Q: Q: Idling problem

asked by on

got the intake done changed the MAF and replaced the pcv im lost now on what else it could be.

My car has 127000 miles.
My car has an automatic transmission.

A few items could cause the vehicle to idle poorly. The most common are a vacuum leak, MAF sensor, low fuel pressure, idle air control valve, or a throttle body issue. Any of these can cause the idle to be rough. There are a few different kinds of faults with the idle that can happen though and each one would provide a bit more inside. The idle can fluctuate greatly. It can be very high or low, the car may barely run, or the car may have an RPM spike when idling. If you need more help, a qualified technician, such as one from YourMechanic, will be able to diagnose your idling issue and perform any repairs that may be required.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Q: Idling problem

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: Fix code P0325.

If all of those parts have been swapped over from one engine to the other it is possible that one of those parts are the cause considering the engine was replaced and assuming it was rebuilt correctly. If the engine...

Q: Car won't start I can hear it trying to crank. I've just replaced the alternator and battery it just won't turn over...

This suggests that the motor have run out of oil. When the oil pressure gauge reads zero, this means that there is not enough oil pressure inside the motor to properly lubricate engine components properly. When this happens, you may...

Q: Rear end grinding noise

Two possible causes of such noise are wheel bearings and a stuck brake caliper or seized sliding pins on the caliper torque plate. In difficult cases, remote wireless microphones, known as chassis ears, can be used to determine if the...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.