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Luke Munoz Posted on Feb 23, 2017
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Where is the IAC VALVE located on a 1992 mercury grand Marquis

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jack layton

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  • Mercury Master 5,569 Answers
  • Posted on Feb 23, 2017
jack layton
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Should be attached to throttle-body. two wire connector, wire colors, red, and white with lite blue tracer.
Where is the IAC VALVE located on a 1992 mercury g - iac 1-d0y1d1jyikdpmr2b2xh0kfds-4-0.jpg

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emissionwiz

Marvin

  • 85242 Answers
  • Posted on Dec 15, 2008

SOURCE: 2007 Mercury Grand Marquis required oil weight

If u have a moderate climate, 10W-30W, if cold climate 5W-30W, do not use any heavier weight of oils.

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Molson02536

Harvey N Tawatao

  • 3854 Answers
  • Posted on May 28, 2009

SOURCE: IAC Valve Location - 1996 Jeep Grand Cherokee

The idle air control valve is located on the back of the throttle body. It has an oval electrical connector and two torx screws holding it in. Unplug the connector, remove the two screws then lightly tap the body with a soft faced mallet to loosen it from the body. 
Once you have it out and prior to installing a new valve clean the seat inside the throttle body where the idle control fits. This must be very clean! Installation is in the reverse order. 
 To save some cash, pull the valve out and clean it with throttle body cleaner, this usually fixes the problem for quite a while.
Good luck and hope this helps.

Anonymous

  • 1986 Answers
  • Posted on Oct 13, 2009

SOURCE: how to remove the egr valve on a 1993 mercury

Jack up the passengers side of the car, get a 1 1/16" wrench break loose the fitting to the manifold, hold a 24 mm wrench on the fitting to the manifold, loosen the flare nut on the tube. Then using a 10 mm socket, about 2 inches long, loosen the two nuts under the EGR valve, then take the both out, remove the vacuum hose to the top of the EGR valve, and the sensing line from the small tube. then completely remove the flare nut from the orifice fitting on the manifold. BE CAREFUL with the tube, do not bend it or break it, you may find PB blaster useful the night before on a cold engine loosen these fittings. Once the EGR valve is out, remove the orifice out of the manifold, remove the tube from the EGR valve, again be careful, mark the tube to EGR position before pulling this off, because the top fitting to EGR needs tightened before you put it back in, it will make the lower fitting difficult if you do not line it up right, dry fitting from under the car is helpful, mark it, and then tighten the top. Clean out the tube, be careful not to bend the little tube, either inside or outside the larger tube, it sticks out inside. Clean the orifice, clean the manifold face carefully not to score it, check for blockage there too. Apply anti-seize to the orifice, put it back in the manifold, then apply anti-seize to the bolts for the EGR valve, and the flare nuts both ends. Apply some silicon to the EGR valve face, just enough to hold the gasket in place, put the new gasket on, start the bolts two turns in the gasket, it will hold them in place, then start them in the manifold, then start the lower flare fitting to orifice, tighten the top bolts, and then the flare nut, connect the vacuum line, connect the sensing line. I just recently did this process, it works, if have other EGR issues, the valve is the easiest.

Anonymous

  • 56 Answers
  • Posted on Jan 24, 2010

SOURCE: what is the spark plug gap specification for a

go to or call an auto pARTS STORE they can tell you the plug gap.

Anonymous

  • 564 Answers
  • Posted on May 08, 2010

SOURCE: how to replace starter +1993 Mercury Grand Marquis

disconnect battery,,jack car up,,put jack stand on frame,,take starter bolts out,(may not be easy),,take wires off starter,,hoped it helped,,

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1995 Mercury Grand Marquis. How many fuses does my digital instruments cluster have please?

Question edited for clarity.
Question moved to model category.

Here is your full fuse box diagram. If your cluster is dark, check the rheostat to adjust brightness. Got grandchildren that like to play 'driving the car'?

Fuse Box Diagram Mercury Grand Marquis (1992-1997)

https://fuse-box.info > mercury > mercury-grand-marq...

Here you will find fuse box diagrams of Mercury Grand Marquis 1992, 1993, 1994, 1995, 1996 and 1997, get information about the location of the fuse panels ..

..
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1992 mercury grand marquis makes valve sounds like they are suffering when i go up an incline or faster, looses power. i also smell overheating, but its not.??

If you are smelling something hot you may have a heater core going bad.Are there any puddles under the car and is your antifreeze level where it should be?
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Can the idle air control be tested

Idle Air Control Valve

Print


OPERATION

The Idle Air Control (IAC) valve adjusts the engine idle speed. The valve is located on the side of the throttle body. The valve is controlled by a duty cycle signal from the PCM and allows air to bypass the throttle plate in order to maintain the proper idle speed.
Do not attempt to clean the IAC valve. Carburetor tune-up cleaners or any type of solvent cleaners will damage the internal components of the valve.


TESTING

See Figure 1

0900c152801e4967.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 1: The IAC can be monitored with an appropriate and Data-stream capable scan tool

  1. Turn the ignition switch to the OFF position.
  2. Disconnect the wiring harness from the IAC valve.
  3. Measure the resistance between the terminals of the valve.

Due to the diode in the solenoid, place the ohmmeter positive lead on the VPWR terminal and the negative lead on the ISC terminal.
  1. Resistance should be 6-13 ohms.
  2. If resistance is not within specification, the valve may be faulty.


REMOVAL & INSTALLATION

  1. Disconnect the negative battery cable.
  2. Detach the IAC solenoid connector.
  3. Remove the 2 retaining bolts and remove the IAC solenoid and gasket from the throttle body.
  4. Installation is the reverse of the removal procedure. Use a new gasket and tighten the retaining bolts to 71-97 inch lbs. (8-11 Nm).

If scraping is necessary to remove old gasket material, be careful not to damage the IAC solenoid or the throttle body gasket surfaces or drop material into the throttle body.
See Figure 2

0900c152801e4968.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 2: IAC solenoid location-4.6L engine

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Where is the Air Temperature Sensor located on a 1992 Mercury Grand Marquis LS ?

If that is what you are asking about it is on the side of the air filter housing.
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How do i remove and clean the IAC

Operation

The Idle Air Control (IAC) valve adjusts the engine idle speed. The valve is located on the side of the throttle body. The valve is controlled by a duty cycle signal from the PCM and allows air to bypass the throttle plate in order to maintain the proper idle speed. Do NOT attempt to clean the IAC valve. Carburetor tune-up cleaners or any type of solvent cleaners will damage the internal components of the valve.
The Idle Air Control (IAC) valve adjusts the engine idle speed. The valve is located on the throttle body. The valve is controlled by a duty cycle signal from the PCM and allows air to bypass the throttle plate in order to maintain the proper idle speed.
Removal & Installation

  1. Disconnect the negative battery cable.
  2. Detach the IAC solenoid connector.
  3. Remove the two retaining bolts and remove the IAC solenoid and gasket from the throttle body.
  4. Installation is the reverse of the removal procedure. Use a new gasket and tighten the retaining bolts to 71-97 inch lbs. (8-11 Nm).
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Emergency fuel shut off switch for 1992 mercury grand marquis

It is in the trunk I can remember which side on a 92 but it will be behind the side trim panel almost straight down from the trunk hindge.
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92 Grand Marquis chugs and dies when at an idle. Also jerks alot

The throttle speed control valve must be cleaned. The valve is located near the throttle body throat. It has an oval flange with two bolts. Unplug it, take it off and clean it out with throttle body cleaner. You will notice a big difference. This is a common issue with this engine.
Please remember to rate this fix.
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Idle air contrtol valve

moz-screenshot.jpgHi jabddbb, here is a picture of the IACV for 92-95 Grand Marquis hope this helps you :)18424f1.jpg
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