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What is the correct idle speed setting? - Cars & Trucks

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Idle speed is 700 rpms in neutral and in drive it may be slightly lower like 650

Posted on Apr 04, 2015

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Posted on Jan 02, 2017

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HOW DO I SET THE IDLE ON A 1989 FORD CROWN VICTORIA??


Bill, you could possibly have a vacuum hose leak. With motor running, open your hood and listen carefully for a hissing sound. If you hear one, try to pinpoint where it's coming from.

Sep 07, 2015 | 1989 Ford Crown Victoria

1 Answer

I changed my spark plugs the other day on my 2010 vw jetta. Since then it idles at 800. Is this normal?


Hello,

Most of the newer cars are set at the factory. This means that the idle can't be adjusted. If you're car was idling higher then this, I would suggest checking the gap in the plugs. If your gap is good, then it might be the idler control sensor. The easiest thing to check is to google the correct idle speeds for your year, make, model and transmission type to see if it's correct. I have a Mercedes C230 (6 speed man) and it idles around 750rpm. Good luck

Mar 02, 2015 | Volkswagen Jetta Cars & Trucks

1 Answer

Correct code P0504?


What Colorado do you have ? 2 wheel or 4 wheel drive ? Sport ,sport LS 3.5L , Z71, Z71 LS. etc. what size engine ? an does it have electronic throttle control ? I have factory service info an it is not showing that code .
DTC P0506

Circuit Description

The throttle actuator control (TAC) motor is controlled by the powertrain control module (PCM). The DC motor located in the throttle body drives the throttle plate. In order to decrease idle speed, the PCM commands the throttle closed reducing air flow into the engine and the idle speed decreases. In order to increase idle speed, the PCM commands the throttle plate open allowing more air to pass the throttle plate. If the actual idle RPM does not match the desired idle RPM within a calibrated time, this DTC sets.

DTC Descriptor

This diagnostic procedure supports the following DTC:
DTC P0506 Idle Speed Low
DTC P0507

Circuit Description

The throttle actuator control (TAC) motor is controlled by the powertrain control module (PCM). The DC motor located in the throttle body drives the throttle plate. In order to decrease idle speed, the PCM commands the throttle closed reducing air flow into the engine and the idle speed decreases. In order to increase idle speed, the PCM commands the throttle plate open allowing more air to pass the throttle plate. If the actual idle RPM does not match the desired idle RPM within a calibrated time, this DTC sets.

DTC Descriptor

This diagnostic procedure supports the following DTC:
DTC P0507 Idle Speed High
Cleaning the throttle body mite take care of it !
Cleaning Cleaning An Electronic Throttle Body Safely

Jan 31, 2015 | 2005 Chevrolet Colorado

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Truck dies when idling


HI
first I would like to tell you, do this procedure only if the 5th digit of your VIN is C or K.

Description

The engine control module (ECM) learns the idle position of the throttle plate to ensure the correct idle. Anytime the throttle body is cleaned or replaced, the ECM must learn the new throttle position. The idle may be unstable or a DTC may set if the throttle position is not learned.

Conditions for Running the Throttle Learn Procedure

• DTCs P0101, P0102, P0103, P0107, P0108, P0111, P0112, P0113, P0506, and P0507 are not set.

• The engine speed is between 450-4,000 RPM.

• The manifold absolute pressure (MAP) is greater than 5 kPa.

• The mass air flow (MAF) is greater than 2 g/s.

• The ignition 1 voltage is greater than 10 volts.

Throttle Learn

Important: Do NOT perform this procedure if DTCs are set. Refer to Diagnostic Trouble Code

(DTC) List - Vehicle.

1. Start and idle the engine in PARK for 3 minutes.

2. With a scan tool, monitor desired and actual RPM.

3. The ECM will start to learn the new idle cells and Desired RPM should start to decrease.

4. Ignition OFF for 60 seconds.

5. Start and idle the engine in PARK for 3 minutes.

6. After the 3 minute run time the engine should be idling normal.

Important: During the drive cycle the check engine light may come on with idle speed DTCs. If idle speed codes are set, clear codes so the ECM can continue to learn.

* If the engine idle speed has not been learned the vehicle will need to be driven at

speeds above 70 km/h (44 mph) with several decelerations and extended idles.

7. After the drive cycle, the engine should be idling normally.

* If the engine idle speed has not been learned, turn OFF the ignition for 60 seconds

and repeat step 6.
8. Once the engine speed has returned to normal, clear DTCs.
Good Luck

Mar 04, 2014 | 1995 GMC Sierra

1 Answer

Still Rough Idle After Battery Disconnect


The first thing to do is not set up the idle speed, but to set the Idle mixture screw to lean best idle setting. First, turn in the mixture screw until the engine dies or runs worse, then back out the screw (recommend turning ¼ to ½ turn at a time). The engine should pick up speed and begin to smooth out.

The battery has nothing to do with the idle speed

Apr 09, 2017 | 2004 Mazda 6

1 Answer

2003 tahoe how to do a idle speed relearn 5.3


All you do is disconnect the battery NEGATIVE cable for 5 minutes and then reconnect, over the next few miles your system will relearn idle. This will not correct any idle problems such as stalling or erratic idle, this would be caused by other problems many of which WILL NOT SET FAULT CODES.

May 25, 2012 | Chevrolet Tahoe Cars & Trucks

1 Answer

The fuel pump was changed,now it idles high.


The idle speed is controlled by an Engine Control Module (ECM).
It needs to be put on a computor to be checked.
The idle air valve provides the control for constant idle speed. In order to set the correct air valve opening to achieve constant idle speed, the fuel injection control unit uses information from the air mass meter, A/C switch, throttle valve switch and the ignition control unit (RPM signal) to regulate the output current to idle air valve. This means, there is alot of things that can make the idle speed go up or down...Hope this was some help to you??

Jul 21, 2011 | 1990 Volvo 740

1 Answer

Engine speed decrease when stert the AC


IDLE AIR CONTROL VALVE IDLE SPEED TOO LOW. IDLE SPEED SHOULD BE 750 - 850 RPM. IDLE SPEED NEED TO BE CORRECT OR IT WILL CAUSE ENGINE RUN ROUGH OR STALL OUT.AC COMPRESSOR WILL TAKE SOME POWER FROM ENGINE WHEN AC IS OPERATING.

Jun 12, 2011 | 1995 Kia Sephia

1 Answer

Disconnected air cond. How to set idle speed lower, there is a device keeps throttle from returning to lower idle speed


This is something that requires a certain procedure that involves the tps being correctly set and the ICS motor adjusted at its full extent and adjusted until the TPS sensor is at a certain voltage value. If it is not set right it will idle too high. I have an 89 seville and I fixed mine. If you want more info and think you can do it , reply. Also, Is your information center working ?

Jul 08, 2009 | 1989 Cadillac Seville

1 Answer

Puttering when stopped


it could possibly be a sensor but i am almost positive it will tell you that your idle speed is too low. You must set your idle speed back to normal. Go to your throttle cable and there should be a screw (maybe two if you have cruise control) that you can move back and forth to control position of throttle spring. Once you have your RPM's set around 800 (or at smooth idle without sounding too high) then you have corrected your idle speed.

Feb 22, 2009 | 2002 Chrysler Sebring

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