Have Ford Questions? Ask a Mechanic for Answers ASAP
Hello, my name is***** usually means the vacuum reservoir is cracked and leaking, if not add an additional reservoir which will take care of the problem assuming you have no vacuum leaks. Verify the vacuum supply to the controls on the Black (BK) hose is manifold vacuum and maintains that vacuum under load (should not drop below roughly 15" vacuum).If the vacuum does drop off, inspect all vacuum lines for any damage. Also locate the vacuum reservoir in the evaporator case and check for physical damage to the reservoir or poor hose connections there.If the vacuum supply to the controls is good, check each of the other colored hoses to make sure that they all pump up and hold vacuum. If any of the hoses do not hold vacuum, locate the vacuum actuator at the other end of that hose and check the actuator itself to verify it holds vacuum. If not, replace the actuator and retest.If the actuator in question holds vacuum when applied at the actuator, but not at the control panel, locate and repair the damage to the hose in between. The abs light usually means one of the front wheel speed sensors or rear axle speed sensor but you will need to check abs codes to know for sure. Most part stores will check codes for free. Let me know how it goes or if you have more questions, thanks.
The line that goes into firewall goes into vacuum reservoir, then splits off into the actuator. It can be checked from inside but you will have to pull out some of heater controls/dash to access. Let me know if you run into more questions, thanks.