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Nothing in drive
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   Forward Look Technical Discussions -> Transmission and Rear AxleMessage format
 
b5rt
Posted 2017-02-22 8:31 PM (#534543)
Subject: Nothing in drive



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Location: central Illinois
Rebuilt transmission and new gear selector cable. I installed and adjusted cable according to the FSM. Fluid is at proper level.

R button engages reverse
N button puts transmission in neutral
D button does nothing until engaging 1 or 2
2 and 1 buttons engage in forward gear

This is a fresh restoration and I haven't driven the car except to turn around in driveway. It won't engage forward gears in drive until I select either 2 or 1.

I'm thinking it's a cable adjustment. Would I need to spin the locking wheel in or out to get it to engage gear in drive? Or have I got a different issue? This is the first push button transmission I've dealt with.
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Shep
Posted 2017-02-22 9:05 PM (#534545 - in reply to #534543)
Subject: Re: Nothing in drive



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Location: Chestertown, NY ( near Lake George)
Get an applicable shop manual and the procedure is clearly outlined. I would agree the cables slightly out of adjustment, doesn't take much to cause this, when you drive it in 2 cnd, does it shift properly?

Edited by Shep 2017-02-22 9:08 PM
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Old Transmission Man
Posted 2017-03-02 12:58 PM (#535021 - in reply to #534543)
Subject: Re: Nothing in drive


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Posts: 1

I am brand new to this site, having stumbled upon it. I see your question but am not certain what vehicle you are discussing. Since I see you have Mopar's and are discussing a locking wheel I'm going with the 1960 DeSoto. I would highly recommend giving as much info as possible such as transmission model, engine size, etc. If the cable is adjusted properly, and the fact Reverse and the other gears seem to work it could be, it sounds like a sprag (one way clutch) put in wrong. Again just shooting in the dark here. Hope this helps.
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finsruskw
Posted 2017-03-02 5:05 PM (#535030 - in reply to #535021)
Subject: Re: Nothing in drive



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Location: Eastern Iowa
I think you need to start from scratch and do the complete adjustment procedure as printed in the FSM that pertains to your car.
for example, the 300-F set-up is quite involved as you might imagine w/2 carbs operated via a bell crank. It is a PITA for sure.

I believe you start on the engine end with everything loose. Then the 1st step involves correctly positioning the mount on the firewall in relation to the main carb rod and go from there. IIRC it has to do w/a short 3/16" rod inserted through slots in the mount to hold it in position while you get the correct floor to acc pedal measurement in degrees. and tighten the carb rod.

Good luck!
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57chizler
Posted 2017-03-02 5:58 PM (#535039 - in reply to #535021)
Subject: Re: Nothing in drive



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Old Transmission Man - 2017-03-02 9:58 AM

it sounds like a sprag (one way clutch) put in wrong.


That was my first thought too but pushing the 2 button gives forward drive and 2 would still take off the same as in Drive (and Drive doesn't work). More likely cable adjustment or shifter malfunction.

BTW, welcome to the board.
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b5rt
Posted 2017-04-23 5:34 PM (#538698 - in reply to #534543)
Subject: Re: Nothing in drive



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Location: central Illinois
Finally got time to get under it and start from scratch. The cable adjustment was right on so I moved to the adjustment of the rods. Put the 3/16 rod in and adjust the rod to the transmission which was correct too. Then went to the carb rod which is where I had made my mistake... I believe I had left the rod in place when making this adjustment the first time.

All is well and it now engages the transmission in Drive as well as Reverse.

Thanks for the input.
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57chizler
Posted 2017-04-24 2:35 PM (#538768 - in reply to #538698)
Subject: Re: Nothing in drive



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Location: NorCal

Confusing. The mechanical (TP) linkage has nothing to do with the transmission going into gear or not.
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b5rt
Posted 2018-07-08 2:27 PM (#566284 - in reply to #534543)
Subject: Re: Nothing in drive



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Location: central Illinois
A few months later and I've got a seat in it and brakes that work. Time for a road test.

Reverse is engaged, then neutral, into drive and out the driveway. Went down the street and it stays in low gear and won't upshift. Went back and rechecked my linkage which I believe is correct. Looked up the cable adjustment in my FSM and all seems right.

I've read several times where guys on here state that the only way to know for sure if the cable is adjusted right is to pull the pan and have a look. I went with pictures that Phil the Frenchie shared and mine does exactly what he describes. The ball fully engages each position.. R,N,D,2,1. So my cable adjustment is correct.... but I still have no upshift.

The transmission was rebuilt by the best shop in town and I've never had an issue with the 904 and several 727's I've had them rebuild.

Any ideas on what to do next? My new pan gasket won't be in for a couple days so I'm trying to narrow down the possibilities before I end up having to take the car to the transmission shop.
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57chizler
Posted 2018-07-08 3:22 PM (#566291 - in reply to #566284)
Subject: Re: Nothing in drive



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What speed did you achieve on the test drive? You might try running up to a higher road speed in Drive, then throttle back to an idle to see if it will eventually upshift.

If not, first thing to do is disconnect the linkage at the trans lever and allow the lever to come full forward. If it upshifts with the linkage disconnected, linkage is the problem.

If it still won't upshift, the problem is likely in the governor or valve body. There is a governor pressure test port on the right rear side of the trans, a test gauge connected there will show if the governor pressure is correct; the FSM shows the correct pressures for a given road speed.
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b5rt
Posted 2018-07-08 5:22 PM (#566296 - in reply to #566291)
Subject: Re: Nothing in drive



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Location: central Illinois
I did run it up to about 30 mph and with a tiny temporary glasspack it was plenty loud for my neighborhood. If you think I should try some short blasts I can try that when I get it back together.

After that, I will try the trans lever disconnect and see if it upshifts. If it does, should I expect it to downshift with the lever not connected?

I live about 1.5 miles from the trans shop. I'm guessing it will be safe to drive, with the lever reconnected, to the shop if need be. I'd keep the speed below 20 mph.

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ttotired
Posted 2018-07-08 6:34 PM (#566302 - in reply to #534543)
Subject: Re: Nothing in drive



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Give it to the trans shop.

But I would also try it with the kickdown linkage disconnected. It will take of and be in top gear quickly if that's the issue

It will change up and down but not into 1st (from memory) and obviously no kick down

If the problem is internal, then let your tans guy fix it because if its something they did and you mess with it, it gives them a legitimate escape

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b5rt
Posted 2018-07-08 8:05 PM (#566307 - in reply to #566302)
Subject: Re: Nothing in drive



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Location: central Illinois
I don't plan on going into it for that reason, if it's something they did wrong the pressure gauge should show it like chizler said.

My issue with driving it to the shop would be that I remember something about Mopar transmissions have to have the kickdown hooked up or you risk burning it up. If it quickly goes to high gear that would be ideal for engine operation, just wondering what it does to the clutches.
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57chizler
Posted 2018-07-09 12:58 PM (#566346 - in reply to #566307)
Subject: Re: Nothing in drive



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Location: NorCal
The trans will upshift and downshift with the linkage disconnected. Driving short distances at light throttle with the linkage off won't hurt the trans, it's long distances and/or hard throttling without linkage that will kill the trans.
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b5rt
Posted 2018-07-11 8:23 PM (#566488 - in reply to #534543)
Subject: Re: Nothing in drive



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Location: central Illinois
Finally got my new gasket after Speedy Delivery took it 150 miles in the wrong direction. Filled it with fluid and disconnected the transmission lever. It's still is stuck in low gear. It will be next week before I have a chance to talk to the transmission shop owner.

On the other hand I got thumbs up from 2 neighbors while blasting down the street.
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