Question about 2000 BMW 7 Series

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Trouble codes p0011 and p0021

Car runs fine,but when at idle it idles a litle up and down specially with the ac on

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IT HAPPENED THAT SOMEBODY CHANGED THE CLUTCH AND THE FLYWHEEL AND INSTALLED THE WRONG FLYWHEEL AFTER WE INSTALLED A NEW FLYWHEEL THE PROBLEM WAS GONE.BUT THANKS ANYWAY.


ATT.:RAMON JIMENEZ

Posted on Oct 12, 2008

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Have your timing checked as these codes suggest that you are advanced on one bank and retarded on the other bank, also have your coil pack tested. as for surging up and down while the a/c is on this is normal.

Posted on Oct 10, 2008

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1 Answer

As soon as I turn my AC on the motor runs rough and when I turn it off it runs on 8 cylinders perfectly fine, I Check the harness for opens or a short to ground I still haven't found the fan relay


What is year--make--model?
How long since a tune-up? Any applicable trouble codes? Some of the national brand auto stores will check codes for free. I always check for codes, don't care if the cel is on or not.
Some makes and models, if you turn on the ac, the pcm will try to up the idle, so as not to cause idle issues.
Clean the throttle body, check and clean idle air system, see if it helps?

Mar 27, 2016 | AC Cars & Trucks

1 Answer

Have a 2006 jeep liberty that idles up and down and can die. However with the air in cab completely off it idles and runs fine. The air being on is the trigger. Any thoughts to how I can fix this?


Try cleaning the throttle body and throttle plate. Next is the idle air control passage, pintle and seat. If all that fails, look for vacuum leaks which can be crucial at idle where fuel is light and any leak will cause a lean mixture and stalling, especially with AC on and the vehicle in drive usually.

The idle air control valve (IAC) is designed to increase the idle speed when the AC compressor kicks in to prevent the engine from slowing to stall RPM. It also keeps the engine from run-on or dieseling when the car is shut off.

Jan 22, 2016 | Jeep Cars & Trucks

1 Answer

Code p0011 2006 chevy impala: camshaft position actuator


You can read all about your code here:
http://www.obd-codes.com/p0011

Most likely a P0011 DTC will result in one of the following: hard starting, poor idle, and/or stalling. There are potentially other symptoms as well. Of course, when trouble codes are set, the MIL (malfunction indicator lamp, a.k.a. the check engine light) illuminates.

Jul 10, 2015 | 2006 Chevrolet Impala

1 Answer

How to fix fault p0021 and engine failsafe program


(powertrain control module, also called an ECM). That consists of a few different components but the P0021 DTC specifically refers to the camshaft (cam) timing. In this case, if the cam timing is above a set limit (over-advanced), the engine light will be illluminated and the code will be set. The "A" camshaft is either the intake, left, or front camshaft. A P0021 engine code is basically the same as a P0011 code, except this is for Bank 2, not Bank 1.
Symptoms Possible sumptoms of OBD code P0021
Most likely a P0021 DTC will result in one of the following: hard starting, poor idle, and/or stalling. There are potentially other symptoms as well. Of course, when trouble codes are set, the MIL (malfunction indicator lamp, a.k.a. the check engine light) illuminates.
Causes Possible causes of OBD code P0021
A P0021 DTC trouble code may be caused by one or more of the following:
Possible Solutions This DTC code is a result of a mechanical fault of the VCT unit or related components, so there is no need for electrical diagnosis. Refer to vehicle specific repair manual to perform component tests for the VCT unit. Notes: Dealer techs have advanced tools and the ability to follow detailed troubleshooting steps, including the ability to test components using a scan tool.

Jan 24, 2015 | 2008 Land Rover Range Rover

1 Answer

2004 Kia Optima idles rough when AC on; idles fine when AC off -- what is the problem?


Putting on the AC causes power to be taken from the engine, and that is quite usual (unless it's taking excessive power but if there are no noises and it's working ok that's unlikely).
That will slow down the engine (similar to switching on your heated rear window whilst idling)
What you are seeing is the idle is probably a bit slow, and it's too slow with AC on. Have a diagnostic run to check idle speed and mixture at low revs.

May 08, 2014 | 2003 Kia Spectra

1 Answer

Codes on my cayanne p0011 and p0021


Well code 11 is for a problem with the cam sensor signal on bank one and code 21 is the same issue with the sensor on bank two.
Its possible the timing belt has jumped.

Jan 15, 2014 | Cars & Trucks

1 Answer

Code p0011


http://www.datsc.com/tabid/122/OBD-Error-Code/P0011/Diagnostics/Mercedes-Benz/Default.aspx
"..........OBD Code P0011refers to
A code P0011 refers to the VVT (variable valve timing) or VCT (variable camshaft timing) components and the car's PCM (powertrain control module, also called an ECM). That consists of a few different components but the P0011 DTC specifically refers to the camshaft (cam) timing. In this case, if the cam timing is above a set limit (over-advanced), the engine light will be illluminated and the code will be set. The "A" camshaft is either the intake, left, or front camshaft.

SymptomsPossible sumptoms of OBD code P0011
Most likely a P0011 DTC will result in one of the following: hard starting, poor idle, and/or stalling. There are potentially other symptoms as well. Of course, when trouble codes are set, the MIL (malfunction indicator lamp, a.k.a. the check engine light) illuminates.

CausesPossible causes of OBD code P0011
A P0011 DTC trouble code may be caused by one or more of the following: Incorrect camshaft timing Wiring problems (harness/wiring) in intake timing control valve control solenoid system Continuous oil flow to VCT piston chamber Failed timing valve control solenoid (stuck open)

Possible SolutionsThis DTC code is a result of a mechanical fault of the VCT unit or related components, so there is no need for electrical diagnosis. Refer to vehicle specific repair manual to perform component tests for the VCT unit. Notes: Dealer techs have advanced tools and the ability to follow detailed troubleshooting steps, including the ability to test components using a scan tool.

Related CodesP0010 P0012 P0020 P0021 P0022..........."

Oct 04, 2013 | Mercedes-Benz Cars & Trucks

1 Answer

Motor cuts out


Depending on the make model and year, you should have a device that will raise idle speed to cover the load put on the engine by the ac compressor. That device may not be working, or the compressor may be pulling the engine down too much.

May 14, 2013 | Cars & Trucks

1 Answer

Idle flactuating specially when AC is running


This problem is commonly caused by a dirty automatic idle speed control valve and throttle valve but always run a OBD2 fault code as well as the cleaning procedure. 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

Oct 17, 2012 | 1997 Honda Accord

1 Answer

Fault code P0021


Hi there:P0021 - "A" Camshaft Position - Timing Over-Advanced or System Performance (Bank 2)

A code P0021 refers to the VVT (variable valve timing) or VCT (variable camshaft timing) components and the car's PCM (powertrain control module, also called an ECM). That consists of a few different components but the P0021 DTC specifically refers to the camshaft (cam) timing. In this case, if the cam timing is above a set limit (over-advanced), the engine light will be illluminated and the code will be set. The "A" camshaft is either the intake, left, or front camshaft. A P0021 engine code is basically the same as a P0011 code, except this is for Bank 2, not Bank 1.

Most likely a P0021 DTC will result in one of the following: hard starting, poor idle, and/or stalling. There are potentially other symptoms as well. Of course, when trouble codes are set, the MIL (malfunction indicator lamp, a.k.a. the check engine light) illuminates.


A P0021 DTC trouble code may be caused by one or more of the following:Incorrect camshaft timingWiring problems (harness/wiring) in intake timing control valve control solenoid systemContinuous oil flow to VCT piston chamberFailed timing valve control solenoid (stuck open)

Possible Solutions:This DTC code is a result of a mechanical fault of the VCT unit or related components, so there is no need for electrical diagnosis. Refer to vehicle specific repair manual to perform component tests for the VCT unit. Notes: Dealer techs have advanced tools and the ability to follow detailed troubleshooting steps, including the ability to test components using a scan tool.To reset the fuel pump, press the button on the switch. The switch is located immediately below the hole in the trunk side trim.

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Mar 06, 2012 | Cars & Trucks

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