Question about 1991 Ford F150

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1991 F150 quit running

I have a 1991 F150 that just quit running. I have put on a new coil, distributor cap, rotor & module. I show voltage at the cap from the coil but not out of the cap to the plugs. Could it be the voltage is enough to show up on a meter but not strong enough to jump the gap from rotor to cap? I was told that the condenser has nothing to do with strength of the spark. Is this true?

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Ignition control module. Im a honda tech

Posted on Oct 19, 2012

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You need a new distributor. You've replaced everything else. A distributor will get up and running again.

Posted on Jan 02, 2009


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1975 f250 with 460 starts but won't run after releasing ignition.

check the voltage of the coil ( stamped on the bottom
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It turns over and fires on the start circuit as that is straight 12 volts but when you release the key to the run position it goes through a resistance wire or block to drop it to 7.5 volts or the coil will burn out
with the key in the run position connect a multimeter to the coil wire and read the voltage ( if it is not there you have not connected up the circuit properly
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I need answer for truck not firing. On. A 1991. SERRIA 1500 TRUCK 5.0 LITER

Several things can cause this problem, cracked distributor cap, old ignition rotor. Or if you have coil packs, cracked coil pack, ignition control module, crank position sensor, cam position sensor. Coil pack parts and sensors can be checked by autozone, cap and rotor will have corrosion on the rotor, however a small crack in the distributor cap can be next to impossible to see, replacement is usually best option.

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Have a 1993 f150 4x4 5.0 / 302 new coil new ignition module new distributer cap/ rotor wires and plugs not getting fire from the coil??? please help

Check pickup ring inside the distributor sounds like the wire is broken and make sure you have power going to ignition module. If you don't go to library and use their all-data services for test procedures for no spark condition. If you have power to ignition module i would say its the pick up coil in distributor. This system is a pretty reliable one. I have seen new modules that where bad so you might have yours tested by your local parts store most of them will test them for free or a small charge.
Good luck I hope this helps get you back running agian

Jul 03, 2011 | 1991 Ford F150

2 Answers

1984 F150 302 motor no sparck to the plugs. i replaced the following with new parts ( the brain-the distribtor-the coil-the ignition switch )what else is there that could cause no spark to the plugs has...

take the distributor cap off, and have somebody crank the engine while you watch the rotor, if the rotor isn't turning, then the distributor shaft is broken

Also, if you have not done so, replace distributor cap

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1 Answer

Cut off while driving replaced fuel relay switch, fuel pump wont cut off with switch plugged in, also no or intermittent fire at plugs replaced distributor and coil, ignition control module passed test at...

sounds like you have an electrical problem, get a diagnosis, and see if all your fuses and everything are all getting power, and if they are, then try replaceing the rotor on the distributor cap

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There are 3 possibilities. 1 the coil. 2 the ignition module. 3 the pick up coil. In my experience the ignition module is the most common cause. It is in the distributor held in with 2 screws. The coil and module can be tested at any parts house. Good Luck

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