Older AOD problem

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Mar 24, 2007 | 01:33 PM

blitzkraig56

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Joined: Nov 2000

Posts: 187

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From: Santa Cruz

Older AOD problem

So here's the setup. A stock 302 from a 71 Torino with Holley Carb mated up to an older (non electronic) AOD using a Lokar Throttle Valve Cable. The tranny has been rebuilt but I have yet to get it to shift quite correctly. It shifts fine under normal acceleration but once I get up to a cruising speed on the downtown streets it shifts up one gear too many so the motors going only 1000 rpm. When I need to speed up it won't downshift unless I smash down on the pedal. I tried setting the TV cable with a pressure gauge using the proper specs ,28-33 psi with a 3/8th inch spacer pulling the cable while in neutral, but the gauge reading is way over the required psi when I put in the correct spacer. I'm rather baffled at this point! Any advice besides taking it to a Ford dealership and having my wallet raped? Thanks!

Mar 24, 2007 | 02:04 PM

385seriesHemi

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Joined: Jan 2006

Posts: 1,101

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From: Malvern, Ohio

Dont go to Ford to have this looked at, it wouldnt be worth it. Find a reputable transmission guy. Seems to me theres something wrong with a valve or 2 in the valve body. Check the vaccum line that comes from the modulator, that could have trans fluid in it from being a bad/leaking which could be causing the fast upshifting. Take a peak at that first. Ummm if it doesnt downshift normal whoever rebuilt it mighta missed something during the re-assembly.

Mar 25, 2007 | 04:05 PM

rclarke

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Joined: May 2003

Posts: 1,525

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AOD has no vacumn controls. You might try setting the throttle pressure up some. When I was working in a dealership I worked on a lot of police cars. We had the best results for longevity and shift quality at 40-42psi with the proper testing spacer on the linkage.