Skip the auto shop - Our mechanics make house calls

Q: My car needs a throttle body cleaning, but I'm worried about the idle and relearning process

asked by on

I have a Nissan 2006 pathfinder LE. The throttle has never been cleaned. I am sure it is dirty with deposits. I am not having any problems with idling, crank, stall, but I am sure it has auto adjusted some to compensate for reduced air flow.

My concern is if you clean the throttle area, will you relearn the idle speeds before leaving? I know they are electric now and there is a specific process and timing required.

My car has 130000 miles.
My car has an automatic transmission.

A: Hi there. This is a very good question that...

Hi there. This is a very good question that I wish more people would ask. Your 2006 Pathfinder’s engine control unit (ECU) does evolve and learn as it goes. Anytime you clean the throttle body or complete major "routine" service, it’s always a good idea to reset the ECU by clearing all stored error codes and resetting the system. This should reduce any timing adjustment issues that have been adjusted previously. If you have a digital scanner, you can complete this on your own. Otherwise, feel free to contact a mobile technician, such as one from YourMechanic, who can complete an inspection and scan your vehicle’s computer or clean your throttle body for you.

Was this answer helpful?
Recommended services
Get a Quote

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: Car does not accelerate above 2000 RPM

You either have a clogged fuel filter or low fuel pressure. Change the fuel filter and then check the pressure. If the problem continues then you may need to have a diagnosis done on the mass air flow sensor or...

Q: Ford Probe GT either revs too high or too low to the point of stalling

I know Fords and a lot of times it is the throttle having problems. So, you either want to clean the throttle yourself (see my video "cleaning the throttle on your car") or have a mechanic clean the throttle body...

Q: What does the Nissan Intelligent Key™ insertion indicator mean?

Your car’s Intelligent Key™ allows you to start the car without the need for a physical key. However, the system isn’t foolproof. It requires that your Intelligent Key™ be programmed and have a good battery. The Intelligent Key™ insertion indicator...

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...
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...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...