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jdluna
New User
Nov 6, 2017, 4:10 PM
Post #1 of 6
(1500 views)
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truck won't turn over
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1994 Ford F150. Was running great. No problems starting at all. Parked it and now nothing happens when I turn on to start. No clicks nothing. I put a new solenoid on, a new battery, I switched around all of the black cubes in the fuse box. I tried putting a wrench to both posts of the solenoid while a friend turned on the start. Any further suggestions?
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Discretesignals
Ultimate Carjunky
/ Moderator
Nov 7, 2017, 10:36 AM
Post #2 of 6
(1455 views)
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Re: truck won't turn over
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Does the starter solenoid clack when you attempt to crank the engine?
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Nov 9, 2017, 8:39 AM
Post #4 of 6
(1411 views)
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Re: truck won't turn over
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General on this: Solenoid on fender well the first heavy gauge wire goes to battery pos. That jumped to the trigger pose (small gauge one) would trigger solenoid you said was new. It is a magnet connection requires enough amps to pull in that it may not have if nothing happens then you check all battery cable connection - both at both ends don't forget engine block. Not just looks clean them up - wire brush or if bad enough new ones.
If enough at the trigger post of solenoid from battery known charged and good it will at least "click" a one hard click or flutter is low amps delivered still. If working sends along full amps that came in on to starter motor in turn throws out starter drive gear to flywheel.
Which one of those is under spec now if that doesn't work then you test away maybe first with a test light then DVOM for voltage drops up to declaring starter usually brushes with time or a fault give up a tap on it with hammer sometimes works. If so toss that starter.
Sequence of what makes it where. Right now you may not be jumping the right smaller post at solenoid with power? This would work on a workbench without a vehicle at all send power along. May not end the trouble but isolate where the problem is hard is a new failed solenoid but you can test it,
T
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jdluna
New User
Nov 9, 2017, 8:45 AM
Post #5 of 6
(1407 views)
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Re: truck won't turn over
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Is this something I can try alone or do I have to have a second person to turn the ignition to start when I try the solenoid?
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Nov 9, 2017, 1:29 PM
Post #6 of 6
(1400 views)
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Re: truck won't turn over
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I can't know your skills or tools available. Yes this is doable and not rocket science but if you don't understand it then it think it thru.
Don't be cleaning up battery cables or battery top post (on this) without first disconnecting negative battery cable at battery. It comes off first and back on last when disconnecting it for any reason is indicated.
Then you can at least clean that - I suspect troubles with connections common if you don't do something to them periodically! Nobody does - they wait for a surprise just like what's happening to you.
Know some basics: The starter is the largest draw on a battery it will normally have so uses the largest gauge wire and solenoid is the "remote" switch if you will for your key to make that connection. It does require enough amps WHEN it gets triggered by lower gauge wire to the smaller post at the request from your key you know something is going on. That's the smaller post with a typo looking back (sorry) that if you give that 12v power and just enough it pulls a plunger against a spring making the connection on to the starter. No noise at all suggests a total loss of power to that either from key or when you purposely add power using a jumper wire just quickly should make starter engage. If nothing with that there's a total disconnect of power still or that solenoid is no good rare for that BTW.
Just start with cleaning things up and let's get it to at least click. Again - you are adding power that should make at least a click. One hard click starter is drawing way too much current to turn and if it flutters that plunger against the spring there isn't enough power (amps) getting thru the loop. Loop: I mean all power from battery leaves and must return to is and can only be as good as the weakest spot - got that?
Yes this crap happens by surprise. The common no noise problem if the small wire does get any power is connections totally give up, all power lost to everything, clock resets, radio stations lost and so on for this era. If with an alarm or other stuff it will think it's being stolen too so know how to set stuff if not that alone depending on how done can be the whole issue. Sorry for the novel but it's hard to make a tech out of everyone with a problem that takes years of experience just can't be a "Tweet" if you will,
T
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