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Suddenly after never giving a problem, the green light CRUISE turn on only the first time the feature is set on for a couple of seconds and then turn off and CRUISE doe snot work… Next time, the motor is started, the same issue.
It is a van 1999 Town & Country Limited 3.8 L. How it is possible to check it by myself? Is there a way to isolate the issue?
Thank you in advance
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[quote=”JoseGala” post=156891]Suddenly after never giving a problem, the green light CRUISE turn on only the first time the feature is set on for a couple of seconds and then turn off and CRUISE doe snot work… Next time, the motor is started, the same issue.
It is a van 1999 Town & Country Limited 3.8 L. How it is possible to check it by myself? Is there a way to isolate the issue?
Thank you in advance[/quote]Two questions, does the cruise control actually speed up the car for those few seconds the light is on?
And, are you saying the cruise after coming on for a few short seconds, will turn off and then refuse to turn on after that, unless you restart the engine?Hi DaCoder,
NO, the cruise control never speeds up the car even during those short circuits the light is on
YES, after turning on for few seconds becomes off and it doe snot engage again unless I restart the motor
Thank you[quote=”JoseGala” post=156957]Hi DaCoder,
NO, the cruise control never speeds up the car even during those short circuits the light is on
YES, after turning on for few seconds becomes off and it doe snot engage again unless I restart the motor
Thank you[/quote]Then in that case I would assume a mechanical failure, look into the engine compartment:
Highlighted in red is the throttle body, where the cruise control (or as Chrysler calls it, speed control) is connected to.
The basics on cruise control real quick, there is a speed sensor on your car, a computer, several switches, an actuator, and finally the throttle.
You click cruise control on, then the computer grabs the current speed, and saves that value.
Next it every once in a while checks your vehicle speed again and sends a certain amount of vacuum pressure (or lack thereof) to the actuator, which works (via a cable) the throttle, speeding up or slowing down your car.
The switches only interact with the computer, sending it slow down, speed up, cancel, resume, set, etc.Armed with this, I am guessing it has nothing to do with the switch, or the computer, but from the actuator to the throttle. However after searching for a bit I could not find a test for the actuator or speed control system. I found alot for the 2001 and up vans, just not older than that. Another member probably will know the testing procedure however.
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