Automatic Downshift Cable Disconnect
After poking around under the hood looking at the emissions system, I came across the transmission kick-down cable (which I thought was electronically controlled intead of hooked to the throttle body).
The mod: remove the cable attachment to the throttle body. If I'm willing to "whip it into shape" via the gear selector when things get urgent, are there any downsides? Recently quoted by someone: "An engine is most efficient at 2/3 throttle at high load between 2000-3000 RPM." I've found that's is hard and sometimes impossible with that darn kickdown. A concern: Wondering if the TC is involved in the cable position, or if it's based on load. Is it worth giving a try? RH77 Edited: Forgot to mention the mod, duh and grammar |
Is this on the Integra or TSX? What is a TC?
I think you'll be fine removing the kick-down cable. |
I'd try it if it were mine.
One concern - are you the only one who drives this car? Is there a potential safety concern if someone else drives it and it doesn't kick down when expected/needed? |
I had mine off for many months, it didnt change anything for me because it shifted at the lowest point already from my driving, so yeah. I'd take it off the throttle body and try it out for a bit, it only takes a few seconds.
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It's ALIVE!
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Dax: It's on the 'Teg -- The TSX is throttle by wire, so it's all 'lectro Metro: I'm the only driver 99% of the time - but a warning will be given or re-connect it quickly (if possible). RH77 Heading out to the Garage EDIT: Dax, the TC is the Torque Converter |
That sucked
Well, that certainly sucked. :thumbdown:
The cable evidently has more to do with the transmission than just a request to downshift. Basically it acted like someone learning to drive a stick-shift: turn a corner and give it some throttle (or get on the highway), it downshifts but engine revs to redline and it's like someone is slowly letting the clutch out while going into gear -- accompanied by that burnt clutch smell. :mad: Also, the TC didn't seem to engage fully at highway speeds. To prevent any further wear, I got off of the highway and hooked it back up. The TCU must intervene with with the "TPS reports". So now, what would happen if it's extended the whole way? I hypothesize that the transmission would be quicker to kick-down and shift harder thinking that it's in open-loop -- or maybe not at all. RH77 |
the kickdown cable might also control the line pressure in the tranny. I know on the 5.0 mustang if you tried to disconnect it the tranny would think you was at w.o.t and wouldn't shift till 5,000 rpm's.
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TH400 and Quadrajet
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My '77 Olds had the Turbo-Hydromatic 400 that kicked-down at like 50-75% throttle via linkage. I was always fooling with than darn Quadra"junk" carb to get it to stay running on cold starts -- the Winter sucked -- sometimes it would take 5-10 minutes of careful idling and throttle input or else it would stall when put in gear. When the weather changed, so did the set screws. Some weekends, I'd fool with it for hours -- good learning experience. Otherwise, great first car. Rollin' couch. RH77 |
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I've got a reverse-pattern MVB in my minivan and I love it. |
Good idea, and Welcome
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So TurboMinivan -- you race your van? I used to have an '88 Voyager with the Mitsu 3.0L V-6, but always wanted the turbo. Also, Welcome! If you like, post in the "Introduce Yourself" forum about your Minivan Racing Ambassadorship :) RH77 |
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