Question about Nissan Maxima

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My 2007 Maxima recently has been running on a high idle. I noticed this recently used throttle body cleaner. Does this normally happen?

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If the throttle body is dirty or if you have a vacuum leak, or if the Idle Air Control Valve is bad, these will all cause high idle.

Posted on Nov 10, 2010

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Posted on Jan 02, 2017

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How can I fix high idle?


In theory once the desired idle speed is programmed into the management system, in the absence of such faults as air leaks, sticking idle air control valve and suchlike it should be impossible for the idle speed to be much different from the programmed value because the ECU should continue closing down the amount of air bypassing the throttle butterfly until the idle is around the correct value.

I think you need to go back to basics and double-check the work to ensure everything is as it should be. In the absence of mechanical faults and ignoring the possibility of electronic problems a high idle must be caused by too much air entering the engine, either because the idle air control valve is not closing properly or because the throttle butterfly is not closing fully.

It is worth noting air can enter the intake through leaky diaphragms, split vacuum hoses or faulty pcv systems. It is also worth checking the egr valve if fitted.

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I have a 2007 2.0L Honda Accord. I notice that there is alot of vibration when the car is idling; even when i put it in Park or Neutral. I would be grateful for any suggestions for dealing with this


Try cleaning the throttle body with carburetor cleaner. It could have carbon buildup causing it to run rough. I hope this helps and a can of carb cleaner only cost less than $5.00.

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Sounds like a mass air flow meter problem to me. Carb cleaner is too harsh a cleaner for a mass air meter, there are specific cleaner for this. The unit maybe ruined. Replace the maf.

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1 Answer

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It will be located on the throttle body. You should be able to find a suitable throttle body or carb cleaner at your local auto store.

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Take it to a qualified repair shop , Thinking ??? Also was thinking the MAF sensor or Intake Air sensor might be faulty . TESTING IS THE WAY TO A PROPER FIX !!!!!

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2002 GMC envoy slt 4.2 v6 My question is.. I recently changed the water pump on my wife's envoy. After replacing it the car idles low and high, low and high constantly. No normal idle like before. I...


Sounds like you may have disconnected the battery. Does the rough idle only happen when the defroster or A/C is on? If so clean your throttle body with throttle body cleaner with the battery disconnected. When finished, drive it for 5 or so miles with the defroster / AC off to let the computer relearn the settings. This will solve your problem.

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1 Answer

My idle is running as high as 3000 rpm while driving. When stopped it sometimes comes back to normal. I suspect idle control valve????


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.

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Where is the throttle body on a 96 maxima... and what do I need to access. My car sometime cutt-off while idling and sometime cuts out while driving like its getting no gas. I already changed my fuel...


The throttle body is where the carburetor used to be, in the middle top of the intake manifold where the air intake tube ends.
Use a major brand "Fuel throttle body cleaner" in your gas tank every 6 months or so. Don't use store brand. Ther eis also a spray for the linkage, etc. Use that too... and spray into the throttle body with engine running. Don't let the engine die while spraying into the throttle body.

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1 Answer

Abnormal idling when I am about to make a stop


the throttle body air valve or throttle valve needs cleaning.it has a little carbon build up.it will cause it to idle high.get gum out throttle body cleaner. remove all electrical components.also all plastic and rubber parts the gum out cleaner will destroy it. also replace throttle body gasket.

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replace throttle body gasket. first check to see if carbon has built up around the throttle valves in throttle body if so remove and clean it with throttle body cleaner.and a old tooth brush. besure to remove all electrical components or any thing that plastic or rubber the cleaner will destroy it.

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