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Old 05-21-2011, 02:01 AM   #1
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AOD Shifting Very Late

I have a 91 LX AOD shifting at high rpm. It's typically shifting at around 3500 rpms and letting off the gas. It's got a new transmission that has been built up and has a "Transgo Full Race shift kit". TV Pressure has been checked by multiple ford mechanics and other mustang specialists and they say the transmission is working fine and that it's more than likely the shift kit causing the shifting. Somehow, I feel that it may not be the shift kit. It's a new transmission that was pre-built with high performance parts, so I don't think the governor or valve body is stuck in someway.

Will post a video soon of the issue for better illustration.

""If the TV cable is not connected the transmission will default to full TV pressure. If TV pressure is full shifts will only occur at the wide open throttle shift point, which is usually around 4900 RPM. This means that even at light throttle you would have to get to 4900 RPM to get a 1-2 shift." --Sounds like I have too much TV Pressure as this sounds about like my issue." - Baumann

Is there any truth to the above statement?...My cable is attached by the way.
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Old 05-21-2011, 03:00 AM   #2
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Re: AOD Shifting Very Late

What stall converter do you have on it? Other mods you have done to it? You may have posted throughout your other posts but it will help to have a list of your recent cars modifications around the time this started becoming an issue.
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Old 05-21-2011, 08:00 AM   #3
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Re: AOD Shifting Very Late

Well my stock AOD in my 93 did the exact same thing. I think that they may just shift at a higher RPM to begin with. Mine was a four cylinder so it may have been doing it to compensate for the small amount of horse power
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Old 05-21-2011, 09:31 AM   #4
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Re: AOD Shifting Very Late

The mustang only has an E303 cam and 2200 Stall converter.
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Old 05-21-2011, 07:20 PM   #5
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Re: AOD Shifting Very Late

It almost has to be the governor sticking or your TV cable is not adjusted properly.
If those are not the issue, I'd return it to the builder.
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Old 05-21-2011, 07:38 PM   #6
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Re: AOD Shifting Very Late

I finally went out and "No ****" hammered on it and it very easily went through all 4 gears while in OD. 1-2 shift happened right around 5000-5500, 2-3 around 3500-4000 since I got off it a little on the 2-3, then 3-4 at around the same as 2-3. I finally got ahold of the transmission manufacture and he told me there is a TransGo Full Race Shift Kit in there and it DOES have the Hi Rev Governor installed and he also told me that it sounds like my TV pressure is slightly too high, since he claimed it was somewhat normal for it to shift under normal driving at around 2500-3000 rpms with the shift kit and Hi Rev governor. He said with the TV pressure set even the slightest too high will cause it to shift about 500 to 1500 than normal. He said for me to back off on the pressure and it should run normal for having a Full Race Shift Kit with Hi Rev Governor. What do you guys think?
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Old 05-21-2011, 09:32 PM   #7
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Re: AOD Shifting Very Late

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I finally went out and "No ****" hammered on it and it very easily went through all 4 gears while in OD. 1-2 shift happened right around 5000-5500, 2-3 around 3500-4000 since I got off it a little on the 2-3, then 3-4 at around the same as 2-3. I finally got ahold of the transmission manufacture and he told me there is a TransGo Full Race Shift Kit in there and it DOES have the Hi Rev Governor installed and he also told me that it sounds like my TV pressure is slightly too high, since he claimed it was somewhat normal for it to shift under normal driving at around 2500-3000 rpms with the shift kit and Hi Rev governor. He said with the TV pressure set even the slightest too high will cause it to shift about 500 to 1500 than normal. He said for me to back off on the pressure and it should run normal for having a Full Race Shift Kit with Hi Rev Governor. What do you guys think?
Listen to what he says, they built the tranny and should know what it requires.

Note: Unless the transmission was modified to handle it, I would be careful about letting it shift into O.D. at WOT. The O.D. portion of the trans was never designed or built to handle that.
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Old 05-21-2011, 09:36 PM   #8
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Re: AOD Shifting Very Late

Yes, they may say it's "normal", but that may be just to keep me happy of their product. I dunno if it will actually work. Will let you guys know tomorrow after I readjust the tv cable.

EDIT: I never went into OD under WOT after 3rd I let off the gas a bit.
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Old 05-22-2011, 05:38 PM   #9
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Re: AOD Shifting Very Late

Here is a video I took on impulse when I drove the stang around the block of my neighborhood. At no point of this recording am I going farther than 1/2 throttle. You can easily notice later in the video that I do get on it very briefly ( no more than. At the beginning I'm going at slight throttle all the way until I say something in Hungarian to myself ("It's crazy"). After that I'm going at about 1/8 throttle until I turn again. At about 1:28 I push it to about 1/2 throttle very briefly then slow to about 1/8 throttle until I turn again. At 1:50 I'm pushing very very slightly on the throttle because I'm turning again quickly back to my street. Note that it just creeps to 3200 RPM then shifts on it's own. All shifting is pretty firm, which feel fan-****ing-tastic, especially if I go at WOT it will very easily chirp into 2nd and sometimes 3rd.

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Old 05-24-2011, 08:19 AM   #10
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Re: AOD Shifting Very Late

so did u get it figured out? my aod runs very similar to yours.
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Old 05-24-2011, 11:29 AM   #11
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Re: AOD Shifting Very Late

Nope, still trying to figure it out.
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Old 05-24-2011, 03:06 PM   #12
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Re: AOD Shifting Very Late

did you adjust the t.v. cable yet? you should adjust it to zero setting. completely close throttle blade. slide t.v. cable in so there is no tension in either direction, then lock it down with the clip.

not sure if you've tried it that way or not. that's pretty much how ford had them set at the factory.
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Old 05-24-2011, 05:19 PM   #13
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Re: AOD Shifting Very Late

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Originally Posted by svtlx View Post
did you adjust the t.v. cable yet? you should adjust it to zero setting. completely close throttle blade. slide t.v. cable in so there is no tension in either direction, then lock it down with the clip.

not sure if you've tried it that way or not. that's pretty much how ford had them set at the factory.
I've done just about everything you can do minus opening the transmission pan/valve body. I have the complete DVD of the "infamous" youtube video of Kenneth Collin's AOD TV Adjustment. In the actual DVD he goes into more details in setting the TV cable.

Believe me when I say this...I've checked the TV Pressure both at the cable and via pressure gauge in the correct port. I have not gone into the valve body or governor yet.
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