No start neutral safety switch problems
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Freshman User
Joined: Sep 2006
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From: Subiaco Ar.
No start neutral safety switch problems
I have a 1990 Ford F150 4.9L/E40d transmission. Today when i tried to start it i had to move the shifter lever to neutral and back several times before it would crank to start. Can somebody please tell me where the neutral safety switch is located and how to troubleshoot it. Thanks, Jay
Laughing Gas
Joined: Jan 2005
Posts: 834
Likes: 0
From: South East Florida
MackManJ, it should be right under the cab between the front of your seat and the pedals . . . right on the side of the trans . . . depending on which trans you have of course.
I would jack the truck up on all four corners
it CAN be done without doing that but PLEASE PLEASE PLEASE use wheel stops or chocks(sp?)
once you disengage the Neutral Safety Switch the truck will want to roll if at an incline
that being said, relax . . . this is a super simple fix
it's literally a remove and replace type of procedure
remove the sensor harness and clean it up with some rubbing alcohol and a cotton swab if you'd like . . . or some cleaning solution made specifically for sensors and electrical components but this is not necessary
remove the two or three bolts from the switch and replace with the new one.
make sure you put the selector bar back where it was. this is what moves your gear selector at the column
it will be a little tough but it IS doable and NO it wont NOT work lol
it might be tough to get back on there but it WILL go in.
you'll see what i mean
once you get it back in make sure you move the selector bar in place and have someone make sure it is in PARK in the cab if you'd like to double check
reinstall the bolts and the harness and you're good to go
no more starting problems
at least not because of the switch
if this doesn't work, check your multi function switch in the column with a multimeter
set it to ohms and test each circuit in there. you might find one that doesnt make the multimeter sound and this will tell you that it is broken and THERE is your problem
good luck
I would jack the truck up on all four corners
it CAN be done without doing that but PLEASE PLEASE PLEASE use wheel stops or chocks(sp?)
once you disengage the Neutral Safety Switch the truck will want to roll if at an incline
that being said, relax . . . this is a super simple fix
it's literally a remove and replace type of procedure
remove the sensor harness and clean it up with some rubbing alcohol and a cotton swab if you'd like . . . or some cleaning solution made specifically for sensors and electrical components but this is not necessary
remove the two or three bolts from the switch and replace with the new one.
make sure you put the selector bar back where it was. this is what moves your gear selector at the column
it will be a little tough but it IS doable and NO it wont NOT work lol
it might be tough to get back on there but it WILL go in.
you'll see what i mean
once you get it back in make sure you move the selector bar in place and have someone make sure it is in PARK in the cab if you'd like to double check
reinstall the bolts and the harness and you're good to go
no more starting problems
at least not because of the switch
if this doesn't work, check your multi function switch in the column with a multimeter
set it to ohms and test each circuit in there. you might find one that doesnt make the multimeter sound and this will tell you that it is broken and THERE is your problem
good luck
Laughing Gas
Joined: Jan 2005
Posts: 834
Likes: 0
From: South East Florida
oh by the way, i forgot to mention
the picture that wingman gave you a link for . . . look at the bottom left side of the picture
from the angle you will be in when checking for this thing. that is what you will see when you get under there.
it is about the size of a credit card or a small cellphone
you can't miss it. it is usually sitting out there on the trans all by itself and like i said, usually it is right underneath the floor pan between the pedals and the front of the seat
the picture that wingman gave you a link for . . . look at the bottom left side of the picture
from the angle you will be in when checking for this thing. that is what you will see when you get under there.
it is about the size of a credit card or a small cellphone
you can't miss it. it is usually sitting out there on the trans all by itself and like i said, usually it is right underneath the floor pan between the pedals and the front of the seat
Thread Starter
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Freshman User
Joined: Sep 2006
Posts: 39
Likes: 0
From: Subiaco Ar.
Hey Guys, Thanks for the info. I got the switch today and hope i can put it on tomorrow. I didnt realize the mpls and the neutral switch were the same switch. I'm an old style points and carburetor guy. Looks like it should not be hard to fix. Thanks again, Jay
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