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| Sticky throttle, '65 Dart https://slantsix.org/forum/viewtopic.php?t=8081 |
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| Author: | Paul [ Mon Jan 12, 2004 7:06 pm ] |
| Post subject: | Sticky throttle, '65 Dart |
Hi everyone! A got a newa and annoying, problem. I don't drive my old '65 that many miles but its being pressed into service for awhile (dead reliable). I didn't ever just park it, but annual mileage did drop to a few days a week. Anyway, this is the old shaft linkage throttle with an auto tranny. So it can't be a cable 'cause there isn't one. The throttle works, but when you try to release it, it returns with a jump from a certain point. I end up releasing to much and then having to push back down to what I wanted. The problem point seems to be either one spot or a very narrow area a little above the middle of travel. This can get annoying as it happens most often at freeway speeds (and also some in town hills). My Dad had an old Mopar too, for many years (a red '65 Belvedere 1 from new to 1988), but he has no idea because it had a cable throttle and a manual tranny. I've tried some basic lubing with graphite lock fluid, but didn't hit the 2 pedal pivots or anything going into the tranny. Because of the throttle design I can only check with the throttle connected (doesn't work disconnected) and that will flood it quick. I'm going to take another stab at it tomorrow, but was hoping for list wisdom. Oh, the throttle return spring is stock as has worked well for many years (I've owned this old Dodge since '86). Thanx, Paul |
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| Author: | mighty mouse 63 [ Tue Jan 13, 2004 4:26 pm ] |
| Post subject: | |
Been there, did this: installed a second return spring to pull the rod back up, clip one end to the existing bracket and the second to one of the hood torsion bars, funky, but effective. Use the lightest spring possible that will give you the desired results as this does increase pedal pressure..Dave |
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| Author: | Doc [ Tue Jan 13, 2004 6:22 pm ] |
| Post subject: | |
There are a lot of pivot points and bushings in the rod linkage system, you will need to inspect those spots to see if the joint / bushing is worn. http://www.slantsix.org/articles/hyper- ... inkage.jpg My guess is the the small coil spring or the bushing behing the peddle itself is the problem. Also look at the kickdown linkage, it is hooked directly to the rod linkage and will "hang-up" if it rubs on anything, like the speedo cable which passes close by. DD |
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| Author: | Guest [ Tue Jan 13, 2004 6:40 pm ] |
| Post subject: | |
You didn't mention ambient temperature, but we recently hit 30 below in SW Montana and when I pushed the pedal down to set the choke in my 75 Dart, it stuck to the floor like it was glued. I squirted a few drops of "dripless oil" (a thin oil that "runs in--won't drip out") on the shaft running into the carb that pivots the linkage and it was good to go. Started right up, too! MTSteve |
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| Author: | Paul [ Tue Jan 20, 2004 1:53 pm ] |
| Post subject: | |
I found it! It was at the carb. A little touching drag in the throttle linkage can be easily felt inside. I also took the time to clean everything up, put a drop of fresh lithium grease in each of the little ball joints, and fresh graphite on the plastic bushings. Feels real nice again. Thanx Paul |
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