1986 mustang 5.0 L

If there is no spark check the ignition module. Any car repair book, Chilton's or?? will have the instructions.

Al

When you turn on the ignition before starting the motor does the fuel pump prime? If you don't hear the fuel pump priming as you should always hear then it could be the EEC power relay. Any parts store that carries GP Sorensen parts should have part # MR14 which is the replacement for the EEC relay. If you can, though, buy an original Ford relay from the dealership.

Helmut Roner Beat Up 1988 Mustang GT

If the car really isnt getting spark then the most common cause of this is the TFI module (aka ignition module). I'm not 100% sure if its in the same place as the 87-93 mustangs. On the

87-93's its on the distributor. Its that gray piece of plastic with two bolts holding it to the distributor with plug going into it's side. To change it you need a special little wrench that any autoparts store should stock. Its obviously known as the Ford TFI module wrench. All you have to do is disconnect the wire going to the module. Then take out the two bolts holding it to the distributor with the new wrench you just bought and slide the module down to unseat three prongs that connect into the distributor itself. Don't pull the module straight off the distributor....slide it down! Then clean off all mating surfaces where the module and the distributor meet. The new module should come with a small pack of grease that you need to put on these mating surfaces (to keep them from corroding) and the three prongs on the top of the TFI module. Now all you have to do is install the new TFI module and you're on your way!!! One note, be very careful no to lose those little screws holding the module to the distributor because they are very tiny and disappear in the blink of an eye...LOL Hope that helps Mike MuscularMustangs.com

** To change it you need a special little wrench that any autoparts store ** should stock. Its obviously known as the Ford TFI module wrench.

This is also known as a Torx #10, which sits in most well-stocked toolboxes.

-JD

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True. If the EEC power relay is faulty then there will be no spark, either.

The cheaper alternative and just as easy is a ¼ inch drive, 7/32 deep socket.

Lot's of individuals have been through this. One thing that should have been addressed, but is often ignored is that the pick-up module on the inside of the distributor SHOULD be replaced a long with the TFI as these two parts work together. Sure, most have only replaced the TFI alone and have not had to deal with anything bad ever since, but it shouldn't be ignored. These give the same symptoms of a failing TFI when they start to go bad. The distributor shaft has to be disassembled to remove the pick-up module from the distributor.

I have the little bitty screwdriver one! StuK