Question about 1998 Volkswagen Passat

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1997 passat 1.8 petrol

Car sometimes runs rough. Fault codes showing are, p1508 idiling system learned value upper limit reached. 00561 mixture adaptation. p0134 02 sensor circuit ( bank 1 sensor 1) no activity detected. p1564 throttle part control par j338: insufficent voltage during basic setting. p1559 throttle part control part j338: fault in basic setting. p0116 engine coolant temp circuit g62: range/performance. No engine light showing on dash

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Posted on Jul 20, 2009

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93 3003 MERCEDES 2.8 DIDNT PASS SMOG NO CHECK ENG LIGHT ON SMOG GUY SAID EGR STUCK IDILES A LITTLE ROUGH BUT RUNS GOOD AT HIGH SPEEDS WHAT DO I DO?


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2001 Passat 1.8 Turbo engine sputtering and hesitating


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2000 stype jaguar runs rough while idiling at stop light. Car sometimes just cut off. Have changed plugs and filter and car is still running rough. It appears that sometimes the gas is not flowing properly...


This fault could be anything from a split or perished vacumn pipe somewhere on the inlet manifold to a mass air flow sensor and i would advise that you ask a local mechanic to have a look for you to see if anything is visable from a quick look at the engine .

Feb 04, 2011 | 2000 Jaguar S-Type

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I have code p0507 & p2187 on my 2004 Saab 93 the idle is rough



Combustion engines operate by burning an air/fuel mixture of about 14.7 to 1-14.7 parts air to 1 part fuel. When the air ratio goes below 14.7 parts, this is called a "rich" mixture. If the air rises above 14.7 parts, it is called a "lean" mixture.

Rich Mixture = Too much fuel, not enough air
Lean Mixture = Too much air, not enough fuel

To keep the engine running properly, the Engine Control Module measures the oxygen content in the exhaust with oxygen sensors and makes adjustments to the mixture by injecting more or less fuel.

P0507 Idle Control System RPM Higher Than Expected

P2187 System too lean at idle

Things to check:
1. MAF
2. Fuel pressure, fuel pump flow rate

Do you have cold air intake?

Run a fuel system cleaner first and reset software. Long Term Fuel Trim Additive. Max Value, Air/Fuel too Lean.

Fault symptom


Malfunction Indicator
Lamp

The engine may stop after starting, run unevenly and misfire or run
at high rpm.


On-board diagnosis

Type of
diagnosis:


Continuous

Enable criteria:

The engine has started and lambda control is active.An additive adaptation is
carried out.Cooling and intake air temperature 60°C.Fuel level at least
12%.

Fault criteria:

The additive adaptation factor is greater than 5.25%.

Diagnostic help

Diagnosis
regards:


Checking air/fuel ratio. With this DTC, the engine will be getting too much air or too little fuel.IMPORTANTA crankcase ventilation leak may be one reason as to why a DTC is set. Check crankcase ventilation function before starting regular troubleshooting.

Functions in the diagnostic
tool related to the fault:


Test value:
•O2S1 lambda
•Additive
Adaptation
•Short Term Fuel Trim
•Purge Adaptation
•Airmass Deviation
from Calculated
•Total Fuel Trim Here's a helpful link for you: http://repairpal.com/OBD-II-Code-P0171-and-P0174



You most likely have a vac leak. Hope this helps Fix Ya! Show some love with positive feedback if this brings you to a solution. Thanks Happy Hanna-kwanz-mas

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Volvo v70, rough running, fault codes p2172 p2101


The exact same set of codes have just come up on my car, the same car and year. Did you solve it? I am thinking cleaning the throttle body first, any help appreciated....

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1 Answer

2002 vw passat....starts fine and drives fine....periodically stalls when braking for stop..this happens after a few miles of driving and is hard to get going again but will start and if reved up a bit I...


It appears that your brake booster system has a major vacuum leak which is causing the engine to go lean and stall. Check the hose between the intake manifold and the brake booster. It may be cracked or loose causing outside air to enter the hose when the brake is applied.

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01247 fault code vw vr6


throttle may need adapted

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2 Answers

99 boxter p1128 and p1130. replaced air mass sensor. no vaccum leaks


Remove the MAF sensor and carefully clean the sensing diodes with some solvent and a q-tip. These codes are commonly caused on this car by a dirty MAF that does not see the air entering the engine so fuel is not added by the computer. Then the computer sees that the mixture is lean by looking at the exhaust gas oxygen (sensor) content and it sets a code because it can't trim fuel delivery to the correct level as the MAF signal has more authority.

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1 Answer

VR6 fault code 00561


This code reads "Mixture Adjustment Control" which could be O^2 sensor or even MAF (mass air flow) sensor in air intake. Your gas/air mix is not being set properly by the computer due to faulty info from engine sensors.

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2001 e-150 stumbles for 5 seconds when first started 4.9


I would investigate the O2 sensors. O2 sensors have a heater on them so that the computer gets a good signal when the car is not up to temperature. When they do not heat up quickly it causes the car to run rough until the car reaches operating temperature.

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