Skip the auto shop - Our mechanics make house calls

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.

A: Hello. Low idling issues can be caused by s...

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 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

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!

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 2003 Chevrolet Impala whines when turning left.

Hi There, It sounds like you may have a power steering pump that may beginning to fail. When the pump is beginning to fail, it may produce a whining sound that may not necessarily be limited to turning one way...

Q: Put the clutch but gets stuck on 5 th gear

You will need to check the gear shift linkage when you move it to fifth gear. The most common problem is the gear shift linkage is binding on the body somewhere. Check to make sure the transmission mounts are tight,...

Q: Heater gets hot but then blows cold when idling or driving.

This may be due to a faulty heater blower motor or potentially a bad heater core. As you may know, the heater core is a small radiator like unit that circulates the hot coolant from the engine through the heater...

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...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.