Cruise Control NOT WORKING!!

[19BigEddie89]

okay so the other day i was driving down the highway and decided to see if my control was working.. so i pressed the on button then pressed the set button, let go of the gas pedal and my speed decreased immediately.. i looked and everything seems to be hooked up.. i called over a friend and he said everything is there and seems to be hooked up.. is there anything im doing wrong? is there anything i should be looking for to make sure is there and working? is there any way to check and find what is wrong??

Thanks

 

[miesk5]

yo Ed,

If you have an 89;

Cruise (Speed) Control (Vacuum) "TRICKS OF THE TRADE" Troubleshooting TSB 90-25-12 by Ford for 86-91 Bronco, Aerostar, Econoline, Explorer, F-150, F-250, F-350, Ranger & cars Source: by Ford via miesk5 (Al) at Miesk5's Home Page of Big Bronco Links

Intermittent or Inoperative Speed Control Operation May Occur During Wet Weather Operation TSB 92-7-8 for 86-91 Bronco, Econoline, F-150, F-250, F-350 & Ranger, 91 Explorer, 86-90 Bronco II; "... This may be caused by a corroded connector at the servo..." Source: by Ford

Intermittent or inoperative speed control operation

may occur during wet weather operation. This may be caused by a corroded connector at the servo.

1. Disconnect the connector at the servo.

2. Blow dry the connector assembly with shop air.

3. Clean and inspect pins for corrosion.

4. Replace any damaged or corroded pins (D1AZ-14488-E).

5. Apply grease (F2AZ-19584-A) to both ends of the connector to prevent water entry.

6. Reconnect the connector at the servo.

Use this Electrical Grease (F8AZ-19G208-AA) to reduce the possibility of moisture corrosion at the pins, terminals, etc..

Wiring Diagram in 88.5-89 Source: by Reptillikus (Project 4D2, Kevin W) at SuperMotors.net



& just in case;

Testing Wiring with a Multi Meter, General; Opens, Short, Voltage & Voltage Drop, Continuity & Diodes Source: by freeautomechanic.com

 

[19BigEddie89]

yo Ed,

If you have an 89;

Cruise (Speed) Control (Vacuum) "TRICKS OF THE TRADE" Troubleshooting TSB 90-25-12 by Ford for 86-91 Bronco, Aerostar, Econoline, Explorer, F-150, F-250, F-350, Ranger & cars Source: by Ford via miesk5 (Al) at Miesk5's Home Page of Big Bronco Links

Intermittent or Inoperative Speed Control Operation May Occur During Wet Weather Operation TSB 92-7-8 for 86-91 Bronco, Econoline, F-150, F-250, F-350 & Ranger, 91 Explorer, 86-90 Bronco II; "... This may be caused by a corroded connector at the servo..." Source: by Ford

Intermittent or inoperative speed control operation

may occur during wet weather operation. This may be caused by a corroded connector at the servo.

1. Disconnect the connector at the servo.

2. Blow dry the connector assembly with shop air.

3. Clean and inspect pins for corrosion.

4. Replace any damaged or corroded pins (D1AZ-14488-E).

5. Apply grease (F2AZ-19584-A) to both ends of the connector to prevent water entry.

6. Reconnect the connector at the servo.

Use this Electrical Grease (F8AZ-19G208-AA) to reduce the possibility of moisture corrosion at the pins, terminals, etc..

Wiring Diagram in 88.5-89 Source: by Reptillikus (Project 4D2, Kevin W) at SuperMotors.net



& just in case;

Testing Wiring with a Multi Meter, General; Opens, Short, Voltage & Voltage Drop, Continuity & Diodes Source: by freeautomechanic.com

Thank you so much for all the help. I'm gonna try it this weekend or asap.

 

[19BigEddie89]

yo Ed,

If you have an 89;

Cruise (Speed) Control (Vacuum) "TRICKS OF THE TRADE" Troubleshooting TSB 90-25-12 by Ford for 86-91 Bronco, Aerostar, Econoline, Explorer, F-150, F-250, F-350, Ranger & cars Source: by Ford via miesk5 (Al) at Miesk5's Home Page of Big Bronco Links

Intermittent or Inoperative Speed Control Operation May Occur During Wet Weather Operation TSB 92-7-8 for 86-91 Bronco, Econoline, F-150, F-250, F-350 & Ranger, 91 Explorer, 86-90 Bronco II; "... This may be caused by a corroded connector at the servo..." Source: by Ford

Intermittent or inoperative speed control operation

may occur during wet weather operation. This may be caused by a corroded connector at the servo.

1. Disconnect the connector at the servo.

2. Blow dry the connector assembly with shop air.

3. Clean and inspect pins for corrosion.

4. Replace any damaged or corroded pins (D1AZ-14488-E).

5. Apply grease (F2AZ-19584-A) to both ends of the connector to prevent water entry.

6. Reconnect the connector at the servo.

Use this Electrical Grease (F8AZ-19G208-AA) to reduce the possibility of moisture corrosion at the pins, terminals, etc..

Wiring Diagram in 88.5-89 Source: by Reptillikus (Project 4D2, Kevin W) at SuperMotors.net



& just in case;

Testing Wiring with a Multi Meter, General; Opens, Short, Voltage & Voltage Drop, Continuity & Diodes Source: by freeautomechanic.com

Where would this servo be located?

 

[miesk5]

yo,

I found this the other day!

Speed Control - Coast And Acceleration Modes - Abnormal Operation In High Ambient Temperatures Article No.

89-3-4

PUBLICATION DATE: February 8, 1989

FORD

1986-89 All

LINCOLN-MERCURY

1986-89 All

LIGHT TRUCK

1986-89 All

ISSUE Abnormal speed control operation in the coast and acceleration modes may be caused by loss of electrical contact between the steering wheel slip rings and brush assembly. This condition usually occurs in high ambient temperatures when the steering wheel slip rings and brush assembly are warm.

ACTION Improve the electrical continuity of the steering wheel slip rings and brush assembly by applying a new service released grease on the contact area. Refer to the following procedure for service details.

Service Procedure

Remove the steering wheel. Refer to the appropriate Car or Light Truck Shop Manual for service details.

Clean the old grease from the steering slip rings and brush assembly contact areas.

Apply the new service released grease, (E8AZ-19590-A), on the steering wheel slip rings and brush assembly contact surfaces. This new grease can be identified by its bright orange/red color.

Reinstall steering wheel.

PART NUMBER PART NAME CLASS

E8AZ-19590-A Grease B

OTHER APPLICABLE ARTICLES: None

WARRANTY STATUS: Eligible Under Basic Warranty Coverage

LABOR ALLOWANCE

OPERATION DESCRIPTION TIME

890304A 0.4 Hr.

DEALER CODING

BASIC PART NO. CONDITION CODE

9C899 53

OASIS CODES: 2900

The servo in under hood near driver's side hood hinge

I don't have a good pic showing it except for this:

pic by Rock Auto;

http://info.rockauto.com/getimage/getimage.php?imagekey=320709&imageurl=http%3A//info.rockauto.com/SMP/CS2507_FULL.jpg

This is for an 89 4.9 by Chilton

http://content.chiltonsonline.com/content/images/8492/images/84926054.pdf

1.Disconnect the wiring at the servo.

2.Disconnect the adjuster from the accelerator cable.

3.Disconnect the vacuum line at the servo.

4.Remove the actuator cable-to-bracket *****.

5.Remove the pins and nuts retaining the servo to its mounting bracket and lift it out.

6.Installation is the reverse of removal.

Adjustments

1.Snap the molded cable retainer over the accelerator cable end fitting attached, to the throttle ball stud.

2.Remove the adjuster retainer clip, if installed, from the adjuster mounting tab.

3.Insert the speed control actuator cable adjuster mounting tab in the slot provided in the accelerator cable support bracket.

4.Pull the cable through the adjuster until a slight tension is felt without opening the throttle plate.

5.Insert the adjuster cable retainer clip slowly, until engagement is felt, then, push it downwards until it locks in position.

 

[19BigEddie89]

Thank you so much for all the help..