Skip the auto shop - Our mechanics make house calls

Q: Difficult startup with a lot of idling when it's cold

asked by on

My car has difficulty starting up when it's cold. It has trouble starting at 40 degrees and below. There is a lot of idling when it finally turns on. When the weather is warm, the car has no issues starting and runs great. The crank shaft position sensor is replaced on the car. I also had fuel pump relay and idle control valve changed. The issue persists still. What else can I check? Thank you in advance.

A: One of the main things that can prevent a v...

One of the main things that can prevent a vehicle from starting in the cold is the battery. Batteries for automobiles are rated by cold cranking amps. This measurement is the amount of amperage the battery can produce at zero degrees Fahrenheit.

If the battery is a few years old, it may not be producing the same amount of amperage that it once did in the cold. I would recommend enlisting the assistance of a qualified mechanic to come and test your battery. If the mechanic determines that your battery is not producing the correct amperage to start the car in the cold, it would be recommended that you replace the battery. Due to the fact that this test is related to the electrical system of the vehicle, it is best that this test is performed by a professional.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: ABS sensor on front hub

Hi, thanks for writing in. The hex bolt size for the ABS sensor on a 2006 GMC Envoy is a 5 millimeter for the front. I believe the rear sensors are placed into the axle rather than the hub and...

Q: Two questions

Brake pads cannot simply be changed without also either re-surfacing the brake rotors or installing brand new rotors. In addition, the sliding pins must be removed from the caliper torque plates and thoroughly cleaned and re-installed. Hopefully, the calipers are...

Q: My car is losing power while I'm driving.

Depending on the make and model of your vehicle, this may be a common sign of a failing mass air flow sensor. The majority of cars from the early 1990's to today are equipped with a mass air flow sensor....

Related articles

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...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...