Skip the auto shop - Our mechanics make house calls

Q: Truck will not turn off with ignition. Alternator whines as soon as the battery is hooked up.

asked by on

Put a 1993 chevrolet 350 into a 1995 chevrolet extended cab. Had a 305 in it. Got a new ignition switch check all the grounds except the ones behind the cab. I replaced the iginition switch. Everything is hooked up as it should be and I am just stumbling in a circle. I just can't figure it out.

My car has 260000 miles.
My car has an automatic transmission.

Hi there. If the alternator is whining when the battery is hooked up, then there is a wire hooked up incorrectly in your truck on the charging and starting circuits. Check all of the wiring from the alternator to the battery and fuse box. Then check all off the wiring from the ignition switch to the starter. You may have to replace the alternator. If you need further assistance with your electrical issues, then seek out a professional, such as one from Your Mechanic, to help you.

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
  1. Home
  2. Questions
  3. Truck will not turn off with ignition. Alternator whines as soon as the battery is hooked up.

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: Engine stalls when clutch is released, unable to push while in gear with clutch pedal depressed

This may suggest the transmission synchros may be wearing out. Your transmission has small gear synchronizer rings that help to move the transmission in and out of the various gears. When these begin to wear out, you may notice it...

Q: I have an Altima that stopped accelerating. Battery light and brake light on?

If you have a battery light on then it is most likely the alternator not charging the battery. The brake light may be on since the ABS will not work if the battery voltage drops below 12 volts. You should...

Q: None of my electrical components are working

Hi, thanks for writing in. If nothing operates, the circuit is not complete. What you want to do is select one of the non-working circuits and simply trace the circuit until you find the open. Inasmuch as nothing works, you...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
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.