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My 2004 Pontiac Aztek is reving and idiling really high when started allso when in park it idles really high. Got the throttle body and fuel lines cleaned still reving high anyone know what it could b.
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With high idle, I usually block off the mouth of throttle body, engine idling, it should kill the engine. If blocking off the mouth of throttle body has very little or no effect on the idle, you got false air getting in there from, somewhere. Just my opinion.
Check the cable to the temp sender unit is attached if so check the unit is working with a ohms meter. check the throttle cable is not binding ,the throttle leaver stop at the throttle body housing should be fully closed .
The most common causes of high idle speed is a faulty idle air control valve, a sticking throttle cable, or dirty throttle body. It could also be a vac leak, but that usually does not come and go.
In most cases the problem is a dirty throttle body or a faulty idle air control valve. The computer controls the idle speed by the amount of air going into the throttle body thru the valve.
Check your throttle body gasket, if it's leaking unmetered air it will idle high, this coupled with a bad ignition coil, plugs not properly gapped or old/worn as well as old/worn spark plug wires will cause a misfire that may not trip the CEL light. Also check your idle air control valve to ensure it's working and clean on the inside of the throttle body.
the idle air control valve is stuck,or there is a vacuum leak.check the vacuum lines,the throttle cable is not sticking and the idle control valve which is on the side of the throttle body and the throttle position sensor.check all the plugs on these for a good connection.
Make sure your throttle cable is not bound up on anything. Also where the throttle cable ends at the throttle body make sure it moves freely and there is nothing obstructing its movement..Rpms are a little too high to be a vacuum leak.
sounds like you have a vacum leak . pop the hood and look for hoses that look like they are disconected or broken . most common are right above the throtle body
ok this sounds easy when you ran the vehicle the computer controled the idiling motor now that you replace the idiling motor the computer hasnt been reset to except the new parameters
once you reset computer this should bring the idle back down to its specified idle
you can also adjust back of gas pedel the idle cable and on the throttle body by the idling screw
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