replaced as needed.

If you'd like to get this fixed, consider YourMechanic, as a certified technician can diagnose your rough idle firsthand and help you fix it accordingly.

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

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Starting issue

Hi There, What you are describing generally is caused by a weak battery or a faulty starter solenoid. If the re is a rapid click, this is likely a dead battery. Depending on whether you changed the starter or the...

Q: Transmission

You may be experiencing what's called "Limp Mode." Your Jeep trans staying in 2nd or 3rd and not shifting probably means that it is in limp mode. It is a computer strategy designed to protect the transmission from harm when...

Q: I have little black gas smoke in my muffler

Hi, thanks for writing in. Black smoke coming from the exhaust is usually an indication of a rich fuel condition. When this happens, this can be the result of many things such as faulty fuel injectors, a failing mass air...

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.