1969 Ford F250 Slipping into Drive and reverse

1969 FORD F-250
10,000 MILES • V8 • 2WD • AUTOMATIC
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THEBLUESMAN
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Good day,

My old truck has been sitting for around one year without being used. I start it to move it around our small yard to cut the grass etc. When I started it recently, after sitting for a few months, I let it warm up, then put it into drive. The truck went nowhere for a moment, shook, then slowly started to move. The same happens in reverse. It will shake while backing up. I thought it might be like my old 79 Ironhead, and maybe the clutches etc where stuck together due to not moving. I tried going forward and reverse in the driveway to see if that loosen anything, but it doesn't. I noticed that if I turn it off, then start it warm, it works ok a few times, then starts again. The truck is not insured for the road, so I can't, and don't want to at this point, drive it on the road to see what happens. I would like to put it back on the road, but not sure what to do at this point. BTW the truck worked fine the last time I parked it before leaving it for the year.
Nov 12, 2008 at 5:49 PM
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JNOVACK
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sounds like the cluches are sticking when was the last time trans has benn worked on
Nov 12, 2008 at 8:24 PM
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THEBLUESMAN
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It has been a few years. Like I said, It worked fine before I took it off the road. Should I service the transmission, do you think that should loosen it up? I heard that is sometimes a bad thing to do because of friction loss....any suggestions besides taken it to a mechanic.
Nov 13, 2008 at 3:47 PM
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JNOVACK
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you can try that but I am thinking the cluches are stuck together or maybe one of the pumps is not working
Nov 13, 2008 at 6:10 PM
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THEBLUESMAN
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Ok, well, should I do a flush, and how do I check if the pumps are working? Is it a costly this to be fixed?
Nov 14, 2008 at 5:10 PM
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JNOVACK
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do you have an aanco near you they can do the test on the pumps I think this month they are having a sale on insections you may want to check there site as for the cost it depends on your location here in Illinois it is $50-$75
Nov 14, 2008 at 7:57 PM