Question about 1982 Toyota Toyota Cressida

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My harrier 1999 starts with an un steady engine iddling in the mronings. the airflow meter and throttle body are okay. what could be the problem?

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Harrier jet? lol jk jk vacuum leak .............. find it fast idle sensor if it has one

Posted on Nov 25, 2013

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Cannot get my 2009 colorado into program mode to set tps sensor


What engine ? Are you talking about Throttle Learn ? Did you replace throttle body ?
The engine control module (ECM) learns the idle position of the throttle plate to ensure the correct idle. The learned airflow values are stored within the ECM. These values are learned to adjust for production variation and will continuously learn during the life of the vehicle to compensate for reduced airflow due to coking. Anytime the throttle body airflow rate changes, for example due to cleaning or replacing, the values must be relearned.
A vehicle that had a heavily coked throttle body that has been cleaned or replaced may take several drive cycles to learn out the coking. To accelerate the process, the scan tool has the ability to reset all learned values back to zero. A new ECM will also have values set to zero.
The idle may be unstable or a DTC may set if the learned values do not match the actual airflow.

Throttle Learn
With Scan Tool-Reset
Ignition ON, engine OFF. With a scan tool, perform the Idle Learn Reset in Module Setup.
Start the engine, monitor the TB Idle Airflow Compensation parameter. The TB Idle Airflow Compensation parameter value should equal 0 percent and the engine should be idling at a normal idle speed.
? If the engine is not idling normally, proceed with the Learn portion of the diagnostic.
Clear the DTCs and return to the diagnostic that referred you here.

May 16, 2017 | Cars & Trucks

1 Answer

My motor races to 3000 rpm's when starts and keeps raceing


Sound like you might have a large vacuum leak allowing un-metered air into the engine, either that or your throttle body might be physically sticking open. Possibly a frayed throttle cable.

Jul 17, 2014 | 1996 Buick Park Avenue

1 Answer

My bmw 316i 1997 auto is not idling correctly and stalling?


Bad airflow meter hose: usually noticed after replacing an air filter

Right behind the Mass Airflow Sensor on the underside of the main hose that connects the throttle body to the airbox is the airflow meter hose that connects to the engine. Very easy diagnosis and replacement. If the hose is bad it will have holes or tears in it from decay and may not be fully connected to either the engine or the throttle body hose. some electrical tape can be used as a TEMPORARY fix while you're waiting for the replacement hose. I would suggest using some type of clamp or even a zip tie on the new hose to keep it in place as it can come off after messing around with the airbox.

Dec 24, 2012 | BMW 316i Cars & Trucks

1 Answer

94 trooper startsbut stalls immediatly-changed throttle position sensor,map sensor, and idle air control valve but problem continues


I can't remember exactly, but if there is an airflow meter, check the air intake hose for cracks or looseness. If there is any openings between the throttle body and the airflow meter, the computer will not see the air entering the engine so it will stall right after it starts.

Jun 26, 2011 | Isuzu Trooper Cars & Trucks

1 Answer

Engine will not idle, high idle ok. 1985 aries 2.2L


usually when a car wont iddle it may have a blown head gasket , remove oil filler cap on rocket or tappet cover check for creamy coloured oil , if so blown head gasket , also when morot is cool remove radiator cap and check fro brownish residue under cap if so blown head gasket .
remove each spark plug if one or more of them is white on tip of plug water is getting into cylinder ..

if none of these some carby's or throttle body's have iddle screww which can be adjusted to speed up iddle , or if throttle body it may have an iddle soleniod which may need to be replaced ,
i hope for you is is just and iddle issue , both the solenion and head gasket arnt cheap to fix.
the soliniod although easier to remove and replace its cost is usually .... expensive on most makes of cars , dont know why just because there greedy dealerships !

hope you need only to adjust carby or check timing is o.k

good luck hope this helps

Oct 09, 2010 | 1985 Dodge Aries

1 Answer

Cuts out, runs rough P0174


Code indicates system too lean. Check all of your hoses going into the intake especially the one on the PCV valve. The engine is getting air from other than the throttle body. Air not metered by the mass airflow. listen carefully for a hissing sound.

Dec 22, 2009 | 1999 Ford Expedition

2 Answers

98 volkswagon jetta runs fine but shuts down when going to drive


need more info.does it stumble then die.had anyone look at it recent?does it change with ac on?

Aug 04, 2009 | 1998 Volkswagen Jetta

2 Answers

Mercedes sl500 1999. no throttle


TPS sensor on throttle body is a pentinlskjfhskljmeter hehe ...

May 08, 2009 | 1999 Mercedes-Benz Mercedes Benz Sl Class

1 Answer

1999 Ford Explorer where is the Mass Air Sensor located


The airflow meter is in the air filter box.Unstrap the clamp to get to the filter and on the half thats connect to the hose which runs to the throttle body is where you will find it.There are wires that run into that half.

Mar 05, 2009 | 1999 Ford Explorer

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