Trans trouble

I have a 1992 Lincoln Mark VII.Thetransmission works fine until you use overdrive.Once in overdrive it slips as soon as you get to 45mph.In normal drive it works fine.I found out it could be a TV Bushing.Where is this located and is it something that can be done at home?

Reply to
ToddPriest2
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The bushing is located on the end of the TV cable at the throttle body. Here's a link to a tech article:

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If you have driven the car much at all with the cable disconnected, the ODband is likely toast. It only takes a few miles. If you end up shopping for a trans, keep in mind that the Mark VII trans is rather unique. AODs used in Lincolns are a bit shorter than the AOD used in other Ford cars. A Town Car trans will physically fit, but is calibrated differently for smoother shifts at different RPMs.

Reply to
Tom Adkins

Reply to
ToddPriest2

IIRC, ur Mark has the electronic AOD-E trans which does not use the bushing. It is electronically controlled. If the trans converter is slipping or shuddering, the first thing to do is a complete service including changing the filter and draining the converter to get all the old fluid out. Refill with Dexron fluid and use either Shudderfix or Lubegard Red additive in the correct amount for the fluid installed. If it is a fluid problem, it should clear within

50-100 miles of driving if not immediately. Both the AOD and the AOD-E also have a weak point in the OD band which engages around 40MPH in normal acceleration. If it is a band problem, you are in for a rebuild. If it is a failed converter, you may as well rebuild because of the R&R labor expense. If you have a lot of miles on it and service has been neglected, ur chances of salvaging it are greatly diminished. The longer u drive it while slipping the closer u r to complete failure.

Lugnut

Reply to
lugnut

Reply to
ToddPriest2

Reply to
ToddPriest2

The bushing needs to be replaced, leaving it disconnected will trash the rest of the trans very quickly. For ~$3 and 5 minutes, you might get lucky and the OD will work. DO NOT drive it until you replace the bushing if you have any hope of saving the trans.

Lugnut, all of the Mark VII AODs were controlled via a TV cable. They never got the AOD-E.

Reply to
Tom Adkins

Thanks. I could not remember if your was electronic for sure. They went to the electronic in 1992 or 93. The electronic was a big improvement over the earlier AOD.

Lugnut

Reply to
lugnut

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