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How to test the idle air control motor on dodge dakota 1999

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Use a scan tool to command it up & down

At home,no scan software?

Only can clean or replace it.

Posted on Dec 04, 2012

  • 1 more comment 
  • Bob Patterson Dec 04, 2012

    Thank you for your answer. I have a handheld scanner that several weeks ago showed no codes when checking for cause of "no start" condition. Checking under hood found good spark at coil and center dist. cap, but none at plugs. Replaced crank and cam sensors, tested wiring from pcm to cam sensor, looked over all grounds that I could find, charged battery, cleaned terminals. decided to-day to try scanner again, this time showed a 505 code. Removed idle motor, it was dirty, cleaned and reinstaled but not pluged in until ignition turned on, no movement or sound, so removed it again and pulled plunger out to seat it, tried same again with same results, tested wiring for power, two showed had power and other two not sure how to test ? This brings me back to original question, need to determine if this unit works or not. BTW I am old school auto mechanic.

  • Anonymous Dec 04, 2012

    You will need a wiring diagram from a local shop off Alldata or Mitchell of the part of the electrical you want to check out,can't guess . As I said you can use the scan tool to command the IAC solenoid. Back probe the TPS Sensor & see if both sides are good,a scope would be what you need but you can play with a volt meter for some practice time

  • Bob Patterson Dec 04, 2012

    Thank you, give all a try. I have the factory Chrysler service manual to use. Let you know how it turns out.



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SOURCE: dodge dakota wont idle

You might have a possibilty of a vacume leak check all vacume line connections.

Posted on Nov 30, 2008

66 chrgr
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SOURCE: 1992 dodge dakota v8 5.2l sputters and back fires at a steady

a common problem with these engines is a leaky intake gasket which sucks in outside air spray carb cleaner around intake base see if engine idle increases .most likely this is your problem

Posted on Feb 26, 2009

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SOURCE: air blowing warm in 2001 dodge dakota

get the a/c condensor recharged with a freon substitute, i use "red-tek 12a refrigerant", it is much safer than freon and is ozone friendly.

Posted on Apr 27, 2009

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SOURCE: need to replace a idle air control valve on a 1999 300M Chrysler

Removal & Installation

  1. Disconnect the negative battery cable.
  2. Disconnect the IAC electrical connector.
  3. Remove the IAC mounting screws.
  4. Remove the IAC.


To install:
  1. Install the IAC to the throttle body.
  2. Tighten mounting screws to 5.1 Nm (45 inch lbs.) torque.
  3. Attach electrical connector to the IAC.
  4. Connect the negative battery cable.
  1. Disconnect electrical connector from IAC motor.
  2. Disconnect air plenum (where applicable).
  3. Remove two mounting bolts (screws).
  4. Remove IAC motor from throttle body.


To install:
  1. Install IAC motor to throttle body.
  2. Install and tighten two mounting bolts (screws) to 60 inch lbs. (7 Nm) torque.
  3. Install electrical connector.
  4. Connect air plenum (where applicable).

Posted on Mar 06, 2010

  • 55 Answers

SOURCE: where do the vacuum hoses go from the control 1999 Dodge Pickup

first ... Make sure that you have vacuum to your control head. This is normally the black vacuum line. The vacuum than goes to the various vacuum motors on the Heater /AC case. These vacuum motors rarely fail. The normal fault is loss of engine vacuum ..cut line or not secure to engine. second.. a fault with the vacuum reserve reseviour. When the engine needs the vacuum this is your vacuum supply.

Posted on Apr 29, 2010

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sounds like the idle speed motor is bad, rather then paying big bucks for one. see if you can find one at a junk yard. idle air control is on the side of the throttle body just below the tps sensor. (on drivers side) good day! now days there is no setting just the motor to control idling.

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I have a 1999 dodge dakota, manual 5 speed, 5.2L V8, The problem I am having is the idle when standing still is about 1100-1200rpms. When driving and I depress the clutch or put in nuetral the rpm's...

The most common cause of high idle is an intake air leak. It will cause a lean condition to the O2 sensors and the PCM's solution is to increase the fuel mix resulting in faster idle. It can also cause a Check Engine Light if the idle remains too high for too long. Do a smoke test or soapy water test around the intake manifold and throttle body. If you detect any leaks, seal them and try again.

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Will not idle must stay on gas

Not sure what engine but a common cause of stalling is the IAC motor (idle air control motor). I'd grab a spray can of " throttle body cleaner", and pull IAC motor off, clean the pintle (pointed part) well & spray the port it came out of real good to & re-install & try it. If it helps for a while & starts doing it again later, replace the IAC motor.

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1992 dodge dakota v8 5.2l sputters and back fires at a steady

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if battery is weak the idle air control solenoid will search for the right position and stall have battery load tested if good put in a idle air control solenoid..

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'96 Dodge Dakota will crank, but won't run.

a bad crank sensor or dist pickup plate can cause this.... check the fuses in the fuse block under the hood for any blown ..... a bad auto shut down relay may cause it .....try putting a test light on the green and orange wire and see if it lights up when you try to crank it

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