1998 Plymouth Breeze 2.0L, Ongoing Problems

Well, this is the strangest problem I've ever encountered.
I was having Check Engine light problems, P0700 & P0725 codes.
Took the car to non dealer for diags, they said TCM or crank position
sensor bad, but couldn't say 100% which one, or if it would fix the
intermittent problem.
Replaced to date, input and output trans speed sensors (there was ATF in
one of the connectors), trans fluid flush and replace with ATF +4 (at
$8/quart!) Plugs and wires, fuel filter (who thought to mount this so you
have to drop the tank, STUPID)
I have swapped trans relays, there are two the same underhood.
Checked fuses, OK. Cleaned all grounds under the hood, disconnected all TCM
and ECM connectors and cleaned, wiring connector at trans (there was some
ATF in this one, too), pulled and cleaned. Disconnected the connector on the
cam position (?) sensor at back of head, it was full of oil from blown head
gasket, cleaned and reconnected.
So, nothing fixed, off to the dealer for diags. A few miles from the
dealer, check engine light goes off! Trans seems to be acting normally.
Don't leave the car, since intermittent problems are just a B(_)&((*)CH to
find.
Now, when cold the trans sometimes slams on the 1-2 shift, almost feels
like it is slipping on shift, sometimes. When this happens, 2 -3 shift is
harder than normal. Still sometimes will go into limp, but then goes back to
normal operation. At no time since the Check Engine light went off has it
come back on.
Well, I'm really frustrated at this point. This car has 63K, and just
doesn't seem like it should be this screwed up.
I've already spent $600, and the car is only worth $3500!
Any suggestions, besides a cracking good underhood fire?

 

Replace the TCM. I have a friend with the same car that had nearly
the exact symptoms (although not as many!), and a new TCM cured the
trouble code and cured a runaway 1-2. Don't know if he had a firm
2-3, though. Until the new TCM was installed, the slippy 1-2 was
constant, as was the code/light.

 

Good read for anyone with FD 4 speed trans
http://www.allpar.com/fix/trans.html

 

Well, took it to the dealer. They got into the problem and it appears that I
got an inferior quality input sensor from Auto Zone. The connector appears
to be not correctly sized for the wiring connector, providing intermittant
connection. OEM sensor, at $30, seems like the ticket.
I'll post again after I drive some more miles.

 

Well, this is really annoying! After trip to the dealer, and input sensor
replacement, I thought everything was fine. All symptoms gone. Took it for a
30 + mile drive this weekend and when I got off the freeway, check engine
light back on!
Went into limp mode, so I parked it and had food. Came back out, shifting
fine, check engine still on. Drive about 15 miles, check engine light went
off, working fine (for now)
Well, I'm into this about $700, and still no fix! Dealer states that TCM
usually OK on this car.
Any suggestions on how to get this fixed? Any and all problems found by the
readers of this, related to this problem might help.
I'm really disappointed that at 63K, and regular service, that this is
happening.
Newt car will be an import, for sure...