The cruise control worked fine the last time I used it. Now it won't engage. Also, the tach seems to register high rpms. This is on a 97 GMC Jimmy. I had a problem a few weeks back with what I was told was a speed sensor on one of the wheels. I was told to pull the fuse for the abs brakes, and this took care of the problem, but now I have other problems.
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Re: the cruise control just quit
By removing the ABS brake fuse you are disabling other components as well. The ABS fuse supplies voltage to the brake switch that tells the ECM and ABS module the the brake has been applied. If neither of the modules can see the brake switch the cruise control will be electrically disabled. You need to reinstall the fuse.
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certainly sounds suspect
As a point of interest, any parts removed are yours by law and have to be given back to you
so ask for the old parts and have them checked by an accredited auto electrician
the cruise control is operated by several sensors and if any one is not operational the control will not work
1-- vehicle speed sensor (VSS)
2--engine rpms system
3-- ( if manual) clutch sensor
4-- brake sensor
one button is working but the other side (set button ) is controlled by the VSS, brake (clutch) sensors and the ecm or RPM system
cruise controls will not engage under certain speeds or RPMS what all that means is that if the road speed is below a set point, engine rpms are below a point or VSS is faulty , the cruise control will not engage until those conditions are exceed ,or will disengage if conditions fall below the set points b
cruise controls are governed by 5 settings and sensors
one is engine rpms
vehicle road speed ,( manual transmission will not activate under 20 klms /hr
brake pedal switch
clutch pedal switch ( VSS if auto)
off/on switch control
any one of these not lined up will not allow the cruise control to work
on my 98 eldo the cruise control clips to a bracket if it has come undone the cruise might say it has engaged it cant engage. If the plastic piece on the cruise cable has broke use several zip ties to hold cable in place' Make sure it holds it in place proberly or idle will be to high. look under hood driver side there will be 2 cables. 1 eccelarator. 1 cruise controll
My 2001 Lincoln ls cruise control will not work. Put in a new clockspring and that did not fix it. radio controls and horn work but the air bag light stays on continually after starting. The lights on the cruise side will go on an off -I have bought that part to replace but don't want to put on if that is not the problem.
The reason any cruise control will not stay engaged is cause by 2 things.
1. Brake light switch. Check to see if your brake lights are coming on when your driving.... i.e have some one follow you while driving without the brake on.
2. Loss of speed sensor data to the control module. The speed sensor on an automatic transission car is located on somewhere the drive train / shaft. On a vehicle with a standard transmission the engine tach signal is used. (also unsed on automatic w/Over drive) If you do not see a tach reading on the instrument cluster I would suspect a tach sensor problem.
Troubleshooting needs to be in these 2 areas. As far as a source for schematics. Clymer and Haynes are 2 of many after market repair manuals.
Possible speed sensor. I know the speed sensors are a problem with hondas. A new speed sensor is about $200 and can be easily replaced. It bolts to the top of the transmission on the firewall side. Do NOT buy an e-bay one. They are only about $30 but are junk