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jefflord
Samba Member
Joined: August 09, 2006
Posts: 224
Location: Byron, Ga.
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 Posted: Tue Dec 06, 2011 1:25 pm Post subject: 1981 Ford F100 starting issues |
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Okay I know this is a Vw forum but I have gotten so much help in the past with my bugs that I thought I would throw this one out there. On top of driving 40 year old cars my work truck is 30 years old. I started with what I thought was solenoid problem and it seems to continue. I have replaced the solenoid (twice) had the starter rebuilt, battery is good and alternator is charging. The truck will crank fine for several days then all of a sudden when I try and start it the battery drags like it is dead. If I play with it long enough it will finally turn over and start. One time though it never did start and that is when all the other parts were replaced and checked. Any advise would be greatly appreciated.
Thanks,
Jeff 
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60ragtop
Bonneville Belt Bitch
Joined: March 13, 2006
Posts: 7801
Location: Big Wonderful WYO 82401
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| Posted: Tue Dec 06, 2011 1:44 pm Post subject: |
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you need to put a meter on it when it is dragging and see what it reads.
Battery cables? Bad cell in battery, bad starter. Have you load tested the battery? Check voltage going to solenoid and coming out
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Rick
Certified Mechanic by the State of Michigan in 1977
ASA certified in 1987
Certified Hunter Wheel Alignment Master Technician 1986
| tasb wrote: |
I've restored a large number too, but I don't toot my horn quite as loud.
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| sb001 wrote: |
maybe he just snapped cause his car sucked  |
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jefflord
Samba Member
Joined: August 09, 2006
Posts: 224
Location: Byron, Ga.
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| Posted: Tue Dec 06, 2011 3:02 pm Post subject: |
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The only thing that has not been done is testing it when it is dragging. Never had a meter with me, but I do now  All the other test came up fine.
Thanks,
Jeff
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Tram
Samba Socialist
Joined: May 02, 2003
Posts: 23022
Location: Northwest of Normal
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| Posted: Tue Dec 06, 2011 3:17 pm Post subject: |
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Flooding and hydro locking, or timing too advanced.
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Немає виправдання для війни! Я з Україною.
| Bryan67 wrote: |
| Just my hands. And a little lube. No tools. |
Those who can- do.
Those who can't? Subaru. |
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bugger101
Samba Member
Joined: September 04, 2010
Posts: 1558
Location: orlando
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jefflord
Samba Member
Joined: August 09, 2006
Posts: 224
Location: Byron, Ga.
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| Posted: Wed Dec 07, 2011 2:14 pm Post subject: |
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12.56  Starting to think it might be the timing issue. just strange that it doesn't do it all the time.
Very puzzled,
Jeff
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minger
Samba Member
Joined: November 03, 2003
Posts: 238
Location: Cleveland Ohio
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| Posted: Wed Dec 07, 2011 5:21 pm Post subject: |
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| Ignition swtich? |
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modok
Samba Member
Joined: October 30, 2009
Posts: 27728
Location: Colorado Springs
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| Posted: Wed Dec 07, 2011 7:23 pm Post subject: |
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I found a problem with some ford starters, the ones that use a relay under the hood and some kinda mechanical switch thing on the starter. ( i don't know what ford calls it)
The bendix and gear wore into the housing, so the gear was going out too far and jamming into the teeth of the flywheel and damaging the starter too.
I went to the autoparts store and got a rebuilt starter, it had the same problem, so i took it apart and put a big washer on the end to make up for the wear
It worked fine after that |
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johnnypan
Samba Member
Joined: October 24, 2007
Posts: 7431
Location: sackamenna
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| Posted: Wed Dec 07, 2011 8:02 pm Post subject: |
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| Check the ground strap between the engine and frame. |
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jefflord
Samba Member
Joined: August 09, 2006
Posts: 224
Location: Byron, Ga.
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| Posted: Thu Dec 08, 2011 4:52 am Post subject: |
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Okay, will check the ground strap today. Just wish it wasn't so flipping cold 
Thanks,
Jee
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jefflord
Samba Member
Joined: August 09, 2006
Posts: 224
Location: Byron, Ga.
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| Posted: Sat Dec 17, 2011 7:30 pm Post subject: |
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Latest on my F100. Many hours and several mechanics later. Turns out the fly wheel is warped. The fly wheel would be in a bind, starter would engauge but couldn't turn it past the spot it was binding in. This would cause the starter to pull too many amps and fuse the plates in the solenoid. This problem would happen randomly because it just depended where the warped spot in the fly wheel stopped when the truck was parked.
Thanks for all the input, no one on the ford forums ever responded  A lot more friendly people on this site !
Jeff Lord
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busdaddy
Samba Member
Joined: February 12, 2004
Posts: 53067
Location: Surrey B.C. Canada, but thinking of Ukraine
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| Posted: Sat Dec 17, 2011 7:42 pm Post subject: |
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| jefflord wrote: |
| no one on the ford forums ever responded |
BTDT with many other non VW forums, makes me appreciate the Samba and VW people more every day. Good to hear you got it beat even though it still sounds like work.
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Please don't PM technical questions, ask your problem in public so everyone can play along. If you think it's too stupid post it here
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