Question about 2000 Volkswagen Jetta TDI

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Idle adaptation at limit

Check engine light is on and the trouble code is P 1582 how i can fix it

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Your cruise control module circuit is reporting low voltage.
Check your battery, all your fuses, as well as the alternator.
You could try replacing the cruise control fuse, and hope that solves the problem. If not go to an auto parts store that has electrical diagnostic equipment and ask if they could identify the source of the problem (could be the module is going bad).

Posted on Feb 08, 2009

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Posted on Jan 02, 2017

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Ford Code P1505 for 1994 Ford Thunderbird Lx


Adaptive Idle Air Control Strategy

The Adaptive Idle Air Control (IAC) strategy is designed to adjust the IAC calibration to correct for wear and aging of components. When engine conditions meet the adaptive strategy learning requirement, the strategy monitors the engine and determines the values required for ideal idle calibration. The adaptive strategy stores these values in a table for reference. This table is used by the PCM as a correction factor when controlling idle speed. The adaptive idle table is stored in Keep Alive Memory (KAM) and retains the learned values even after the engine is shut off. A Diagnostic Trouble Code (DTC) is output to indicate that the adaptive IAC strategy has reached its learning limits.

Diagnostic Trouble Code (DTC) P1505 indicates the IAC system has reached the adaptive clip.

Possible causes:

-- Air leaks.

-- Plugged air filter element.

-- Throttle body/linkage binding.

-- Contaminated or damaged IAC valve assembly.

-- Damaged throttle body.

Sep 22, 2012 | Ford Thunderbird Cars & Trucks

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For years the check engine light has been on on 2000 cabrio convertible. It has failed inspections in the past and have spent hundreds trying to find the problem. Never have been able to and the check...


1582 is likely a vacuum leak somewhere and possibly throttle body that is dirty. 1426 can be a couple of things one of which is a check valve at the fuel tank and or a cracked rubber hose from the tank to the evap. or a bad evap. They are made out of plastic and can and do crack. If the dealer cant fix this then they are really incompetent. The time to get this fixed was under warranty. Also the sensors associated with both those lights should be checked and or replaced. I prefer to test sensors rather then just randomly replace them. The car will normally run fine with these codes because it can adapt. the 1582 code can mess up the mixture though causing it to fail emissions. This is where having a second vehicle is nice. you can take the time to go over each system very carefully till you find the problem. use a vacuum pump and check the hoses and check valves etc. it can be fixed but just because some flunky passed a ASE certification does not mean he understands the physics of how it all works. Too many dealers have such mechanics, they can change a tire but have no idea how to use a scope to figure out the tough ones. They would rather sell you a new car. Find a rundown shop somewhere and ask the mechanic how he would go about fixing your problem. If he can give a good process that includes the tank the vac lines and plastic connectors and sensor testing then you probably have a good one.

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1997 Hyundai Excel 1.5l, check engine light comes on and the idle is up and down at anytime. umm also bunnyhops sometimes. could this be the idle sensor or throttle sensor or something else?? thanks


Did the 'Check Engine' Light come ON? Whenever the 'CHECK ENGINE' light comes on, the ECU (Engine Control Unit) sets a Diagnostic Trouble Code (DTC). These codes identify the particular engine management system which caused the light to come on.
You'll need to use/find an OBDII (On-Board Diagnostic) Scanner to retrieve any code which have been stored in the ECU computer. Afterward, we might be able to help you DIAGNOSE and perhaps eventually fix the problem.

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2 Answers

WON'T PASS EMISSIONS


DIAGNOSTIC TROUBLE CODE (P1582 TO P1613) DTC, DTC text, Corrective action. SAE, VAG, P1582, 17990, Idle Adaptation at Limit.

Check intake for leaks, and or loose vaccum hoses.

Sep 17, 2009 | 1998 Volkswagen Jetta

1 Answer

94 thunderbird code 1505


Diagnostic Trouble Code (DTC) P1505 indicates the IAC system has reached the adaptive clip.
Possible causes:
  • Air leaks.
  • Plugged air filter element.
  • Throttle body/linkage binding.
  • Contaminated or damaged IAC valve assembly.
  • Damaged throttle body
The Adaptive Idle Air Control (IAC) strategy is designed to adjust the IAC calibration to correct for wear and aging of components. When engine conditions meet the adaptive strategy learning requirement, the strategy monitors the engine and determines the values required for ideal idle calibration. The adaptive strategy stores these values in a table for reference. This table is used by the PCM as a correction factor when controlling idle speed. The adaptive idle table is stored in Keep Alive Memory (KAM) and retains the learned values even after the engine is shut off. A Diagnostic Trouble Code (DTC) is output to indicate that the adaptive IAC strategy has reached its learning limits.
Whenever an IAC component is replaced or cleaned or a service affecting idle is performed, it is recommended that KAM be cleared. This is necessary so the idle strategy does not use the previously learned adaptive values.
To clear KAM, refer to PCM Reset in Section 2. It is important to note that erasing DTCs with a scan tool does not reset the adaptive idle table.
Once KAM has been reset, the engine must idle for fifteen minutes (actual time varies between strategies) to learn new adaptive values. Idle quality will improve as the strategy adapts. Adaptation occurs in four separate modes. The modes are transmission select in neutral with air conditioning on; transmission select in neutral with air conditioning off; transmission select in drive with air conditioning on; and transmission select in drive with air conditioning off.

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3 Answers

ASM 2525 NO ppm TAILPIPE EMISSIONS failure


have you had the the engine codes pulled and reset?
and if so what are your engine codes?
i dont know of any car that will pass emissions test with the engine light on.
we cure your trouble that caused your engine light to come on and you will pass your test.
later
paul

Nov 24, 2008 | 2002 Toyota Sienna

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