1940plymouth Posted October 19, 2013 Report Share Posted October 19, 2013 I was out and about in my Plymouth today, parked on an incline, not too steep, shut the car off in first gear without the e-brake on. The car would roll some, stop, roll some, stop. Any ideas what I should be looking for in the tranny this winter? Thanks, Bob Quote Link to comment Share on other sites More sharing options...
Dodgeb4ya Posted October 19, 2013 Report Share Posted October 19, 2013 A working E-brake on the back of the transmission Quote Link to comment Share on other sites More sharing options...
Don Coatney Posted October 19, 2013 Report Share Posted October 19, 2013 I would do a compression check on the engine. Quote Link to comment Share on other sites More sharing options...
Young Ed Posted October 19, 2013 Report Share Posted October 19, 2013 I would do a compression check on the engine. Agreed. Also are you sure you were in first? My dakota will do this in third on a moderately steep incline. Quote Link to comment Share on other sites More sharing options...
55 Fargo Posted October 19, 2013 Report Share Posted October 19, 2013 Put it in reverse on forward incline, and 1st gear on rearward incline, and forget about it. Compression test, not a bad idea, at least it will tell you where your at now, with this engine.. If all is running well, and you can remember to use the ebrake, any reason to really worry. I have a 3 speed Mopar trans if you need 1 Bob, even has the back-up light switch built into it, at least I think thats what that is..... Quote Link to comment Share on other sites More sharing options...
Don Coatney Posted October 19, 2013 Report Share Posted October 19, 2013 Actually reverse (being the lowest gear ratio) works best on both an incline or a decline. Quote Link to comment Share on other sites More sharing options...
hendo0601 Posted October 19, 2013 Report Share Posted October 19, 2013 First thing I would do is check out the internals of the parking brake and make sure they are working correctly. It sounds to me as though they are not working correctly if your vehicle still rolls with it engaged. I had a 63 belvedere with a /6 and a pushbutton auto with the parking brake on the tailshaft and it would roll a bit even with the parking brake engaged. I took it apart and the friction material had come apart on one of the "shoes" so only half of the parking brake was working, thus allowing it to roll. Quote Link to comment Share on other sites More sharing options...
Don Coatney Posted October 19, 2013 Report Share Posted October 19, 2013 I was out and about in my Plymouth today, parked on an incline, not too steep, shut the car off in first gear without the e-brake on. The car would roll some, stop, roll some, stop. Any ideas what I should be looking for in the tranny this winter? Thanks, Bob In order for the emergency brake to work it must first be engaged. 1 Quote Link to comment Share on other sites More sharing options...
hendo0601 Posted October 19, 2013 Report Share Posted October 19, 2013 I just now saw that he said "without" so yeah....there is your problem. Fix the parking brake and you are in business. Quote Link to comment Share on other sites More sharing options...
Don Coatney Posted October 19, 2013 Report Share Posted October 19, 2013 I dont believe he said the parking brake did not work. He said it was not engaged. Quote Link to comment Share on other sites More sharing options...
greg g Posted October 19, 2013 Report Share Posted October 19, 2013 clutch slipping? Quote Link to comment Share on other sites More sharing options...
1940plymouth Posted October 19, 2013 Author Report Share Posted October 19, 2013 e-brake works fine, just didn't use it. I was in first gear. New Clutch this Spring, but I suppose it could be a problem, Compression, I am sure that is a problem, but will check these all out once the weather says no more driving. Thanks everyone for the replies, they are greatly appreciated Quote Link to comment Share on other sites More sharing options...
Adam H P15 D30 Posted October 20, 2013 Report Share Posted October 20, 2013 Actually reverse (being the lowest gear ratio) works best on both an incline or a decline. I am not sure on the actual Plym 3 speed but first gear is the lowest ratio on most transmissions. Even with the best compression it will bleed down, turn the engine until the next compression stroke comes up then that will bleed down............ That's why the car would move a little then stop and so on. Quote Link to comment Share on other sites More sharing options...
Young Ed Posted October 20, 2013 Report Share Posted October 20, 2013 I am not sure on the actual Plym 3 speed but first gear is the lowest ratio on most transmissions. Even with the best compression it will bleed down, turn the engine until the next compression stroke comes up then that will bleed down............ That's why the car would move a little then stop and so on. I don't agree. In a healthy engine the compression will hold the car in place. Quote Link to comment Share on other sites More sharing options...
greg g Posted October 20, 2013 Report Share Posted October 20, 2013 Perhaps the car is doing a self diagnostic leak down test. Compression readings would shed some light on the subject. Remember in that situation you are depending one the compression of one cylinder, and I believe Bob said he put an earlier than model year engine in a while back. So even new it would be working on only 6.7 to 1 squeeze. Guess that why the good folks at Chrysler corp put the parking brake in. Quote Link to comment Share on other sites More sharing options...
Dodgeb4ya Posted October 20, 2013 Report Share Posted October 20, 2013 Lucky it isn't a fluid drive car Quote Link to comment Share on other sites More sharing options...
Robert Horne Posted October 22, 2013 Report Share Posted October 22, 2013 My friend next door came home one night, parked near his garage, left his truck,( newer Ford), running in neutral, set the park brake, and went to unlock the garage door. After a few seconds, his truck started rolling backwards. I ran down to help. I got in the truck to move it for him, put it in drive, but it would not move forward, until I let the parking brake off. I have seen this same situation with other cars/trucks, that the parking brake does not hold good in a backward downhill situation. I have never tried my Coupe to see if it would hold backward as good as forward with the park brake applied...... Quote Link to comment Share on other sites More sharing options...
james curl Posted October 22, 2013 Report Share Posted October 22, 2013 All most all vehicles with drum rear brakes can have the emergency brake over ridden if driven in the reverse. Quote Link to comment Share on other sites More sharing options...
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