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Old 07-01-2011, 09:29   #1 (permalink)
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F150 crank no start issue

94 F150 5.0L dual tank p/u cranks but won't start. Checked for spark and have that. I checked the schrader valve and gas is present at the injectors. Battery is good as is the dizzy and rotor. It just cranks but never turns over. I had tapped the TFI (on fender) and my helper was just moving wires around under the column and either he or I did something to make it seem like it was going to turn over but it never did. I'm leaning towards the TFI being bad because everything needed is there (fuel, spark and compression). Maybe the ignition module underneath the steering column; would that cause a no start issue? plugs and wires are good. any help would be appreciated. thanks
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Old 07-01-2011, 20:03   #2 (permalink)
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Re: F150 crank no start issue

update f150 crank no start issue: 94 ford F150 2wd p/u 5.0L dual tank...cranks but won't turn over. have replaced the ignition control module (TFI) and the distributor cap as well as the rotor button. Got a good spark to a plug when tested on the block, have adequate fuel at the schrader valve and the battery is good. It seems like it wants to start and usually will crank around 3-5 times before it acts if it is going to fire then it falls back into the pattern of simply cranking. The only thing I now can come up with as possibly being the problem is that it jumped time. How would I check the timing and if needed adjust it to the proper order? thanks.
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Old 07-26-2011, 13:52   #3 (permalink)
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Re: F150 crank no start issue

Year please.
IF it's one of the gazillions still on the road from mid '70-ish to late 90s-ish, you can BET THE RANCH that you have a mechanical failure INDIDE your steering wheel hub.

It'll be a broken pot-metal part, roughly shaped like a horseshoe - with the open end down.

That broken linkage fails to engage, via a pushrod, the ACTUAL ignition switch, which lies atop and centered above your steering column.

To test:

When you turn your ignition to the "on" position, your collection of dash-mounted "preflight check" lights come on, right? Look VERY closely (You might have to cup your hand to block out light.) for that tiny red "seatbelt warning" will NOT be on. Keep watching that "seatbelt" spot as you turn the key key to "start"............then turn it HARDER and "*dink*.
THERE'S that light! And darned if your truck doesn't start right up.

IF you own a Dremel tool and have no fear of using it, you can probably affect the repair yourself. You'll have to do a little judicious grinding away to make a new one fit without ABSOLUTELY "PERFECTING" your blue language skillset.

The solution:

NAPA stocks that part in my small (population 15k) town, and sold me one just a very few years ago for a whopping ten bucks.

Protip: Do NOT......discard your damaged "horseshoe" until AFTER you get your new one in and is CONFIRMED to work reliably. It won't hurt to have it in your pocket when you walk in to your favorite auto parts supplier.

Good luck. It ain't a HARD fix, but it IS kinda tedious. Beer served nicely as my helper.

geezer/geek/old fart-who-lives-in-a-cave-in-the-middle-of-a-central-Illinois-cornfield- Jimmj43
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Old 08-31-2011, 20:34   #4 (permalink)
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Re: F150 crank no start issue

could be the cause of no start is in the distributor or in the ignition module...
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