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Ron
Ron, ASE Certified Technician
Category: Ford
Satisfied Customers: 23001
Experience:  23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs
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It's a 1998 F150, recently been having a problem with the

Customer Question

It's a 1998 F150, recently been having a problem with the #13 fuse blowing, the fuse now blows before it's fully seated in the panel
JA: Have you checked the manual yet? Most vehicles have two fuse panels.
Customer: I have the Chilton book but can't seem to find any answers
JA: What is the model of your '98 Ford?
Customer: F150 xlt 4x4
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: I've unplugged the cruise control sensor by the master cylinder and the brake sensor at the pedal shaft
JA: Anything else you think the mechanic should know?
Customer: There is some clear jelly type stuff on the brake sensor connectors and a poorly repaired wire I plan to fix there
Submitted: 6 months ago.
Category: Ford
Expert:  Kevin Bourcier replied 6 months ago.

hello . is this a 5 amp fuse you are referring to ?

Customer: replied 6 months ago.
No its a 15 amp fuse according to the Chilton manual
Customer: replied 6 months ago.
Locks the shifter in park and controls brake lights
Expert:  Kevin Bourcier replied 6 months ago.

is this the fuse box you are referring to ? inside the vehicle or out under the hood ?

Customer: replied 6 months ago.
Inside the vehicle
Customer: replied 6 months ago.
Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from you: Live Phone Call. Let me know if you need more information, or send me the service offer(s) so we can proceed.
Expert:  Kevin Bourcier replied 6 months ago.

does that illustration look acurate ?

Customer: replied 6 months ago.
it's # 13
Expert:  Kevin Bourcier replied 6 months ago.

that is supposed to be a 5 amp fuse

Customer: replied 6 months ago.
Second fuse down in the middle row
Expert:  Kevin Bourcier replied 6 months ago.

this lists all the items that are protected by that fuse .

Customer: replied 6 months ago.
Ok so how do I find the problem that makes it instantly blow
Expert:  Kevin Bourcier replied 6 months ago.

one minute please .

Expert:  Kevin Bourcier replied 6 months ago.

have you tried to disconnect the brake pressure switch ?

Customer: replied 6 months ago.
that's the one up the brake pedal arm correct?
Expert:  Kevin Bourcier replied 6 months ago.

no that is only the electric brake light switch . the pressure switch is usually on the master cylinder or the brake line near the master cylinder .

Customer: replied 6 months ago.
Oh yes I've disconnected both of those
Expert:  Kevin Bourcier replied 6 months ago.

try also unplugging the ABS Control module on the firewall

Expert:  Kevin Bourcier replied 6 months ago.

how/when did this start ? any other work done recently on the truck ?

Customer: replied 6 months ago.
This has been going on for a few months, took it to a shop twice for it to be fixed and Monday the fuse blew, and continues to blow before I can seat it
Customer: replied 6 months ago.
I'm having trouble finding the abs control module
Expert:  Kevin Bourcier replied 6 months ago.

refer to # 6 in the illustration for the ABS module

Expert:  Kevin Bourcier replied 6 months ago.

does your truck have an adjustable brake pedal ?

Customer: replied 6 months ago.
I don't think so and I still can't find the control module
Expert:  Kevin Bourcier replied 6 months ago.

okay so we have a 1998 Ford F150 XLT 4X4 ? correct ?

Customer: replied 6 months ago.
Expert:  Kevin Bourcier replied 6 months ago.

refer to the description , it is in the dash inside the vehicle

Customer: replied 6 months ago.
I have to pull the dash apart then?
Expert:  Kevin Bourcier replied 6 months ago.

the fuse that is blowing is protecting the ABS control module . The easiest way to fault it as the problem/cause or rule it out is to disconnect it . Did you have the vehicle scanned to check for DTC's related to the ABS system ?

Customer: replied 6 months ago.
No I didn't, but now I can't move it
Expert:  Kevin Bourcier replied 6 months ago.

you say the shifter is locked in park ?

Expert:  Kevin Bourcier replied 6 months ago.

did you reconnect the brake switch at the brake pedal ?

Customer: replied 6 months ago.
it is
Expert:  Kevin Bourcier replied 6 months ago.

fuse #6 is for the shift lock actuator . have you checked it ?

Customer: replied 6 months ago.
13 is the only fuse I have had any problems with, and everytime it blows I can't shift and have no brake lights
Customer: replied 6 months ago.
Thanks anyways, really feel like you got 28 dollars for nothing. You've told me incorrect things since we started, so I'll figure it out myself, thanks for ripping me off
Expert:  Kevin Bourcier replied 6 months ago.

the wiring diagram and fuse diagrams do not indicate that that should occur . Have you tried removing all your brake light bulbs and do you ahve a trailer plug ?

Expert:  Kevin Bourcier replied 6 months ago.

you do not need to accept the answer . * have a trailer plug ?

Expert:  Kevin Bourcier replied 6 months ago.

I am here to help you and I am not suggesting that we have concluded this effort to resolve your issue .

Expert:  Kevin Bourcier replied 6 months ago.

I do want to help you to solve this .

Expert:  Kevin Bourcier replied 6 months ago.

sir ?

Expert:  Kevin Bourcier replied 6 months ago.

It is absolutely NOT my desire or intention to give you incorrect information sir . You have a bit of an unusual electrical fault with your vehicle and I am fully prepared to work through this with you . I am a licensed , certified automotive electrician with 40 years of experience and I am sure that I can assist you with this issue .

Expert:  Kevin Bourcier replied 6 months ago.

I am fully prepared to continue with you . Did you try disconnecting /removing your brake light bulbs ? and do you have a trailer connector at the back of your truck or a trailer brake controller in the cab ?