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Old 12-15-2009, 09:54 PM   #1
asdaven
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Throttle and TV Cable Adjustment

Hi- I have a 1987 Bronco with a 5.0 L 302 V8 and a AOD transmission. My transmission has always shifted roughly and not at the right time. Its always seems like it gears down when its not supposed to, then gears back up again. Basically, going in between gears constantly. It also seems like it revs up the rpm's before it finally switches to the next gear, especially in the lower gears. I was told the only way to adjust the transmission on a AOD Transmission is to adjust the TV Cable. How do you go by doing this? In addition, the throttle is pretty stiff and seems to stick sometimes. Is there a way to adjust the throttle cable also? I would told to lubricate the cables real well.
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Old 12-15-2009, 10:39 PM   #2
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Old 12-15-2009, 10:44 PM   #3
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Could the problems im having with the transmission have to do with the TV Cable Adjustment? If it is, is it too tight or too loose. I heard that tight is better, but like that video says "Neutral" is best.
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Old 12-15-2009, 10:49 PM   #4
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Could the problems im having with the transmission have to do with the TV Cable Adjustment? If it is, is it too tight or too loose. I heard that tight is better, but like that video says "Neutral" is best.
Do exactly as the video says. An improper adjustment on that tranny can result in premature failure.

I believe that your issue is most likely from the TV cable being out of adjustment. Kicking in and out, and holding low gears for a long time is a sign that it needs it.
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Old 12-15-2009, 10:52 PM   #5
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And is it alright to do it like that? I heard you need to test the PSI or something? Does it sound like my TV Cable is loose or tight?
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Old 12-15-2009, 10:57 PM   #6
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And is it alright to do it like that? I heard you need to test the PSI or something? Does it sound like my TV Cable is loose or tight?
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Do exactly as the video says.
Sounds like its too tight. Like it's registering too much throttle pressure, since its kicking in and out.
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Old 12-15-2009, 11:36 PM   #7
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Do what video says and you'll be fine....lubricate the linkage on your throttle body with lithium grease
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Old 12-16-2009, 12:26 AM   #8
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some other questions-how's the truck otherwise? milage, maintenance, etc. you note that it has always done this, since new, or since you've had it? I ask because I doubt the tv cable stretched or slackened that much over time. I've seen the odd shift and hopping in and out of overdrive on a 302/oad in an f150 and it turned out to be a intake leak. truck didn't idle fast, ran smooth, etc, but there was just enough torque loss from that lost cylinder that your foot had to be more in it to go, which in turn affected the tv cable, since it is attached to the same butterfly linkage as the throttle cable. might do a quick check of your spark plugs and see if one or more of them look fouled, lean, etc. you might find something else is the root cause of the shift issue. this chart is helpful if you don't have a mechanic buddy reading to analyze the plugs
http://www.ngksparkplugs.com/tech_su...qs/faqread.asp
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Old 12-16-2009, 10:26 AM   #9
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Thanks-
I am changing the spark plugs, wires, and replacing the ignition coil soon. The Transmission was flushed not too long ago, but I will check the Transmission Fluid for the heck of it. What about adjusting the cable that comes from the actual accelerator pedal? It seems stiff and almost seems to stick a little at times.
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Old 12-16-2009, 11:28 AM   #10
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yo!
Also,
Throttle Valve (TV) Brass Bushing "...are known to have problems with TV cable adjustment, and it's often due to the original rubber bushing cracking & falling out while driving, which normally destroys the transmission in a couple of miles. But it's so common that Ford makes this upgraded brass bushing (see pic for Ford part number), which is cheap (~$10) & easy to install..."
Source: by Steve83 (Steve, That dirty old truck) at SuperMotors.net
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Old 12-16-2009, 04:41 PM   #11
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I actually think it was too loose, its better now. I basically followed the video and maybe put a very minute amount of tension on the cable adjusting it. But, it shifts smoother now. It does do the back and forth thing between gears, but its better. Before it was letting the rpms run up before it would shift.
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Old 12-16-2009, 06:29 PM   #12
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Sorry, but heres a dumb question, when you all are talking "tight" and "loose", do you mean tight and loose at the throttle body end of the cable? Like if there is tension from the adjuster to the end of the cable, is that tight?
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Old 12-16-2009, 08:45 PM   #13
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Shoot. Im scared if I adjusted the TV cable wrong. It feels fine driving, but I read your TV cable can be way off and it feel fine and that you need to check the pressure with a gauge while you adjust it. I don't want to crap up my transmission.
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Old 12-17-2009, 12:34 AM   #14
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Adjust TV cable so it not or loose but "neutral" just like video says. Also is your tranny fluid low? Are you driving in OD or D? If you're doing a lot of around town driving in OD tranny is constantly gonna be switching between 3rd and OD. Put it in D around town and in OD on the interstate at speeds of 60 and above.
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Old 12-17-2009, 01:10 AM   #15
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Quote:
Originally Posted by sackman9975 View Post
Watch this video

6L3hNzxdiYw
That was soooo easy!!! I don't need the adjustment but I've read the description for this adjustment in the manual and it seemed more complicated. Thanks for posting that sack, it went straight to bookmarks!
That is good to know as well, thanks to you Miesk
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Old 12-17-2009, 10:01 AM   #16
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The video by Ken is ok.
I'd do this;
Throttle Valve (TV) Cable Adjustment & Diagrams; Using a 100 psi pressure gauge to the TV port on transmission & with engine off & on.....
Source: by Steve83 (Steve, That dirty old truck) at SuperMotors.net


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Old 12-17-2009, 12:24 PM   #17
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....Meisk uhm...reading, better than video?

REALLY?

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Old 12-17-2009, 02:40 PM   #18
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....Meisk uhm...reading, better than video?

REALLY?

yo Walt!
Ken's Video shows the manual adjustment process; Ford/Steve's shows the same plus the so-called "preferred method" (see Baumann/TCI, etc for their recommendations, some Links below) using a pressure gauge.
The vid is ok, but I'd jump on da gauge process.


Throttle Valve (TV) Cable Adjustment; Using a 100 psi pressure gauge to the TV port on transmission - "...NOTHING can ruin an AOD transmission as quickly as improper TV settings. If you are unclear or uncomfortable with the procedure do not attempt this adjustment yourself. This information is meant to supplement, not replace, information that can be found in Ford service manuals for adjusting the TV pressure..."
Source: by tciauto.com


Throttle Valve (TV) Cable Adjustment; Using a 100 psi pressure gauge to the TV port on transmission; "...If you don't have a gauge, or you are looking for a roughly correct place to start, you can remove the cable from the throttle body lever, and adjust it so that the cable is neither slack, nor under tension when the cable is reinstalled on the throttle body lever. This will get you fairly close. We do not reccomend this for a final setting. You should always use a gauge to verify your TV setting..."
Source: by Mike B at Baumann Engineering baumannengineering.com


Throttle Valve (TV) Cable & Adjustment; "The best way to set the TV pressure is with a pressure gauge tapped into the side port of the transmission.. There is a tool you put on the end of the TV cable to set some preload and then you adjust the TV cable so that it reads exactly 5 PSI..(in neutral, with the motor warm)..." read more
Source: by MYLITTLEHO at corral.net via magnumpi at FSB
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Old 12-17-2009, 03:36 PM   #19
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just messing with ya, the more info the better.
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Old 12-17-2009, 04:59 PM   #20
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ok..lol.. you are hereby entitled to 3 More Messin' With Me posts as an Early Christmas Present from us...

Yeah, more is better... Would like to see what a tranny shop charges for the adjustment, both versions.

Sixlitre had his done with a free bushing install by a local good-guy mechanic up there in da frozen North
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