Q: What causes the RPM's to jump so high on my 2005 Chevy Impala LS with a 3.8 liter engine

asked by on

The RPMs on my 2005 Chevy Impala LS with a 3.8 liter engine they are jumping real too high and it's idling too high what could be the problem

My car has 141000 miles.
My car has an automatic transmission.

If you are having high idle conditions, then you may be having a couple different problems. The first is the idle air control valve may be stuck open allowing too much air past the throttle body. The valve can be tested and diagnosed with a computer scanner. The next thing could be a vacuum leak in the intake manifold gasket or behind the throttle body. A vacuum leak check would find this problem. The last problem may be a throttle body stuck open causing the problem. This can also be tested by scanning the computer and diagnosing the problem through a pinpoint test. Contact a qualified mechanic to come to you and test and diagnose your high engine idle.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. What causes the RPM's to jump so high on my 2005 Chevy Impala LS with a 3.8 liter engine

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: 2002 Ford Mustang won't start

You need to check for corrosion on the inside of the battery terminals. If they are corroded then you will lose connection to the battery and cannot jump start the battery either. Also check for good cable connections of the...

Q: When im at stop light press on gas car jerks

Hi There, It sounds like your vehicle may be a bit low on transmission fluid or you may potentially have a bad transmission control solenoid. As you know, the transmission works on hydraulic pressure built up from the fluid inside...

Q: Q: Low coolant light came on.

Hi there. Check the coolant level sensor on the radiator and make sure that it's plugged in. If the radiator was replaced, there is a good possibility that the coolant level sensor could have been slightly plugged in and then...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...