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1992 Ford Ranger


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shannon
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May 9, 2012, 3:41 AM

Post #1 of 10 (2910 views)
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My truck is a four cylinder the problem started when I was driving down the road and everything was fine when out of the blue it would start running bad, no power, rough idle, then it would start running good again all by itself. I had the fuel filter changed and the problem still occurred. What do you think could be the problem?


Hammer Time
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May 9, 2012, 7:52 AM

Post #2 of 10 (2855 views)
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Re: 1992 Ford Ranger [In reply to] Sign In

Is your check engine light ever coming on?



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shannon
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May 11, 2012, 4:50 PM

Post #3 of 10 (2811 views)
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yes since i asked the ? i put a coil pack on it and vit ran ok for about 20 minutes then right back to running on 3 cylinders the front cylinder is the on not getting fire


Hammer Time
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May 11, 2012, 5:47 PM

Post #4 of 10 (2807 views)
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I've seen a number of ignition control modules cause that on that particular engine. One half of it burns out.



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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.



Discretesignals
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May 11, 2012, 7:34 PM

Post #5 of 10 (2802 views)
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Also check your plug wires and your terminals inside the plug boots. Bad connection or high resistance in the plug wires can cause the secondary voltage to go really high. The voltage is going to try and find it's way to ground and will burn holes through ignition coil housing looking for it.





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shannon
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May 12, 2012, 3:55 PM

Post #6 of 10 (2784 views)
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i checked all that and it seemed to be pretty good my friend works at a junkyard and he brought me a computer brain and it was firing on all four cylinders then about a mile down the road it started the same thing front piston no longer getting spark i was wondering if there could be a wiring short some-wheres or something burning out the computer


Discretesignals
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May 12, 2012, 4:08 PM

Post #7 of 10 (2781 views)
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You'll need an EEC IV code reader to see if there are any trouble codes stored. Might be an ignition control module code stored in there.

This one has eight spark plugs and 4 coils housed in two seperate coil packs. The ignition control module as HT stated controls 4 coils separately and gets it's input from the crank sensor. If you have no spark on the intake or exhaust side on #4 coils, that could mean you have a problem with the ignition control module or a wiring problem on that coil circuit. I'd be suspecting a ignition control module also as HT stated if your wiring looks good.





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.

(This post was edited by Discretesignals on May 12, 2012, 4:13 PM)


shannon
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May 12, 2012, 11:39 PM

Post #8 of 10 (2768 views)
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Re: 1992 Ford Ranger [In reply to] Sign In

what is an ignition control module


Tom Greenleaf
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May 13, 2012, 3:40 AM

Post #9 of 10 (2760 views)
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Should look like this.......



Location - Under hood, driver side, lower engine area, mounted on intake manifold assembly.

Not real sure but this could pick on one cylinder but possible. Not so sure why some parts already done just lasted a short while either?

T
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Long retired now


Hammer Time
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May 13, 2012, 8:03 AM

Post #10 of 10 (2753 views)
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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.





1992 Ford Ranger


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