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Old 03-01-2012, 08:52 PM
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No spark

My 1984 f150,4.9 was running smooth down the road yesterday and then just suddenly shut off. Like toe tag dead. Thought maybe clogged fuel filter so replaced them all. No joy. Replaced dist cap, rotor, and even the coil. Still no spark. Engine turns great, fuel is flowing, just no spark... Any ideas.. Thanks
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Old 03-01-2012, 09:58 PM
Harte3 Harte3 is offline
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Ignition module quit.
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Old 03-01-2012, 11:59 PM
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Quote:
Originally Posted by Harte3 View Post
Ignition module quit.
X2 on that.
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Old 03-02-2012, 11:11 AM
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Check to see if the rotor is still turning when you crank it over.
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Old 03-02-2012, 11:30 AM
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thanks for the info. I'll check for rotor rotation and then check the ignition module. I guess the ignition module would be cheaper than distro...
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Old 03-02-2012, 11:38 AM
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Dist. is only about $45 exchange.
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Old 03-02-2012, 01:46 PM
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You can pull the ignition module out and take it down to a parts store. They can check them for free.
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Old 03-02-2012, 02:22 PM
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Your choice, buy parts and maybe fix it or troubleshoot it. I'd verify you are getting voltage to coil in start and run position first.
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Old 03-02-2012, 07:43 PM
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Yep, Ignition Module was the problem. It pays to trouble shoot. Replaced rotor, coil, distro cap and even before all that...fuel filters... I would advise any rookies to old ford trucks ,like me, that the Ignition Module is fairly cheap... 20.00$ or so at O reilley's... BUT while your in there go ahead and get the "special tool" to get the damn thing off. It is basically a 7/32 deep socket that is specially made to reach inside the deep holes holding the module on. No, all standard SAE sockets will not work because they are too fat to fit inside the deep holes. From there I would advise connecting the bottom front bolt first (the one closest to the radiator) and then the rear top bolt last.
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Old 03-03-2012, 12:04 AM
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Kind of thought that's what it was. And at the price I started carrying a spare. Just a false sense of security for me. Glad you got it running again.
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Old 03-03-2012, 06:04 AM
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That is one dirty engine. It gets a good washing today before I have to work on something else.
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  #12  
Old 03-07-2012, 07:25 PM
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http://i1262.photobucket.com/albums/...an1721/ICM.jpg

Mr. Lurch; I tried to send these to you but had no luck.
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Old 03-07-2012, 07:29 PM
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http://i1262.photobucket.com/albums/...721/DISTRO.jpg
And this one...Hope it helps.
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Old 07-17-2012, 04:57 PM
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I just had the same problem as described above with my 93 econoline. I didn't buy a ton of parts to start replacing though.... I pulled the distributor and the rotor is not turning. Being new to ford I thought timing chain, O CRAP! But the more I read and investigate I guess these model engines do not have timing chains.... Anyone ever seen this before and also I can not turn the rotor by hand either. Please help....
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Old 07-17-2012, 05:40 PM
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Quote:
Originally Posted by derr_eng View Post
I just had the same problem as described above with my 93 econoline. I didn't buy a ton of parts to start replacing though.... I pulled the distributor and the rotor is not turning. Being new to ford I thought timing chain, O CRAP! But the more I read and investigate I guess these model engines do not have timing chains.... Anyone ever seen this before and also I can not turn the rotor by hand either. Please help....
Just to be clear, you pulled the distributor CAP and the rotor did not go round and round when you cranked it over... correct??

When this happened to me I could turn the rotor very easy by hand. You will still need to remove the distributor and look closely at the roll pin/shear pin on the Distributor gear to see what is going on.

Be carefull, my distributor gear is still in the bottom of the oil pan.
Jim
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Old 07-17-2012, 05:40 PM
 
 
 
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