Question about 2002 Nissan Sentra

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Idle control system RPM high - 2002 Nissan Sentra

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Check all small vacum tubes goin to the throttle body,, does rpm bounce at idle?

Posted on Sep 02, 2010

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6ya6ya
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Posted on Jan 02, 2017

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Molson02536
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SOURCE: Code P0506, Idle control system RPM low

It's common that you get a lot of carbon build up at the base of the throttle body. Give it a good spray cleaning with injector cleaner and dry it with a hair dryer. If you find it still to dirty, you can try it again with a second can or if you can try using Sea Foam that you can buy at an auto parts store like Auto Zone. The Sea foam will clean out the carbon but also create a lot of smoke.
When i say lot's of smoke, just do a search on You Tube for Sea Foam. Good luck and hope this helps.

Posted on May 25, 2009

  • 5 Answers

SOURCE: 2500 to 3000 rpm idle

Change your Thottle positioning Sensor. My 93 lesabre did the same thing and i changed the TPS and it stopped.

Posted on Jun 25, 2009

The GQ
  • 32 Answers

SOURCE: 2000 Blazer 4.3/ idle control, high idle 950 rpm,

Idle air control valve or a vacuum line has a bad leak of sorts

Posted on Oct 08, 2009

  • 202 Answers

SOURCE: 96 RS Camaro High Idle on Cold Start.

you prob need a coolant temp sensor

Posted on Oct 30, 2009

Molson02536
  • 3854 Answers

SOURCE: My idle is running as high as 3000 rpm while

It could also be carbon build up on the throttle body, but regardless the cure is the same. Your going to need to clean the throttle body and the idle air control valve (IAC). With a can of throttle body cleaner, (follow instruction on the can) clean the throttle body blade and the IAC passage way in the throttle body. Once the throttle body is cleaned, with the engine off, turn the ignition key to the on position (engine not running) and wait for 30 seconds and then turn if off for 10 seconds and then start it. This should reset the IAC, if it did not work do it again and see if it helps. If not clean out the IAC passage way again. The turning on and off the ignition reset's the IAC and it may still be stuck with carbon build up. Once the engine has started, Note there will be lots of smoke form the tail pipe, that's normal. It's just the left over throttle body cleaner and carbon being burn off, take's not more then 10 min to burn off. Good luck and this should keep you from replacing the IAC. Oh and don't use Carb cleaner, Carb cleaner is to corrosive to the throttle body gasket.

Posted on Nov 04, 2009

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2 Answers

Code p0507


possible causes are:

Dirty throttle body
Electric throttle control actuator incorrectly adjusted/faulty/damaged
Air leak on Intake
Poor electrical connection to the Intake Air Control valve

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Hi, my rpm stays on high after cleaning the idle control valve


An IAC (idle air control) motor is designed to adjust the engine idle RPM speed by opening and closing an air bypass passage inside the throttle body. The cars computer or ECM (electronic control module) receives information from various sensors and will output signals to adjust the IAC motor in or out to adjust engine idle speed by controlling engine idle air. ----------------------------------------------------------------------------------------
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Low idle p0507 pictures of the part


http://www.autozone.com/autozone/parts/Duralast-Idle-Air-Control-Valve/1999-Buick-Lesabre/_/N-jd47xZ9gsof?itemIdentifier=91113_0_0_Idle control system high(rpm).This is what it states for code P0507.Code P0506 is for low(rpm).Buicks have a history for sensors that go bad and hard to find which one without replacing some that are good.Here is a part to check out,Click on link to view.

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Idle Rpm Too High.


A high idle is caused by either a massive vacuum leak or a sticking idle speed control valve. I would think you have a vacuum leak, use a can of carb spray and shot around the top[ of the engine, if you hit a leak the engine will sound different, repair as needed.

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How can i fix the idle control? idle control system RPM high


replace the idle air control valve



if this helps please rate me good thumbs

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My nissan is showing this code p0507. What is that mean.


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if the idle is to high then you have a defective part in the automatic idle speed control system or a leaking intake manifold gasket or a vacuum hose leaking, idle speed is not adjustable.

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Engine starts,reaches high rpm,then slowly returns to a rough idle, misses badly,no backfire,surges as if searching/adjusting air/ fuel/est,timing light shows mark constantly changing/erratic,engine then...


Vacuum leaks. Check all hoses and intake bolts. Leaking EGR or plugged PCV valve. Air filter plugged. Leaking head gasket. Worn timing chain. Camshaft lobes worn. Valves burned or leaking. Fuel idle control system or sensor. Good luck!

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