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ON A 2000 CADILLAC DEVILLE 4.6,WHAT SIZE BOLTS/SCREWS HOLDS THE IDLE AIR CONTROL IAC ON?

DOES ANYONE KNOW THE ANSWER TO THIS QUESTION........MERRY CHRISTMAS.....

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WOULD A IDLE CONTROL VALVE/IDLE AIR CONTROL BE CAUSING MY 2000 CADILLAC DEVILLE TO IDLE AT 1400 TO 1750 RPM SOMETIMES IT IDLES OK..IS IT A HARD FIX..THANKS...


Try cleaning the throttle plate first . I wouldn't just change the IAC valve without testing , hooking up a scan tool that show engine data.
A few different thing's could cause high idle .The idea is to test all thing's that could cause a high idle till you find the problem. Vacuum leaks , throttle plate sticking because it's gummed up with carbon , varnish build up . Or is the PCM/ECM making it idle that hight etc... Is the throttle cable bound up.

Dec 07, 2016 | 2000 Cadillac DeVille

1 Answer

HOW DO I INSTALL A TPS ON MY 2000 CADILLAC DEVILLE 4.6 ENGINE?


Throttle Position Sensor Replacement
Remove the idle air control (IAC) electrical connector (1) from the IAC sensor (4).
Remove the manifold absolute pressure (MAP) sensor electrical connector from the MAP sensor.
Remove the water pump belt cover.
Remove the TP sensor retaining screws electrical connector (2) from the TP sensor (3).
Remove the TP sensor electrical connector (2) from the TP sensor (3).
May have video on youtube showing how to

Dec 06, 2016 | 2000 Cadillac DeVille

1 Answer

Where's the idle screw on a 2002 Cadillac Deville


No screw - fully computer controlled. Also, there is no idle control sensor - just a throttle position sensor (TPS) and an idle air control (IAC) motor. If you are replacing the IAC, clean the throttle body ports VERY carefully using a recommended solvent.

Sep 16, 2014 | 2002 Cadillac Deville

1 Answer

Where is the idle control valve on the 1999 Cadillac De Ville and is it the same thing as the idler motor?


The IAC or idle air control valve is mounted in the throttle body and uses an air passage that opens or closes to increase idle speed where as an idle motor usually pushes against the throttle plate to increase idle speed most idle motors (stepper motors) where phased out and was never used on port fuel injected engines chances are you have an IAC valve

Dec 11, 2012 | 1999 Cadillac DeVille

1 Answer

I need to know where it's located and how to take off and put on idle control switch


Disconnect the negative cable from the battery terminal...Locate the IAC valve on the side of the engine, near the intake...Remove the electric cable on the back of the IAC valve. Remove the screws that attach to the IAC valve and set them aside...
Pull the IAC out of the Cadillac DeVille and replace with new valve...Connect the IAC valve to the wire and reconnect the screws. Turn the screws so that they are completely tightened...Reconnect the negative cable to the battery and start engine to test valve.

Good luck, i hope this helps.

Jun 30, 2011 | 1999 Cadillac DeVille

1 Answer

Can i leave my iac sensor unplugged on my 2001 cadillac deville it runs fine without it


IAC yes you can your IAC is idle air control why dont you use a throttle body cleaner see if that solves your concern

Jun 08, 2011 | Cadillac DeVille Cars & Trucks

1 Answer

Where can i find the ect sensor on my 1999 cadillac deville


Click over pic for zoom...

zjlimited_1119.jpg

Fig. Showing the location of MAP Sensor and other components on the front of the engine: 1. Manifold Absolute Pressure (MAP) Sensor; 2. Idle Air Control (IAC) Valve; 3. Engine Coolant Temperature (ECT) Sensor; 4. Throttle Position (TP) Sensor

zjlimited_1120.jpg

Fig. Engine coolant temperature sensor (1).

Apr 28, 2011 | 1999 Cadillac DeVille

3 Answers

My 2000 ranger idles really low and sonetimes even dies. ihave to push gas pedal little bit to get it started


The Idle Air Control (IAC) is not working.... This is a very common problem and very easy to fix. The IAC will run you about $50 (USD) and the only tools needed is a 8mm socket. Disconnect the electrical connector, remove the 2 8mm hex screws, remove IAC. Reverse order to install.

It looks like the picture below


dttech_6.jpg

Mar 25, 2011 | 2000 Ford Ranger SuperCab

1 Answer

Idles high what can i do.


Get the IAC valve checked.Remove the Iac valve from the throttle body. It is on the side facing the front higher than the tps sensor. It has a 4 wire connector. Make sure this is clean. If it is dirty/dusty then clean it. This valve controls the idle speed. After cleaning it turn the ignition on with the engine off. The Iac should move in and out to find the stops. If it does not move you have either bad wiring, Iac or pcm. Most likely is Iac.
-------- For safety measures,before removing the IAC make sure you don't have any vacuum hoses unplugged. Next make sure the throttle blade closes all the way.Iac is short for idle air control valve. ------- Thanks.Helpmech.

Nov 13, 2010 | 2000 Cadillac DeVille

1 Answer

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.



da3669e.gif

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.

3ccd55e.gif

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).

Mar 06, 2010 | 1999 Chrysler 300M

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