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The idle on my qr20 nissan engine is too high, how do i get it down?

Qr20 engine is idling too high

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Posted on Jan 02, 2017

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SOURCE: idle control

tps (throttle position sensor) controls the idle and the ideal idle is around 700-850

Posted on Oct 01, 2008

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SOURCE: Idle is very very High

Check under the hood for any small vacuum hoses that are broken or disconnected. You will find a lot of small hoses! Most high idle problems are the result of a vacuum leak. Try idling the engine and spray short bursts of WD40 in different areas under the hood. If the engine idles lower when the stuff is sprayed in an area, that is more than likely where your leak is. Don't go overboard with the WD40, just short bursts.

Posted on Oct 27, 2008

  • 11 Answers

SOURCE: have 1987 nissan sentra wagon 1.6 carb.engine the

Check your Ignition timing before anything
check your plugs see what color they are
red or orange means carb is to lean , black
or oil means to rich then you can go from there
and set mixture screws on carb , let me no how you make out .

Posted on Mar 09, 2009

  • 6 Answers

SOURCE: High Idle

I have a 2001 Nissan Altima and mine did the same thing. We replaced the intake gasket. It costs around $5.50, but it requires several different kinds of tools. We spent over $100 in special sockets, etc. But once you replace that gasket, it will idle better.

Posted on May 14, 2009

  • 242 Answers

SOURCE: the idle is too high at 1500 rpm on my 2003 nissan altima 2.5

yes turn down too around 900

Posted on Dec 24, 2009

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1 Answer

My nissan serena qr20 engine is switching off and the idling is very low. what could be the cause


check for an air/vacuum leak in the manifold gasket area. Check that the accelerator cable/ linkage is connected properly and adjust the idle speed up to around a minimum of 750 rpm

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My qr20 nissan liberty is not starting,when the ignition is on the engine turns but is not starting can anyone help me to fix the problem.All along the the vehicle was moving without problems but it was...


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My 94 nissan patrol won't idle


if you mean it stalls at idle speed then it needs a service, the idle jets seem to be blocked and need a clean.
if you mean the engine stays and high rev and will not go down to idle this might mean the automatic choke is stuck on or the throttle cable is jammed and should be looked at.

I hope this was useful.

Oct 20, 2012 | Cars & Trucks

1 Answer

94 nissan altima won't start and iddle after cleaning IACV 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 PCM (powertrain control module) receives information from various sensors and will output signals to adjust the idle air control motor in or out to adjust engine idle speed by controlling engine idle air. An idle air control motor can fail one of two ways, either the motor short circuits and stops working or the motor will develop high resistance and cause the idle air control motor to react slowly, either failure can cause the engine to stall at idle. When a trouble code scan is performed it sometimes won't always detect a failed or weak idle air control motor.

Oct 08, 2012 | Nissan Altima Cars & Trucks

1 Answer

I have a 1984 nissan 720 pickup truck that i noticed idles high when stopped, then the idle goes low then high and back and forth. What is causing it?


Engine stalling and rough run issue at low speeds

This problem is commonly caused by a dirty automatic idle speed control valve and throttle valve. Buy a can of throttle valve cleaner (do not use carburetor spray cleaner!) from NAPA or Carquest (made by CRC chemicals) and spray it into the air intake while the engine is running, use up about 1/2 the can, engine will try to stall hold the speed up, shut it down and let it soak for 30 minutes, restart and blow out the remaining fluid, shut it down and disconnect the negative battery cable for 5 Min's to reset the base idle control

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1 Answer

92 NISSAN WITH BOGGING AT 2800 3500 RPM AND AT LEVEL SPEED 4CYL AND 5 SPEED


For this types of problem,there are few help inks to troubleshoot the problem.Click the link below to go through the troubleshooting procedure to resolve the issues :----Idles rough and quits when gas pedal is pressed less? http://technoanswers.blogspot.in/2012/01/1999-ford-f-150-idles-rough-and-quits.html-----------van idles rough? http://howtobyme.blogspot.in/2012/01/2004-ford-freestar-van-idles-rough.html
--------------runs lean and idles rough? http://technoanswers.blogspot.in/2012/02/ford-runs-lean-and-idles-rough.html
-----------Car still runs Rough after tune up? http://howtobyme.blogspot.com/2011/12/car-still-runs-rough-after-tune-up.html
------------Idle flair is noticed on car? Rough idle? car will not idle? Erratic idle speed? http://technoanswers.blogspot.in/2012/02/idle-flair-is-noticed-on-car-rough-idle.html
----------High rpm in neutral? Inconsistant high RPM in neutral? http://technoanswers.blogspot.in/2012/02/high-rpm-in-neutral-inconsistant-high.html
------------Engine Backfires? http://technoanswers.blogspot.in/2012/02/jeep-backfires.html----------- Nissan stalls and bucks on Acceleration?

http://technoanswers.blogspot.in/2012/02/nissan-pathfinder-stalls-and-bucks-on.html

-----------
Nissan Pathfinder Backfires? http://technoanswers.blogspot.in/2012/02/nissan-pathfinder-backfires.html
---------How to adjust rpm? http://schematicsdiagram.blogspot.com/2011/12/how-to-adjust-rpm-on-2009-dodge-charger.html
------------Engine cuts out at 3000 RPM? http://schematicsdiagram.blogspot.com/2011/12/engine-cuts-out-at-3000-rpm.html
----------This will help.Thanks.

Feb 17, 2012 | 1992 Nissan Pickup

2 Answers

1995 Nissan Maxima automatic high idle


Idle is set by the compuer, check vacuum lines, a broke ,cracked or missing line will cause higher idle

Jun 20, 2010 | 1995 Nissan Maxima

1 Answer

Idle


i strongly suspect a vacuum leak.. check for disconnected hoses or intake area leaking by spraying carb cleaner around those areas while idling.. if engine personality changes you are close

Mar 13, 2009 | 1988 Nissan Sentra 2 Door

2 Answers

Have 1987 nissan sentra wagon 1.6 carb.engine the problem is an idle problem when I start in the morning or when its had time to cool down I depress the accelorator pedel to set the choke and high idle cam...


Check your Ignition timing before anything
check your plugs see what color they are
red or orange means carb is to lean , black
or oil means to rich then you can go from there
and set mixture screws on carb , let me no how you make out .

Mar 09, 2009 | 1987 Nissan Sentra Wagon

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