Skip the auto shop - Our mechanics make house calls

Q: Car racing and idling high

asked by on

The car is racing, and the low idle is too high. The RPMs do not go all the way back down when I lift my foot off the gas pedal. I personally replaced half of the O2 sensors, but the front right is rusted in. But I doubt that is the problem. Also, the dash light indicates the trunk is open most of the time. It seems as if there is a bad sensor.

Hi, these cars have developed many idle issues over the years and there are a few things to check. All the linkages for the throttle should be inspected to make sure that when you release the pedal, the return spring closes the throttle all the way. You should also have the engine inspected for any vacuum leaks. Our certified technicians here at YourMechanic would be able to inspect your engine and help diagnose the trunk sensor.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
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

Get a quote

What others are asking

Q: My Tahoe is not wanting to start

Hey there. By having to feather the throttle a bit when the motor first starts suggests that you may have a low speed fuel delivery problem. This may be related to a dirty or failing idle air control valve. ...

Q: Car is stalling while idling.

The most common problem with this condition is a faulty crankshaft position sensor. It is located near the transmission and controls ignition timing. if this is bad you may have the engine stall and will not restart. I would recommend...

Q: Will an 94 jaguar xjs alternator fit and work on an 94 jaguar xj6

The XJ6 uses a 120 amp alternator (AC Delco 334-1203) while the XJS uses a 115 amp alternator (AC Delco 334-1859). The terminal connections on the two alternators are NOT in the same position. Inasmuch as the part numbers for...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...