Car Won't Start in Cold

A car that won't turn over on a cold morning usually has a battery, fuel, or ignition issue that the cold just exposed.

Cold weather is hard on starting systems. The battery loses cranking power, engine oil thickens and adds resistance, and fuel doesn't vaporize as easily. If your car cranks slowly or not at all, the battery is the most likely problem — even a battery that works fine in warm weather can fail in the cold if it's lost capacity with age. If the engine cranks at normal speed but won't fire, the issue is fuel or ignition, not the battery.

Cold-start problems can also come from a faulty coolant temperature sensor that doesn't tell the computer to add extra fuel for cold conditions. A weak fuel pump that can't build enough pressure for cold-start enrichment, worn spark plugs that can't ignite cold fuel, or a cracked ignition coil that fails when temperatures contract can all prevent starting in the cold.

When your car won't start on a cold Jacksonville morning, you need someone who comes to you. Ez Mobile Mechanic is a mobile mechanic in Jacksonville who diagnoses and repairs cold-start failures at your location — your driveway, apartment parking lot, wherever. No tow truck needed. We serve all of Northeast Florida. Call (904) 788-7272.