Question about 2006 Chevrolet Trailblazer

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2006 chevy trailblazer how to adjust idle currently at 500 and need around 700 for proper charging system operation

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  • yadayada
    yadayada May 28, 2011

    The idel speed is controlled by a computer and is not adjustable.

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On the throttle control cable in the back there is an adjustment screw. turn it in nd the idle will adjust

Posted on May 28, 2011

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SOURCE: 2006 trailblazer --- how to adjust idle ----

get computer codes, see if have any codes listed, could have faulty neutral switch computer not detecting in gear, or air by-*** valve, vacuum leaks, check pcv valve,

Posted on Feb 09, 2010

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Why does the idle drop when running ac or heater on 2006 trailblazer


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2006 Chevy Trailblazer is mis fire on cylinder 1 and it is idling too low. Can you tell me what is wrong?


Not without seeing it, but...
Coil pack are common on those. If you have the in-line 6 cylinder, it would be the front cylinder. While idling, unplug the harness for the coil pack on #1, if you have no change in the way it runs, your problem is in that cylinder. Try another to see the difference, as it should stall. I have "swapped" them around to verify the issue.

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At stoplite idle drops to about 500 how do i adjust idle or what part needs to be looked at


{: ) It can't be adjusted manually. If you're not about to change your plugs, at least you should clean the throttle body for carbon deposits, claen the air filter as well.

Oct 27, 2010 | 2006 Chevrolet Trailblazer

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Idle at 250 rpm


Idle Speed Control (ISC) Motor OPERATION Eagle Throttle Body Fuel Injection (TBI) System NOTE: The Eagle TBI system is used only on 2.5L Premier engines. The Idle Speed Control (ISC) motor is mounted to the throttle body and controlled by the PCM. The throttle lever rests against the initial adjustment screw of the actuator (plunger). The idle speed is not adjustable. The initial adjustment screw is only used to establish the initial positioning of the actuator when the ISC motor has been replaced. The actuator extends or retracts to control engine idle speed and to set throttle stop angle during deceleration. Based on inputs from the various engine control system sensors and switches to the PCM supplies current to the ISC motor to adjust the actuator position for the particular operating conditions.
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Aug 05, 2010 | 1995 Dodge Spirit

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I have a 2002 Chevy Impala, it starts great in the morning when the engine is cold, but once the engine warms up it is very difficult to start. It cranks alot and even backfires sometimes. Also I noticed...


Engine is difficult to start when cold
  1. Check the battery condition, battery state of charge and starter motor current draw. Replace the battery if marginal and the starter motor if the current draw is beyond specification.
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  4. Check the engine's tune-up status. Note the tune-up specifications and check for items such as severely worn spark plugs; adjust or replace as needed. On vehicles with manually adjusted valve clearances, check for tight valves and adjust to specification.
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Engine is difficult to start when hot
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Fuel guage moving all over 2006 chevy trailblazer


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Apr 30, 2010 | 2006 Chevrolet Trailblazer

1 Answer

2006 trailblazer --- how to adjust idle ----


get computer codes, see if have any codes listed, could have faulty neutral switch computer not detecting in gear, or air by-*** valve, vacuum leaks, check pcv valve,

Feb 09, 2010 | 2006 Chevrolet Trailblazer

2 Answers

Hi ;battery guage , speedometer ,rpm guage stay bottomed out.fuel guage did same thing couple o days ago but came back normal.


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Low idle code PO506


The dealer is looking for an easy way out, even though it may not be a big problem. They have the proper tools & equipment to diagnose it properly (or at least they should have) and repair it properly. I would insist on getting it taken care of , otherwise head for another dealer, have it repaired & send them the bill.





























Aug 30, 2009 | 2006 Chevrolet Trailblazer

1 Answer

Idle problem on a 2006 chevy trailblazer 4.2


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I hope this helps.

Jul 21, 2009 | 2006 Chevrolet Trailblazer

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