Q: Starting in the morning

asked by on

I put in a new battery in my vehicle about a week ago. I went to the auto store to get a electrical test done. Battery, alternator, and starter checks out fine. The vehicle will not start in cold weather. If it is warm or hot outside it starts after a couple cranks. Im trying to out what may be causing the problem?

My car has 207000 miles.
My car has an automatic transmission.

Cold weather can effect your car in a number of ways. To start, we need to know if the engine is cranking but not starting. If the engine is not cranking, or has a slow crank on cold mornings, your attention needs to turn to the battery or starter relay.

In a no or slow crank situation, the cold cranking amp rating on your vehicle’s battery may be lower than is needed. This would mean you need to replace the battery for a new one, or one with higher cranking amps. If the engine cranks but won’t start on cold mornings, look to your oil viscosity and condition, and the antifreeze level and condition. Both fluids when dirty or burned will not have the antifreeze properties the engine needs. Frozen or partially solid oil will stop the engine from cranking over.

If the problems are not cranking, or oil related, also check your fuel pump. Fuel pumps that are weak will have a harder time pushing fuel in cold weather. A fuel filter that is dirty will also cause a huge strain the fuel delivery in cold weather. Both components on the fuel system need to be inspected.

The fuel pump can be heard priming when the key is turned to accessory. If you can hear it attempting to prime but it sounds slow, it’s a sign the pump is weak and needs to be replaced. The fuel filter will have to be removed to be inspected. If you need assistance with this, consider YourMechanic, as one of our mobile technicians can diagnose your starting issue and help you fix it accordingly.

Was this answer helpful?
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. Starting in the morning

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: Q: Cold Starting Problems

As a general rule, car engines do not like cold weather and do not do operate as well in cold weather. When you start your car in the morning and turn the key to on, the coolant temperature sensor immediately...

Q: Q: Speedometer not working

That particular vehicle uses an electronic sensor to operate the speedometer. If your speedometer is not working, that may be a sign that there is a problem with the speedometer sensor or wiring. A problem with the speedometer circuit or...

Q: Starting disabled service throttle. That's all it says, it wont start, what do I do ?

From what you've described, it sounds like you have a problem with your electronic throttle control system. Make sure your battery is good, if it is you may need to replace your throttle control valve to fix this issue in...

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 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...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...