Symptoms of a bad ignition coil include backfiring, bad fuel economy, and stalling and starting issues. Before the ignition coil is replaced, the engine will need to be properly diagnosed to ensure it is the root of the ... More »

There are several different symptoms that may surface if a car has a bad ignition coil, including backfiring, trouble starting the vehicle, engine misfires, stalling and poor gas mileage. Any one of these problems, or an... More »

Symptoms of a bad coil pack include rough engine idling, misfiring, lack of power during acceleration, gasoline odor emanating from the exhaust system and illumination of the check engine light. In newer vehicles, the co... More »

Common signs of a failing ignition coil for a Pontiac Grand Am or other vehicle include hard starting, engine misfiring, noisy engine, stalling, backfiring and poor fuel economy. The ignition coil is an integral componen... More »

Low fuel pressure results in several issues for the engine, including rough idle, poor performance and decreased fuel economy. If the pressure is too low, the engine does not start. Fuel-injected engines are especially s... More »

A faulty fuel injector creates a number of different issues on an engine, including stalling, lower than average fuel economy, a vibrating engine, a rough idle or running too rich. Faulty injectors are tricky to diagnose... More »

Common diagnostic codes for Volvos that cause the Check Engine light to come fully on or blink include emissions-related codes, codes indicating fuel injector malfunction, codes indicating cylinder misfire or knocking, a... More » Vehicles Car Parts & Maintenance