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Joined: Feb 2014
Posts: 4
Grease Monkey
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OP
Grease Monkey
Joined: Feb 2014
Posts: 4 |
hi everyone quick question when driving my 48 fleetmaster 1st gear no problem when in 2nd gear going good and i let off the gas my shifter jumps going into 3rd doing ok then pops out checked ALL mounts and they seem good any idea what can cause this and how can i fix it it is an open drive by the way i bought it like this,, thank you in advance
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Joined: Apr 2008
Posts: 1,194
ChatMaster - 1,000
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ChatMaster - 1,000
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What engine and transmission are in your car?
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Joined: Jan 2002
Posts: 30,700 Likes: 141
ChatMaster - 25,000
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ChatMaster - 25,000
Joined: Jan 2002
Posts: 30,700 Likes: 141 |
Is the vacuum assist shift hooked up or does it have a conversion kit?
Gene Schneider
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Joined: Feb 2014
Posts: 4
Grease Monkey
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Grease Monkey
Joined: Feb 2014
Posts: 4 |
235 i believe a 54 and the tranny just a 3 speed colum no vacume
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Joined: Jan 2002
Posts: 1,069 Likes: 9
ChatMaster - 1,000
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ChatMaster - 1,000
Joined: Jan 2002
Posts: 1,069 Likes: 9 |
If it is an open driveshaft, it isn't a 54 transmission. Need to get the casting numbers off of the trans. Also get the stamped numbers off of the block behind the distributor to pin point what engine you have. With the transmission changed out it could be a linkage or lever problem.
1946 Chevy 3100 1/2 Ton Pickup Purchased 11/18/17 Sold 9/20 1948 Chevy Fleetmaster Coupe, Purchased 6/20/2010 1965 Chevy ll 350 Purchased Feb 2021. 3-speed Saginaw Hurst Floor Shifter 3.08 Rear End
2019 Ford Ranger Lariat Super Crew
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Joined: Feb 2014
Posts: 4
Grease Monkey
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Grease Monkey
Joined: Feb 2014
Posts: 4 |
ok heres what i found out casting on the engine has con3 H224 the tranny i believe is a truck tranny huge bell housing long shaft rearend is out of an 76 regal also i did take a good look at the motor mount the rubber look thrashed bunch of little cracks but dont jump the gun yet and say that it,,, because wouldnt it jump around in all gears???? one more thing the engine my buddy says it might be from a 1964 because of the water pump but they did not make 235 in 64 i say its a 54
Last edited by bubbas48; 02/12/14 11:29 PM.
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Joined: Feb 2011
Posts: 3,136
ChatMaster - 3,000
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ChatMaster - 3,000
Joined: Feb 2011
Posts: 3,136 |
What engine and transmission are in your car? Thinking back on an old post on this subject, and although it was directed at 216's with stock transmissions "popping" out of 3rd...Wasn't one solution was to add a "shim" between the bottom of the transmission and the bell housing...?
1947 Fleetmaster Sport Coupe VCCA # 47475
If it's not wearing a Bowtie...It's not properly dressed...!
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Joined: Feb 2014
Posts: 4
Grease Monkey
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Grease Monkey
Joined: Feb 2014
Posts: 4 |
ok heres an update on my tranny,,, i know its been awhile was working on other things,, ok changed out the tranny mount checked every nut and bolt, motor mounts, everyrthing looks great,,, solid!!! did it change anything??? not a damm thing i went on a cruise to see how it was going to do and yeah nothing changed,, i just dont know where to go from here a friend says it has to be the tranny something about some dogs inside might be worn might have to rebuild it i did forget to get the numbers off the tranny,, the motor is H224 july 22nd 1954
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Joined: Mar 2009
Posts: 885
ChatMaster - 750
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ChatMaster - 750
Joined: Mar 2009
Posts: 885 |
Just a humble opinion here, but if it is linkage adjustment problem and you don't have the vacuum shift, I posted my idea in the 46-48 forum on 9-12-13 post #289114. Perhaps it may help??? If not, perhaps your phone # via PM and I can call you to see if I can help. Sometimes a talk on phone is better than a post.
Best to ya.
Jim.
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Joined: Feb 2002
Posts: 619
Oil Can Mechanic
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Oil Can Mechanic
Joined: Feb 2002
Posts: 619 |
I have a similar problem when cruising long distances over a 100 miles or so on the highway. Everything going along smoothly the suddenly she will pop out of gear. Never does it while driving in the city just on the highway and only after driving for about an hour or more. MY FIX WAS A BUNGY CORD from the shifter to the bottom of the seat. cheapest accessory I ever purchased. I call it my anti-slip device!!
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Joined: May 2002
Posts: 3,578
ChatMaster - 3,000
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ChatMaster - 3,000
Joined: May 2002
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i just did a full adjustment to my vacumm assist and shifting linkage etc.I followed the shop manual to a T but the 48 still falls to neutral when coasting ?
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