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hesitation

Using the wrong coolant shouldn't have any short-term effects like that. The consequences of using the wrong coolant usually relate to seal and head gasket failures over a long period and if you have replaced it, everything should be fine....

The very first thing to do when you experience power loss or surging issues (https://www.yourmechanic.com/services/engine-idle-speed-is-high-inspection), or interesting gauge readings, is have your vehicle scanned for diagnostic troubleshooting codes (https://www.yourmechanic.com/article/how-to-read-and-understand-check-engine-light-codes-by-jason-unrau). Your car can set these codes and not always illuminate the...

Considering your symptoms, I would suspect that your issue lies within the fuel or ignition system. Without diagnostic equipment, it would be best to have your vehicle inspected by a technician who does. Although you have no Check Engine Light,...

This may be a sign of a dirty or failing mass air flow sensor (https://www.yourmechanic.com/services/mass-airflow-sensor-replacement). The mass air flow sensor reads the air intake as it is mixed with fuel prior to being injected into the motor. When this fails,...

Hesitation is a common sign of a failing mass air flow sensor. This is a unit that monitors the air flow into the engine as it is mixed with fuel to create the optimum air/fuel ratio. When this is not...

You need to pull out the coil and check to see if there is oil in the spark plug hole, or on the plug wire boot. If there is, then replace the valve cover and spark plug boots after cleaning...

This is typically caused by a carburetor problem. Most of the time it is as simple as an adjustment of the mixture. This is something that must only be done by someone with carburetor experience. If you need to have...

Hesitation is not generally caused by transmission faults. With regard to the transmission, if the fluid is "old", it's a good idea to change the fluid and the filter. Simply request transmission fluid service (https://www.yourmechanic.com/services/transmission-fluid-service) and the responding certified mechanic...

This is a common symptom of a failing mass air flow sensor (https://www.yourmechanic.com/services/mass-airflow-sensor-replacement). This is a unit that monitors the air and fuel mixture prior to being injected into the motor. When this is not working properly, this causes an...

Hello, thank you for writing in. One of the most common reasons for black smoke and a loss of power is a rich air-fuel mixture. With the check engine light on, have the vehicle scanned for diagnostic codes. This can...

Check the inlet air tube between the mass airflow sensor and the throttle body for cracks or loose connections. When you put the vehicle in drive it pulls the hose longer and when it's put in reverse it pushes the...

Hi. This issue is usually caused by a switch on the door. It can be the individual window switch or the master driver side switch. I would have a mechanic visually inspect the window (https://www.yourmechanic.com/services/window-is-not-working-inspection) to come up with the...

Hi, thanks for writing in. I would start with testing your battery and alternator with a multi meter. Good batteries (https://www.yourmechanic.com/article/how-to-buy-a-good-quality-car-battery) hold a charge of 12.6 volts or higher. If the battery is low, try to jump start it. If...

You may have spark plug wires that are damaged or the plug you put in got damaged while putting it in the hole. If you accidentally closed the plug gap then the plug will cause a misfire. I recommend removing...

The skipping you are feeling is the engine misfiring. Your engine coils, plugs and plug boots may need replaced. The valve covers may also be leaking oil into the spark plug holes and the cause of the miss fire. I...

There are numerous potential causes for the problem you are having. One thing that comes to mind is a failed engine coolant temperature sensor (https://www.yourmechanic.com/services/coolant-temperature-switch-sensor-replacement) (ETC). The ECT does exactly what it sounds like - it monitors engine temperature. The...

Hesitation can be caused by a number of components even if the check engine light is not on. A bad mass airflow sensor, coolant sensor, throttle position sensor, ignition coil or module, or even a fuel delivery issue. If an...

There are many sensors on a car that the computer relies to tell it what is happening. Things like engine temperature, air density, elevation above sea level, ambient temperature, etc., are all readings that your cars computer uses to determine...

You should first scan the computer to see if there are any stored codes that may indicate the cause of the hesitation. If no codes are present then you should have the throttle body cleaned and the injectors cleaned out....

If your check engine light has been on, then there will be some codes stored in the system. They might not tell you exactly what is wrong, but they can give you some good clues. There will probably at least...