Q: Does not idle

asked by on

It starts but the idle is low can't get it to idle properly what am I doing wrong
My car has an automatic transmission.

Hello. Low idling issues can be caused by several faults. Typically they are an effect of poor fuel and spark efficiency. When diagnosing this type of issue, you will want to start with the easiest parts to check, and work your way down the list of possibilities. You will want to start with check for proper spark. You can do this by checking the conditions of your spark plugs. When was the last time you changed them? Plugs can be changed daily and it would only improve your engine performance. The spark plug wires should also be checked for good conduction. You can test the voltage coming to the spark plugs with a spark tester. You can then check the fuel pressure by hooking up a gauge inline. This will test the lines, pump, and filter. If the pressure comes back low, you will want to change the fuel filter, and possibly the pump if the filter doesn’t solve your issues. Unfortunately, you have to proceed with the process of elimination until you find the component at fault.

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. Does not idle

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: What name is given to the bearing after the wheel bearing on a 2006 Pontiac Torrent

In your application, the passenger side CV axle does not use a carrier (center support) bearing. The noise you are describing could be due to failure of the same wheel bearing (not a rare occurrence, please read below), or the...

Q: Coolant leak.

A cooling system pressure test using dedicated equipment will be able to pinpoint the location of your coolant leak. Running a vehicle low on coolant can cause it to overheat, resulting in extensive engine damage. My best advise is to...

Q: Car stalls at low speed

Your idle air control valve can be stuck closed and not raising the idle to keep it from stalling when coming to a stop. Also if you have an engine vacuum leak it can also cause this problem. You did...

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...
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...
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.