95 Ford Contour with a 2.5L V6, automatic transmission, and about 118,000
miles. Just replaced water pump (don't think there is a connection), now,
while driving down the road, the engine will race up 1000 to 1500 rpm. It
feels like the transmission becomes disconnected from then reconnected to
the engine. This will happen sveral times in rapid succession usually
accompanied with a fairly violent 'clunk'. Makes me think that the engine
and transmission are being dissconnected with a relay or something. I
haven't adjusted or messed with the transmission linkage. This usually only
goes on for 5 - 10 miles or so and then subsides. Using the O/D Off button
seems to affect, but not eliminate the problem. I checked the transmission
fluid, looks OK, doesn't smell bad, and level seems to be OK. Please help.
The Check Engine works but does not come on while this is occurring.
Since I had just replaced the water pump before this all started, I thought
that I may have caused a problem with the gear position connector (located
in the way of removing the water pump). I moved hoses and checked, didn't
find any obvious problems other than insulation brittle and cracking off.
Re-insulated, plugged connector back in, connected hoses (at thermostat) and
tested. Did not fix problem.
Something else that occurred but I don't see any connection is that my
crankcase was filled with water! No kidding, listen to this. The water
pump failed and the car overheated just as my wife arrived at her
girlfriend's house. The girl's father offered to help and figured that
since it overheated, it must need water. Not seeing a radiator cap, he
removed the engine oil fill cap and poured nearly 5 gallons of water into
the engine before his buddy pointed out that it was the engine he was
filling and not the radiator. They immediately drained the engine (the car
had not been started) and refilled with the right amount of oil. They then
sent my wife on her way. Later that day when I heard what had happened, I
changed the oil and filter again. Like I said, I can't see how this would
cause a problem with the transmission, but just in case, I wanted to relay
as much info as possible regarding the events leading up to the problems
with the transmission.
Any suggestions? I have searched several 'ask the expert' type sites and
left the story, but no help yet. I can't afford to take it to a shop so I'm
on my own. I guess I need to read up on how this transmission works and is
controlled. If anyone can recommend a good resource for this I would
Thanks for reading.