Cruise control surging fixed - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars

xafalcon · 10-19-2002, 20:00

I have been trying to track down a surge problem with my cruise control in an EB Fairmont Ghia. I tried pulling the control unit (behind window washer water bottle) apart to lubriacte the valves, but only ended up breaking the unit. The replacement control unit had just the same surging the previous unit did. I tracked the source down to the rubber hosing elbows leaking vacuum. My cruise control now operates perfectly. Hopefully this information will be useful for some others.

Cheers
Tris

MightyEFGhia · 10-20-2002, 05:21

You couldnt give a better description of where to find that? Because my cruise control surges when I am trying to set it, some times i hold it n it does nothing, then it do it again n it wil surge heaps.

xafalcon · 10-20-2002, 21:51

My car is an EB Fairmont Ghia 5.0L, so I can only describe where the "bits" are located on that vehicle. I think EA - ED is all the same, but beyond that I'm unsure. Into it.

Behind the windscreen washer bottle is a vacuum pump and motor secured by 3 studs. You'll see them just to the left of the bonnet strut. Take the washer bottle out, then the vacuum pump. The leaking elbow on mine was on the black nipple. joining the vacuum pump to the vacuum hose that runs across to the other side of the engine compartment.

On the drivers side, in exactly the same location (but other side of the engine compartment) is the vacuum servo thing that actually pulls the throttle open and closed. It does come out past the brake master cylinder with some effort. It has the same elbow as the vacuum pump motor, and may also leak.

Finally, on the brake pedal under the dash is the brake light switch. This also has a vacuum connection and an elbow. Maybe check this as well?

Also sounds like your bottons need a clean, or the contacts from the steering wheel to the wiring loom. The steering wheel needs to be removed to do this. Do a search of past posts, I have seen detailed descriptions but haven't done this myself.

Good luck
Tris

Moran · 11-01-2003, 02:48

Quote:

Originally Posted by xafalcon

My car is an EB Fairmont Ghia 5.0L, so I can only describe where the "bits" are located on that vehicle. I think EA - ED is all the same, but beyond that I'm unsure. Into it.

Behind the windscreen washer bottle is a vacuum pump and motor secured by 3 studs. You'll see them just to the left of the bonnet strut. Take the washer bottle out, then the vacuum pump. The leaking elbow on mine was on the black nipple. joining the vacuum pump to the vacuum hose that runs across to the other side of the engine compartment.

On the drivers side, in exactly the same location (but other side of the engine compartment) is the vacuum servo thing that actually pulls the throttle open and closed. It does come out past the brake master cylinder with some effort. It has the same elbow as the vacuum pump motor, and may also leak.

Finally, on the brake pedal under the dash is the brake light switch. This also has a vacuum connection and an elbow. Maybe check this as well?

Also sounds like your bottons need a clean, or the contacts from the steering wheel to the wiring loom. The steering wheel needs to be removed to do this. Do a search of past posts, I have seen detailed descriptions but haven't done this myself.

Good luck
Tris

In the six's the vacume actuator is on the drivers side near the brake booster