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1992 Grand Marquis Ignition switch issue


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Neti
User

Aug 2, 2014, 8:40 PM

Post #1 of 3 (2166 views)
1992 Grand Marquis Ignition switch issue Sign In

Engine: 4.6L V8
Car:1992 Grand Marquis LS

Hello, I've been having an issue with my grand marquis. Yesterday, the ignition key would not come out of the ignition because it refused to move to either RUN, ACC, or LOCK and will only go from OFF to ON.

I changed the ignition lock cylinder hoping to fix the problem, but the new one does the same thing. Next, I removed the ignition switch from the steering column, but I found it to be functional (it moved from stage to stage correctly).

Then, with the ignition switch removed, and the lock cylinder in, I tried to move the key, but still no difference; it will only move from OFF to ON. I took the lock cylinder out, and moved the actuator rod manually, but it has limited movement (just OFF and ON).

Is there anyway to access the actuator components for inspection/repair? The way I see it, they are inside the steering column and cannot be accessed.

Thank you for any suggestions you can give me.


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Aug 3, 2014, 2:48 AM

Post #2 of 3 (2152 views)
Re: 1992 Grand Marquis Ignition switch issue Sign In

Hmmm. Ford and ignition switches didn't get it right for a while around then for several. Two items here, the lock cylinder and the ignition switch which is down more by brake pedal.


Rod didn't move with cylinder removed so I'd look at the ignition switch end. Not certain and info down right now but not sure of access. Guess is you can remove lower dash panels and some under column plastic to see it and or replace it.


I'm a bit confused what you mean ON/OFF and key not coming out suggests you aren't in true OFF position. Check your old cylinder and key probably comes out now as new one does same thing.


If rod is messed up or bent you may have to find used at the age and hope one is already mostly apart in some pick your own parts junkyard for a working rod depending on troubles found.


Ignition switch looks like this which is actuated by the lock cylinder by rod........



Pic may not show from that site but this could jam up there,


T



Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Aug 3, 2014, 6:11 AM

Post #3 of 3 (2146 views)
Re: 1992 Grand Marquis Ignition switch issue Sign In

Here is a TSB on the problem



Article No.
93-3-9
February 3, 1993 ^ IGNITION SWITCH- DIFFICULTY IN FINDING THE LOCK POSITION AND REMOVING THE KEY ^ IGNITION SWITCH - ROUGHNESS OR EXCESSIVE EFFORT IN TURNING THE KEY FROM RUN TO START POSITION ^ IGNITION SWITCH- SOME ACCESSORIES DO NOT OPERATE AFTER KEY RETURNS FROM START POSITION FORD:
1990-93 CROWN VICTORIA, TAURUS LINCOLN-MERCURY:
1990-92 MARK VII
1990-93 GRAND MARQUIS, SABLE
1991-93 CONTINENTAL, TOWN CAR
This TSB is being republished in its entirety to update technical information, including a new grease procedure for vehicles built before 11/01/90 which include the 1990 Mark VII, 1990 Grand Marquis and 1990 Sable. ISSUE:
The following ignition switch/lock cylinder assembly related conditions may be experienced from time to time. They are highly intermittent and may or may not be able to be duplicated at the service facility. ^ Difficulty in finding the key lock position and/or difficulty in removing the key from the lock cylinder. ^ Roughness and/or excessive effort in turning the key from RUN to START position. ^ Key does not fully return from START to RUN after starting vehicle. This allows the vehicle to be driven without some accessories functioning. ACTION:
Replace the ignition switch assembly and ignition lock cylinder assembly. Refer to the following procedure for service details.
IGNITION SWITCH REPLACEMENT 1. Disconnect the battery ground cable and air bag backup supply. 2. Remove RH and LH lower mouldings from the instrument panel by pulling up and snapping out the retainers (Town Car, Crown Victoria, Grand Marquis only). 3. Remove the instrument panel lower trim cover. 4. Remove the tilt lever (if so equipped) by unscrewing it from the column. 5. Rotate the ignition lock cylinder to the RUN position. Using a 1/8" (3.175 mm) drift, depress the lock cylinder retaining pin through the access hole and remove the lock cylinder. 6. Remove the retaining screws from the lower shroud and remove the upper and lower shroud. On Taurus/Sable and Continental vehicles only, remove the four (4) nuts retaining the column skid plate. 7. Loosen the screw securing the harness to the switch and connector. Separate the wire harness from the ignition switch assembly. 8. Remove the two (2) screws securing the ignition switch to the column and remove the ignition switch. 9. When installing the new ignition switch, the switch alignment pin will be in the RUN position.


a. Align the pin on the switch with the slot in the lock/column assembly, Figure 1. b. Position the slot in the lock/column assembly with the index mark on the casting. c. Install and tighten two (2) retaining screws to 5-8 lb.ft. (7-11 N-m). d. To assemble, reverse Steps 8 through 7. NOTE:
TIGHTEN THE CONNECTOR RETAINING BOLT TO 0.8-1.3 N-m (.6-.7 LB.FT.).
Special service ignition lock cylinders with partially cut keys are available and can be installed using the following procedure.
IGNITION LOCK CYLINDER ASSEMBLY REPLACEMENT PROCEDURE 1. Remove the ignition lock cylinder. Refer to the appropriate 1991 Car Service Manual, Section 13-04, for removal details. 2. Use the Ford Rotunda key code cutting package (Tool 127-000003) to measure the depth of cut on the number six tumbler station of the original key.


^ Use this measurement to determine the correct service ignition lock set, Figure 2.


^ Refer to the following Ignition Lock Set Application Chart Figure 3, For correct parts usage. 3. Using the old ignition key, decode tumbler cut numbers 5, 7, 8, 9 and 10 using the called out tool. 4. Cut the new key position numbers 5, 7, 8, 9 and 10 using the called out tool. 5. Check the new key operation in the new ignition lock cylinder and the doors (both keys). 6. Install the new ignition lock cylinder in the steering column. Refer to the appropriate Car Service Manual for service details. 7. Start the vehicle to verify proper operation. NOTE:
MAKE SURE THAT BOTH NEW KEYS WILL RETURN TO THE RUN POSITION FROM THE START POSITION WITHOUT DRAG. FOR FUTURE KEY CODE IDENTIFICATION, RETAIN BOTH OLD AND NEW KEY TAGS.
GREASING PROCEDURE - (VEHICLES BUILT BEFORE 11-1-90) 1. Remove the shift lever rubber cover from the lower slot on the lock cylinder housing and move it out of the way (column shift only). 2. Install the key lock cylinder and rotate it to the ACCESSORY position. 3. Cover the driver's seat carpet under the steering column and instrument panel with plastic or paper covering. CAUTION:
USE CARE IN APPLYING GREASE AS IT IS UNDER PRESSURE AND WILL TEND TO MIGRATE OVER A LARGE AREA. LIGHTLY APPLY FINGER PRESSURE TO SPRAY BUTTON.


4. Using grease (FOAZ-19584-A), spray a liberal amount of grease into slots on the lock cylinder housing as shown in Figure 4. NOTE:
IN ADDITION, FOR VEHICLES BUILT BEFORE NOVEMBER OF 1990, THE LOCK CYLINDER HOUSING MUST BE SPRAYED WITH THE RELEASED GREASE (FOAZ-19584-A). UNDER NO CIRCUMSTANCE SHOULD A SUBSTITUTE LUBRICANT BE USED. 5. Cycle the lock cylinder a number of times to ensure that the grease works its way into the upper actuator area. Regrease if necessary. 6. Wipe off excessive grease from the lock cylinder housing.


7. Remove the ignition lock cylinder from the housing and observe if grease has flowed into this area after performing Step 4. If housing is dry, spray grease in this area, Figure 5. 8. Reassemble the ignition lock assembly.




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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



(This post was edited by Hammer Time on Aug 3, 2014, 6:14 AM)






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