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Extreme Veteran
Posts: 580
 
| On my 1958 Dodge Coronet 6cyl. Power-flite sometimes when I may be backing out of a parking spot and then put it in drive and go the transmission will not up shift.
When it happens most times I can stop and push all the buttons and take off again and it will shift right but today it happened and I couldn't get it to upshift.
Also when idling in neutral with the parking brake off and I rev the engine it lurches forward maybe an inch or two.
Would this be an indication of needing the cable adjusted, which I've yet to try, or something internal to the transmission?
I have the service manual for the adjustment procedure but searched and could find very little on the forum about doing it.
Any tips you could give would be appreciated.
Thanks, Ed.
Edited by local2Ed 2014-04-23 5:45 PM
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Expert
Posts: 3398
  
Location: Chestertown, NY ( near Lake George) | I do not believe this is an adjustment issue, also when revving the engine in neutral you may get slight creep especially when cold. Was the trans out, any work done on the push buttons or previous cable adjustment? |
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Expert 5K+
Posts: 8443
Location: Perth Australia | Are you sure it has the correct oil in it, if its a thicker oil, you can experiance both problems
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Extreme Veteran
Posts: 580
| I've owned it two years and I never had the trans out or attempted to adjust the cable. Don't know the history before me.
I forgot to mention that it used to happen more frequently before I cleaned and lubed the transmission selector on the dash.
This car sat outside for who knows how long before I bought it.
When I changed the trans fluid I used DexIII/Mercon.
Don't know if this has something to do with it but when I adjusted the bands per FSM, after the car was not driven/started in 6 weeks,the adjustment bolt inside the pan never reached the proper torque where you begin to back it out a certain amount of turns so I just set it back to where it was. What I'm saying is the screw turned all the way in until the socket would no longer seat on it with no click of my torque wrench. Prior to this I had never driven the car on the street to be able to tell if it did this before.
Went back out there this afternoon and the car shifted fine like it does 99% of the time.
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Expert
Posts: 3398
Location: Chestertown, NY ( near Lake George) | The reverse band should never have to be turned in that far, something is wrong there, probably worn, but usually reverse is not an issue. You have the right fluid in there, so no upshift may be a sticky governor. 72 in/lb and back out 3 turns, not ft/lbs, not suggesting you did it wrong, but I don't know what you did. ( reverse and kickdown are set almost the same way. |
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Extreme Veteran
Posts: 580
| Shep - 2014-04-24 2:52 PM
The reverse band should never have to be turned in that far, something is wrong there, probably worn, but usually reverse is not an issue. You have the right fluid in there, so no upshift may be a sticky governor. 72 in/lb and back out 3 turns, not ft/lbs, not suggesting you did it wrong, but I don't know what you did. ( reverse and kickdown are set almost the same way.
Yep, I used the in/lb. I've adjusted several different mopar transmissions and this was the first to do this to me.
I did read somewhere about a possible piece on dirt in the governor so I may check the cable adjustment and look into another shot at adjustment and also the governor.
The trans shifts perfect except for that glitch. During normal stop and go driving it always shifts correctly, it only happens when I back out of a parking spot and put it in drive. It doesn't happen all the time.
Thank you for the reply's. |
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Expert
Posts: 3398
Location: Chestertown, NY ( near Lake George) | Yeah, get that cable set with the neutral switch right in the middle of the tang on the valve body, when someone is holding it in neutral. could be the shift cable is stretched also. |
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Extreme Veteran
Posts: 580
| Just an update.
I re-adjusted both bands per FSM.
adjusted shifter cable per FSM. Adjustment was slightly off, very very little.
New Dexron/merconIII fluid.
Same problem shifting when trans has a chance to warm up and after car has been shut off and parked for a few minutes. (Like stopping to get fuel)
Sometimes if I keep the speed at 25~35 mph. the trans will eventually shift and then shift perfectly until I shut it off again.
I have tried several times now when I am stopped somewhere to leave the car in neutral with the parking brake on and leave it running and when I pull away the car will shift perfect.
It seems the problem is getting narrowed down to it happening when the trans is at operating temp and I turn the car off.
This make sense to anybody?
Thanks, Ed. |
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Expert
Posts: 3398
Location: Chestertown, NY ( near Lake George) | I would suspect a possible problem with either the governor or a sticking shift valve in the valve body. |
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1958 Dodge shift cable adjustment?
