How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Ron Your Own Question
Ron, ASE Certified Technician
Category: Ford
Satisfied Customers: 35857
Experience:  23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs
Type Your Ford Question Here...
Ron is online now
A new question is answered every 9 seconds

I have a1998 b4000. the front hub stopped engaging. Vacuum

Customer Question

Customer: Hello I have a1998 b4000. the front hub stopped engaging. Vacuum air operated. ***** *****`t see any hoses broken or cracked (only a quick visual though)
JA: Thanks. Can you give me any more details about your issue?
Customer: Hello Randy is my name. front hubs ***** *****`t engage which i switch from*****to four wheel drive
JA: OK got it. Last thing — JustAnswer charges a fee (generally around $28) to post your type of question to Ford Experts (you only pay if satisfied). There are a couple customers ahead of you. Are you willing to wait a bit?
Customer: k
JA: OK. Now I'm going to take you to a page to place a secure deposit with JustAnswer. Don't worry, this chat is saved. After that, we will finish helping you.
Submitted: 1 year ago.
Category: Ford
Expert:  Ron replied 1 year ago.

Hello and thank you for your question,

The problem you are having with the hubs not engaging can be caused by any one of the following,

  • Pulse Vacuum Hublock (PVH) Solenoid
  • Pulse Vacuum Hublock (PVH) Solenoid Connector
  • Pulse Vacuum Hublock (PVH) Vacuum Line
  • Wheel Hub
    With the leaking hubs being a very common cause. In order to determine which has failed you are going to need to do some testing. I have enclosed the test steps in the link below. Copy and paste the link to your browser to open and view the file.