Question about 1991 Ford Aerostar Extended

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Need schematic for ignition system-has 4 wire dist. pickup and ignition module is mounted on the R/F fender

I need a schematic for late 1991/92 aerostar ignition system. This atuo has a 4 wire pickup on the dist. and the ignition module is mounted on the R/F fender. Where does this circuit get it's ground?

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  • walbers63144 May 25, 2009

    This auto is a late 1991/92 Ford aerostar V6 3.0L. The ignition system is intermittent. Chilton is no help. I need to know what the 4 wires to the dist. pickup do and where the ignition circuit gets it's ground.

  • walbers63144 May 25, 2009

    Was running rough. Changed dist. rotor and cap. Did run better but started to just stop running. Was not getting spark. Cleaned all the connections at the dist. and coil. Right now no matter what I do I can't get a spark from the coil secondary for more than 15-20 seconds and 80% of the time I can't get anything. Sounds like a bad wiring connection to me. I did change the ignition module (CBE40Z) but haven't touched the EEC or distributor pickup. The rotor and cap did need to be changed- were rough. When there was no spark the coil primary had 12V at both terminals. Never got to check when it had spark.

  • walbers63144 May 26, 2009

    Will change the dist. pickup later today.

  • Dave  C
    Dave C May 11, 2010

    I think it would be a very good idea to change the pick-up in the distributor.

  • Dave  C
    Dave C May 11, 2010

    Send a note to dcwhrck at h0tma1L and I will send you that diagram, it's too big for posting.

  • Dave  C
    Dave C May 11, 2010

    I'll get the diagram, but what are the symptoms? Is it dieing completely as you drive, missing, not starting, hot, cold, does it restart right away, or not, at low speed, high speed, under load, at idle?

  • Dave  C
    Dave C May 11, 2010

    What kind of problem are you having? I have the schematic, but it would be helpful to know what your symptoms are. I'll dig up the diagram. and try to post it some ow but this site does not support very much resolution.
    Which engine do you have?


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Resistive cottection between PIP (pin6) wire and connector at the ignition module. Cleaned and soldered wire to connector pin. Runs fine.

Posted on May 28, 2009

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NO POWER TO THE DISTRIBUTOR ON 87 CADI DEVILLE THERE IS POWER TO CAP


I owned a similar 1986 caddy

12 Volts on pink wire to dist with key on

The top of the cap is the HEI Ignition Coil

Inside dist is the pickup coil (no crank sensor)
& ignition module with the 3 or 4 wires

Maybe the module failed- if you have no spark
at plug wires

Mar 14, 2013 | 1987 Cadillac DeVille

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Will turn over without fire, replaced brain and the ignition coil


bet on the module,if it's tfi it's on the side of the dist.85 could be either way,may be the older fender mounted module.
If it's dist. mounted Ford recomends replacing the pick up coil also. There is a wire with a plug on the tfi's ,you remove the "cap" to set the timing,just 2 wires with a gray cap on the end.Maybe that's the wire you mentioned.

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86 gmc 2wd 305 slight cam. At initial start, engined fired and ran great for about 30 min or so at operating temp, then started stumbling and will no longer start. Spark was present at only 5kw though, not...


This works with the 5 prong module on an HEI ignition system with the coil that is mounted on the top of dist. The wires that come out of the back of the dist go to a spark controll module under the dash and they are junk. There is a conector on the wiring harness about 5" from the dist unplug that conector and run a jumper wire from the green wire to the black wire on the dist side and make sure you tape up all wires on dist side to keep them from grounding out. On the other side of the dist where your 12V goes in (batt conection) there are to wires piggybacked on top of each other disconect them from dis and plug only the pink 1 into dist at the batt conection. Where the wires on the back of dist run into firewall there should be a vacume line disconect and plug on engine compartment side. Thats how you do the bypass and the spark control module can be removed from under the dash if you want to but its not hurting anything to leave it there. BEFORE YOU DO ANYTHING MAKE SURE YOU DISCONECT THE BATTERY. When all this is done you mite have to advance your timing 8-15 degrees. I had to advance mine 12 degrees. let me no if you have any problems. kyle yeo

Oct 18, 2010 | 1986 GMC C1500

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My truck starts then runs for around six minutes well missing and backfireing, then it shuts off and i cant get it started again for a couple hours. if i give it to much throutle it kills the motor also....


replace the TFI ignition module (mounted on the outside of the distributor) and the distruibutor pickup ( inside the distributor) and the problem will go away, I would also replace the coil if it is orignal.

here are the parts you need.
UNITED IGNITION WIRE Part # M425
w/ Push-on Type Rotor-Mod. Mounts On Dist; Electronic Ignition
$22.00


5645e51.jpg MOTORCRAFT Part # DU30C Distributor pick up $57.00



574e3e8.jpg STANDARD MOTOR PRODUCTS Part #FD478T Ign Coil $13.00



6cd6d91.jpg

Aug 04, 2010 | 1987 Ford F 150

1 Answer

1996 FORD EXPLORER , MISS FIRE ON CYL # 2, 1ST REPLACED PLUGS AND WIRES, THEN THE COIL PACK AND LAST THE FUEL INJECTOR BUT PROBLEM STILL THERE, ANY HELP WOULD BE GREAT


OK,
Have you tried the following:


Ignition Control Module (ICM) REMOVAL & INSTALLATION NOTE: Only the EEC-IV ignition systems use an external ICM. EEC-V systems have incorperated the ICM into the Power Control Module (PCM).
  1. Disconnect the negative battery cable.
  2. Detach the wiring harness connector(s) from the ICM.
  3. Remove the mounting bolts, then remove the ICM. To install:
  4. Position the ICM onto the inner fender apron and install the mounting bolts. Tighten the bolts to 22–31 inch lbs (2.5–3.5 Nm).
  5. Attach the wiring harness connector(s) to the ICM.
  6. Connect the negative battery cable. Fig. 1: Ignition control module and mounting location on the 2.3L, 2.5L engine 89682g32.gif
    Fig. 2: Ignition control module used on all EEC-IV systems except the 2.3L engine 89682g33.gif
    Fig. 3: Ignition control module mounting on all EEC-IV systems except the 2.3L engine 89682g34.gif
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Jul 11, 2010 | 1996 Ford Explorer

1 Answer

My 1988 2.5 s10 just died and ive been messing around for


change the pickup coil in the dist. or change the whole dist

Jan 14, 2010 | 2000 Chevrolet S-10

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I need a schematic to replace the PCM (Powertrain Control Module)in my 1994 Fodr thunderbird 3.8L V6 without/supercharger ..Is this is Big job for a backyard mechanic and how long should it take, my real...


  1. Easy job and should have no problems here some help
    Disconnect the negative battery cable.
  2. Detach the engine control sensor wiring connector from the ignition control module by pressing down on the locking tab where it is stamped PUSH, and remove the connector.
  3. Remove the ignition module and the module bracket from the front fender apron.
  4. Unfasten the two ignition module retaining screws, then remove the ignition module form the module bracket.

To install:


0900c1528006b5b4.jpg enlarge_icon.gifenlarge_tooltip.gif Fig. Fig. 2: The ignition module on 1994-95 vehicles is mounted on the front fender apron
  1. Install the ignition module onto the module bracket. Tighten the retaining screws to 24-33 inch lbs. (2.7-3.7 Nm).
  2. Position the ignition module and bracket assembly onto the front fender apron. Secure with the retaining bolt and tighten to 35-50 inch lbs. (4-5.6 Nm).
  3. Attach the engine control sensor wiring connector to the ignition module.
  4. Connect the negative battery cable.

Nov 19, 2009 | 1994 Ford Thunderbird

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1990 K5 Blazer DIED(Electrical?)?


There may be no injector pulse if the computor does not see a RPM signal.
There will be no spark if the ignition module does not see a dist pulse from the dist pickup.......a RPM signal.
Because you do not have both ......I would suggest to check/change the dist pick up.
Follow the wires from the ignition module inside the dist to the pickup which is also inside the dist.
If it is just a bad dist pickup....keep all your old parts as good spares.
Also...is the dist turning? to provide a RPM signal?
You will have to remove the dist to change the pick-up.....mark your timing locations......"rotor position" and "dist body location"before removal.
A quick test before installing the "repaired dist" .....plug it in the the truck wiring and turn on the key....DO NOT CRANK THE ENGINE OR YOU WILL LOSE YOUR DIST ROTOR CORRECT POSITION......as you spin the dist by hand .....the injectors should spray.

Aug 23, 2009 | 1989 Chevrolet S-10 Blazer

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Have no fire to the coil


As Long As You Have No Spark, Or Fuel, Replace Ignition Module. In Might Be The Pick-Up In The Distributor, Which Means A Whole New Dist. You Can Get And Dist. With Module. Good Luck

May 02, 2009 | 1991 Chevrolet S-10

1 Answer

I have a 86 Mercury Marquis that I am working on helping someone out and I would like to know how the ignition module is changed.......it won't start.....i have replaced battery, ignition coil, cap and...


if the module is on the side of the distributer it takes a wrench made just for ford modules to remove 2 screws, if you need to replace the pickup in the dist. you have to remove the dist. out of the engine pull the gear off and pull the shaft out of the dist.

Jan 24, 2009 | 1986 Mercury Marquis

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