Q: Possible vacuum leak causing engine to rev while parked.
Engine revs while in park. Someone suggested it might be a vacuum leak.
It is possible that you may have a vacuum leak and if you do the computer will generate a code for system too lean. I would have a technician come out and inspect the codes on the computer and see if you do in fact have a vacuum leak.
The statements expressed above are only for informational purposes and should be independently verified. Please see our
terms of service
for more details
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
What others are asking
How Often Does the Mass Air Flow Sensor Need to Be Replaced?
Mass airflow sensors (MAF) have no expiration date. They are not included on the manufacturer’s scheduled maintenance list of things to replace based on mileage, like spark plugs (https://www.yourmechanic.com/services/spark-plugs-replacement) or filters. They can remain in service indefinitely as long as...
What does the Charging System light on the dash mean?
While there are several very important warning lights on the dash, if your Charging System light comes on, it means there’s a problem with one or more components in the system. The light looks like a little battery and it...
What does the odometer do?
Your car’s odometer does one thing – it shows you the mileage on the engine. This number cannot be changed. In fact, it’s against the law to tamper with your odometer. There are two trip odometers available that can be...
How do I adjust the volume?
The volume of your sound system is adjusted via the volume control knob, which is on the top left corner of the system, and is also the power button. Rotate the knob clockwise to increase the volume, or rotate the...
Heater broken
Hi. When a heater core fails, it usually fails by leaking coolant into the passenger compartment in the vehicle. If your problem is that hot air is not being blown out of your vents, you could have several other issues....
High idling, 8800 RPM
Hello there, 8800 is a very high idle. Most vehicles max out at between 6000-7000 RPM. If the vehicle idles at 800 RPM, then this would be considered normal in most cases, unless the idle fluctuates unusually. If the AC...
The car is overheating and losing water, but can't see traces of a leak
This may be also related potentially to a blown head gasket. If this is the case you will be losing coolant consistently and the car will overheat (https://www.yourmechanic.com/services/car-is-overheating-inspection). You may also notice traces of white smoke (https://www.yourmechanic.com/services/smoke-from-engine-or-exhaust-inspection) coming from the...
Drivers side rear view mirror defogger not working and how do I repair?
Hello, thank you for writing in. The defroster within the mirror is rather simple. It uses a resistor to collect electrons which ends up resulting in heat. it is this heat that is used to defrost/defog the mirror. If the...
Electrical - car battery positive temporarily touched negative - where is the problem?
Reverse polarity, at the battery, in a 12 volt electrical system on a car can cause a variety of effects including damaging the alternator, diodes and the numerous microprocessors on a vehicle such as those in the powertrain control module...
Related articles
Symptoms of a Bad or Failing Vacuum Pump
Common signs include poor fuel efficiency, difficulty pressing the brake pedal, oil leaking under the engine, and the AC not working.
How Long Does a Front Output Shaft Oil Seal Last?
For For those who operate a four-wheel drive or all-wheel drive vehicle, there are a number of important parts that are necessary. The front output shaft oil seal is one of those parts, and is a gasket that is circular...
How Do I Prepare My Car for Summer?
Summer's Summer's heat, dust, and stop-and-go traffic will take their tolls on your vehicle. Follow these tips to ensure optimum wellness of your car: Air Conditioning: Have your air conditioning inspected (https://www.yourmechanic.com/services/heating-ac-inspection) by a qualified technician. Newer models have cabin...
Browse other content
Estimates
Cities
Maintenance