Have to Rev Engine to Keep Car Running

If you have to rev your engine to keep your car running, it’s a sign that there is something wrong with your car. There are a few possible causes for this problem, including:

Idle Air Control Valve

The idle air control valve (IACV) is responsible for controlling the amount of air that enters the engine at idle. If the IACV is faulty, it can cause the engine to idle too low or too high. This can lead to a number of problems, including stalling, rough idling, and decreased fuel economy.

Vacuum Leak

A vacuum leak can also cause the engine to idle too low or too high. A vacuum leak occurs when there is a hole or leak in the intake manifold, which allows air to enter the engine without being measured by the mass airflow sensor. This can cause the engine to run lean, which can lead to a number of problems, including stalling, rough idling, and decreased fuel economy.

Throttle Position Sensor

The throttle position sensor (TPS) is responsible for telling the engine how much throttle is being applied. If the TPS is faulty, it can send incorrect signals to the engine, which can cause the engine to idle too low or too high. This can lead to a number of problems, including stalling, rough idling, and decreased fuel economy.

Fuel Injector

A faulty fuel injector can also cause the engine to idle too low or too high. A faulty fuel injector can deliver too much or too little fuel to the engine, which can cause the engine to run rich or lean. This can lead to a number of problems, including stalling, rough idling, and decreased fuel economy.

How to Fix

If you have to rev your engine to keep your car running, it’s important to have the problem diagnosed and repaired as soon as possible. Ignoring the problem can lead to more serious problems down the road.

The cost of repairing the problem will vary depending on the cause of the problem. However, most repairs can be completed for a few hundred dollars.