Cruise control can't keep up
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Cruise control can't keep up
I have a '88 Econoline with a piggy-back style cruise control unit (attached to the turn signal..see link for pic)
http://www.carparts.com/MICROPROCESS...=10618-2001600
I suspect a vaccume leak since I feel the pedal go down but not enough to maintain speed.
My van will loose speed once i hit SET.
if i hold ACCEL it can amost keep the speed (hint hint)
Have a 2000 mile treck ahead of me... hope someone can tell me where to dig
THANKS!
http://www.carparts.com/MICROPROCESS...=10618-2001600
I suspect a vaccume leak since I feel the pedal go down but not enough to maintain speed.
My van will loose speed once i hit SET.
if i hold ACCEL it can amost keep the speed (hint hint)
Have a 2000 mile treck ahead of me... hope someone can tell me where to dig
THANKS!
Last edited by MadCaroler; May 15, 2010 at 07:13 AM. Reason: Improved link to show cruise control switch
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From: Virginia
Have you looked under the hood at the throttle cable system? A lot of the aftermarket cruise actuators were electric servo motors, not the vacuum type like the factory liked to use.
If you can find out the setup, even if it's vacuum, I would compress the actuator as much as it will go, and see if the throttle is wide open. It may just be a matter of a linkage adjustment, if the cruise is fully open, but the throttle is not.
If you can find out the setup, even if it's vacuum, I would compress the actuator as much as it will go, and see if the throttle is wide open. It may just be a matter of a linkage adjustment, if the cruise is fully open, but the throttle is not.
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Thanks Dave. I don't think its a matter of linkage adjustment. I confirmed it IS a vaccume system.
If I hold ACCEL when i pick a speed it can almost keep up....
Suggesting it doesnt have the power (or vaccume) to hold the pedal down.
I'd like to know where the module \ actuator is usually attached.
If I hold ACCEL when i pick a speed it can almost keep up....
Suggesting it doesnt have the power (or vaccume) to hold the pedal down.
I'd like to know where the module \ actuator is usually attached.
Hotshot
Joined: Oct 2002
Posts: 18,488
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From: The Big, Oregon
Follow the cable from the throttle, and you'll find the actuator.
Vacuum cruise control is kinda lame unless you have a fair bit of extra power. Asyou hit the throttle, you have less vacuum. I had a Subaru turbo that would produce boost at highway speeds, needless to say the cruise didn't work hardly at all.
Vacuum cruise control is kinda lame unless you have a fair bit of extra power. Asyou hit the throttle, you have less vacuum. I had a Subaru turbo that would produce boost at highway speeds, needless to say the cruise didn't work hardly at all.
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SOLVED!
Thanks to everyone who posted. I've found the problem....
The cable from the actuator was damaged; the actuator was next to the driver-side battery; the first 7 inches of cable from the actuator went under the battery plate and was damaged by battery acid; the jacket of the cable was totally gone so when the actuator pulled the whole cable moved.
I've since opened the actuator, cut the fouled end & am re-attaching the cable into the unit.
Thanks again!
The cable from the actuator was damaged; the actuator was next to the driver-side battery; the first 7 inches of cable from the actuator went under the battery plate and was damaged by battery acid; the jacket of the cable was totally gone so when the actuator pulled the whole cable moved.
I've since opened the actuator, cut the fouled end & am re-attaching the cable into the unit.
Thanks again!
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