1987 Crown Vic, 5.0FI, AOD, 87k original miles.
This is my dad's car. Last week, I gave him my five kids and my van for a
week, and he sent me home with this car. That was Saturday. On Monday, I
noticed the transmission shifted very hard from first to second under light
to moderate throttle. On Tuesday, we drove it maybe a total of 10 miles.
It was acting VERY badly. Here's the symptoms:
Slipping, shudder, or a hard shift from 1 to 2. Very early shifts, and no
desire to downshift. It will not downshift from 3 to 2 under full throttle
unless the car is going less than 20mph! Shifts from OD to D are present,
but slip horribly. To give it enough throttle for it to shift out of OD, it
will shift to 3rd, but not engage completely, i.e. it keeps slipping.
Fluid is full and pink. I have no idea how long it's been since a filter or
fluid change was done, if ever, but the fluid looks great. When I called
dad, he said that he had noticed the occasional hard shift, but never had
noticed any slippage. Of course, I just drove it 350 miles...
Now, here are my questions:
I haven't had the time to look yet, because of the dark last night, but I'm
wondering if the TV cable is broken or disconnected. I know there was at
one time a problem with the retaining clip at the throttle body. But if it
were that, I wouldn't get any downshifts, right?
I know that a stopped up filter can cause slippage, but would it also
account for the other symptoms?
I seem to remember someone once saying that the seals in the valve body can
rot and crack, causing problems. Would that cause the low transmission
pressure? Would it explain the problems?
Lastly, what would you do now? I'm thinking: 1. Check the TV cable, and
maybe tighten it up a bit just to see what happens. 2. Change the filter
and fluid in the pan. I'd drain the converter too, but the fluid has no
signs or smells of burning or contamination. 3. I'm wondering if a person
could replace the seals in the valve body without removing the transmission,
or maybe even a shift kit. Anyone know?
By the way, I'm supposed to drive it back to him, all 350 miles, on