Skip the auto shop - Our mechanics make house calls

Q: the car idles rough and dies often at red lights,stop signs, and backing up.

asked by on

The car is dying often and idles rough and shakes a lot.Futhermore the entire gauges on panel are spinning round and resetting and then doing it again and lights on clock radio and interior lights are turning on and off lately.

My car has 46000 miles.
My car has an automatic transmission.

A: Hello. If these issues started at the same ...

Hello. If these issues started at the same time then it sounds like there is an electrical issue. It may be a bad connection or a failing alternator. I usually start by load testing the battery and checking the battery connections as well as the negative ground cable connections. If any are dirty or loose then this will occur. If those are fine then I start the engine and check the output of the alternator. If it is not functioning then that needs to be replaced. If that is also fine then the electrical system will need to be diagnosed with a voltage meter to be able to tell where the voltage is lost. If you are wanting to have this electrical system looked at, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose the electrical issues that are going on and inspect your vehicle's rough idle

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・Save up to 30%

Get a quote

What others are asking

Q: Fuel rail pressure is all over the place and the truck bucks badley going down the road. Only code that comes up is P215a.

The fuel pressure will fluctuate when the motor is bucking. The trick is knowing if the engine is bucking because of fuel pressure, or is the fuel pressure erratic because of the engine bucking. Usually it has nothing to do...

Q: Occasional problems with the engine startup

There are a couple of things that come to mind. A faulty crankshaft position sensor has been known to cause this problem. Scoping the crankshaft sensor on a warm startup would be one way to determine if this is the...

Q: Brakes, turn signal, and driving lights not working.

Hello. There seems to be an electrical fault causing a short to ground in your exterior lighting circuit. This may involve more than changing bulbs and fuses. There may be an internal failure of some component or a broken wire...

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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...