Were is the throttle position sensor on a 1999 alero

1999 Oldsmobile Alero Stumble and Loss of Power 3000rpm

www.2carpros.com/.../oldsmobile-alero-1999-oldsmobile-alero-stumble-...
Sep 28, 2008 - Engine Performance problem 1999 Oldsmobile Alero 6 cyl Front ... Hey All, Had a very rough running Mazda 626 on LPG, engine code FP.

1999 Oldsmobile Alero High Idle Fix - YouTube

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www.youtube.com/watch?v=xBV9BmjFZVs
Jul 4, 2010 - Uploaded by GrindTimeAuto
1999 Oldsmobile Alero High Idle Fix ... How To Fix Or Prevent Stalling, Surging Or Rough Idle, Cleaning Throttle Body and MAF Sensor ...

Could be a number of things causing this:

1. Bad MAF (Mass Air Flow) sensor can cause erratic idling
2. Dirty fuel injectors
3. Dirty or worn spark plugs
4. Bad TPS (Throttle Position Sensor) this controls engine idling speed under all conditions

If you are talking about the "Throttle Position Sensor" you sort-of answered your own question. It is located on the throttle body on the oppsite side of where the throttle cable connects.

Check your throttle position sensor if it is bad and reading wide open it might be cutting out the injector.

Hi,

I have a 2004 Alero ( similar procedure in your model as well ) and I just figured out today and replaced my throttle position sensor. I'm not sure what the black plastic "box" is called that is above the throttle assembly...but I had to remove that to get to the throttle position sensor underneath. If you can locate the two wires that control the throttle assembly...then the throttle position sensor is on the other side of the throttle assembly. I had to remove the large tube that went from the air filter to the black plastic "box" above the throttle assembly. Also disconnected anything else connected to that black plastic "box". Then pulled that "box" up and right there on the left side of the throttle assembly was the throttle assembly sensor. Here is a web page with a picture that helped me figure out where it was :-


http://en.wikipedia.org/wiki/Throttle_position_sensor

http://www.ehow.com/how_4590680_replace-throttle-body-oldsmobile-alero.html

Let me know,if needed further assistance.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

On the 2.4 litre engine it is mounted on the cylinder head.
On the 3.4 litre engine it is mounted under the throttle body near the area where the transmission and engine meet.
Both sensors are held in place by one bolt.

ON THE 4 CYLINER ENGINE CAMSHAFT SENSOR LOCATED AT THE LEFT DRIVERS SIDE OF THE TIMING COVER. THE V - 6 ENGINES CAMSHAFT POSITION SENSOR LOCATED AT THE FRONT OF ENGINE BLOCK BELOW THE POWER STEERING PUMP.

Bolted to the side of the throttle body.

CLICK HERE to see a generic picture with the sensor mounted on the right side.

Theres a black plastic "box" above the throttle assembly...
Remove that to get to the throttle position sensor underneath.
If you can locate the two wires that control the throttle assembly...then the throttle position sensor is on the other side of the throttle assembly. Remove the large tube that goes from the air filter to the black plastic "box" above the throttle assembly.
Also disconnected anything else connected to that black plastic "box". Then pull "box" up and right there on the left side of the throttle assembly is the throttle assembly sensor.



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most likely idle air control sensor or low engine coolant I know sounds funny but IAC uses coolant to regulate idle. Idle air control valve or throttle body positioning sensor.

check your throttle position sensor