Tranny won't shift

press77

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Apr 8, 2005
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Hey guys need help. My tranny won't shift. When I'm sitting in my car before I take off, the o/d button works fine (lights up when o/d is off and goes off when depressed), But when I take off tranny doesn't shift at all and o/d light begins to flash involuntary and I'm unable to stop it. Is the tranny shot or is there something that I can do for a fix. By the way the car is a 1996 mark viii.
 
OD light flashing should mean an electrical problem in the transmission. As the kid said, have the codes read.
 
Hey guys. finally got around to getting codes for tranny read. Code was 720 or output speed sensor. replaced it and have the same problem. What to do
 
there is 2 speed sensors....a turbine speed sensor, and a output speed sensor...sometiems referred to as the turbine speed sensor...you would have had a vehicle speed sensor code if it was the other speed sensor
 
Wouldn't hurt to replace the MLPS as cheap as it is. No draining of anything to change it either.

MLPS

What's the acronym of? Is it something worth replacing even if it ain't broke ok a genII?

I see it mentioned alot just never knew what it was.
 
MLPS= Manual Lever Position Sensor

most auto parts stores will list it as a Neutral safety switch, but its far more than that in reality
 
EPC failure will cause the O/D lamp to flash. Could be due to low fluid pressure or a bad solenoid. Was there any preliminary symptoms?
 
Ok. Took pan off to change solenoid. But the solenoid that I got looks to be the one that is kind of up by where the shifter shifts. Is this the right one for me If the car is stuck in second. There was only a speed sensor code in car and I corrected that. Is there an easy way to replace that solenoid or am I replacing the wrong part.
 
just got off of advance auto's site. I think they sold me the solenoid that has to do with line pressure. Can it easily be changed? I think the solenoid I need looks like two squares. the shift solenoids. I need help?
 

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