If your air conditioning only cools while idling and not while driving, it could be due to a few reasons. One possibility is that the AC condenser is receiving inadequate airflow at higher speeds, which can limit its efficiency. Another potential issue could be a failing AC compressor that struggles under the additional load while driving. Lastly, a blocked or dirty radiator could impede airflow, affecting cooling performance.
Check the fan control
2004 chevy cavalier is idling to high
Up to 2004, pull dipstick while idling in park. 2005 and later requires a special tool that the dealer has.
The most likely cause is a faulty engine crankshaft position sensor.
Usually 12-19 MPG, depending on condition of vehicle and driving conditions.
Check the throttle position sensor
oil pressure, as when driving the pressure is incresed could be a faulty sensor or oil pump if the other way around it will be oil level, check oil condition aswell
Driving Design - 2004 TV was released on: USA: May 2004
Golf Cart Driving School - 2004 was released on: USA: November 2004
its your pump
it might be a safety thing
if timing belt brakes while driving,will it damage motor.