Map Sensor Question..... - Ford Powerstroke Diesel Forum
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post #1 of 3 Old 03-20-2012, 07:55 PM Thread Starter Rookie
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Map Sensor Question.....

alright you gurus of the 7.3 here is my story, 2 years ago i bought a 93 diesiel 7.3 non turbo with an automatic. it always seemed to shift a little hard like it had a shift kit in it. I never thought much of it as this was my first disiel, well about 15 months into it the tranny started neutraling when slowing down so parked it and crawled under it to find tranny fluid running out of the breather hole. I knew what this meant the tranny is shot either front seal or torque converter. so had it towed to a tranny shop (no facility to do it myself) and had a new tranny put in to the tune of $3000.00 it included rebuilt tranny with a shift kit and heavy duty everything including torque converter. so cleared all the codes and it seemed fine for a few miles then starged shifting hard like something wrong hard. took it back to the tranny shop and they pulled the codes got a map sensor code wich triggers the torque converter to disingage code. the probelem is that when looking at the map sensor the three wire conector is hooked up however the hose that goes to it is missing. I asume the previouse owner did something to disconect it and now it is causing shofting issues. this brings me to the quetion and the point of this thread. Where does the vacume line from the map sensor go to? I have searched Google and come up with nothing, I have searched the forum and got nothing as well for this particular scenario.

Thanks in advance for the help

Thanks for the help
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post #2 of 3 Old 03-31-2012, 05:07 AM
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I have a 97 with a turbo and mine is on the pass. side about mid way on the block,I believe the blocks are the same,I also had a guy tell me that some guys plug the block and use a T and run the hose back to itself on the T, I forget what this was suposed to do by doing it though,
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post #3 of 3 Old 03-31-2012, 05:30 AM
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The hose should run to the intake, so it can sense the manifold air pressure.

2000 F-350 Lariat Super Duty, Dually, CCLB, 7.3L
4R100, 2wd
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