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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

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  #1  
Old 08-28-2009, 04:24 AM
underwaterboy82 underwaterboy82 is offline
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1993 F150 E4OD Problems

i have a 93 E4OD and the overdrive if not working right. while i was driving i went to pass someone and the tranny kicked. it felt like i had got rearended while driving 45mph. now when im stilling still and you put it into drive with overdrive on it will not go forward, but if you leave the shifter in drive and turn the orvedrive off via the button on the shifter it will go forward using the manual 3 speed part of the tranny. also while in drive w/ overdrive on if you pull the shifter down to 2 it will go. the odd part is that while driving w/ overdrive off and traveling 50mph i can turn the overdrive back on and it will work fine until you 1.) slow down under 47mph or 2.) go to pass ya know when it drops a gear when you mash on the pedel. so my problem is that its not shifting between 3rd and overdrive i believe by itself.
i was wondering if anyone has any ideas before i just rip it out and tear it apart.

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Old 08-28-2009, 07:48 AM
danr1 danr1 is offline
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First thing you should do is check for trouble codes, may lead you to the problem.

Best "guess" based on what you said so far? "MLPS" (Manual lever position sensor) Down on the side of the trans, tells the computer what gear you put the truck in.
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Old 08-28-2009, 11:34 AM
underwaterboy82 underwaterboy82 is offline
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so where would i go to get the tranny read. im iliterat when it comes to tranny's
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Old 08-28-2009, 11:47 AM
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so where would i go to get the tranny read. im iliterat when it comes to tranny's
The same place as you read the codes for the engine. It is the same computer.
You can read them yourself by grounding the STI wire, turning on the key and counting the flashes on your MIL.
Write them down and then post them back on the Forum and we will give you some more help with them.
For more information on the reading them go to:
http://fordfuelinjection.com/?p=13

But as danr1 said it is more than likely you have a bad "MLPS" (Manual lever position sensor). It is located down on the side of the transmission where the gear selector shaft goes into the transmission.
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Old 08-28-2009, 11:54 AM
underwaterboy82 underwaterboy82 is offline
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what is the MIL, sorry guys besides the tranny electronics really confuse me,
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Old 08-28-2009, 11:55 AM
underwaterboy82 underwaterboy82 is offline
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hey subford i use to live and got inlaws in olathe and kc, ks. nice to see another midwestern
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Old 08-28-2009, 12:01 PM
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what is the MIL, sorry guys besides the tranny electronics really confuse me,
MIL: Malfunction Indicator Lamp on the dash.
Some call it the CEL on the GM line but Ford calls it the MIL.
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Old 08-28-2009, 12:07 PM
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ok and that is the engine light right
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Old 08-28-2009, 12:19 PM
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ok and that is the engine light right
That is right.
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Old 08-28-2009, 12:31 PM
underwaterboy82 underwaterboy82 is offline
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ok and what was the STI wire
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Old 08-28-2009, 02:06 PM
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Did you click on the link I gave you above for:
http://fordfuelinjection.com/?p=13 ?
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  #12  
Old 08-29-2009, 09:35 AM
underwaterboy82 underwaterboy82 is offline
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now is the MLPS something i can get from a bone yard or at try one
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Old 08-29-2009, 10:13 AM
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Do as subford stated and pull your codes. It may be the mlps, but lets not put the cart ahead of the horse. Follow the link provided and follow the simple instructions. It is very easy to pull the codes. This will likely tell you what the problem is.
Should it prove to be a mlps....it is a cheap part, and easy to change.
You can get one from a junkyard....but again, it's a cheap part.
may also be the vss(vehicle speed sensor) located on the diff. Also a cheap part that is easy to change. Could be just a bad connection. This happens as a lot of debris collects around the connections on the transmission.

I am assuming of course that you have already checked the fluid levels to ensure that they are to specs.

Good luck!
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Old 08-30-2009, 08:47 AM
underwaterboy82 underwaterboy82 is offline
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yes ottawa i check the fluids, manner of fact i changed them and the filter. when i pulled the pan the filter was in the bottom, im assuming from when it kick so hard.. also found that the cooling lines in the radiator were either odstructed or blocked but i cleared them completely. ill get the codes today and post
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  #15  
Old 09-01-2009, 01:55 AM
underwaterboy82 underwaterboy82 is offline
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would a MLPS out of a 88-95 f150 with a 4.9 or 5.8 w/ e4od be the same sensor. also does it matter if it comes out of a 4x4 or not. oh yea the sensor was 77.96 from ford and it would have to been ordered. i ganna hit the junk yard first
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Old 09-01-2009, 01:55 AM
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