cruise control wont work! amp location on my 95?

[theboneskes]

where is the cruise control amp located? My cruise on my 95 doesnt work, the fuses are good and I tested the switches on the sterring wheel and they are good...Where is the amp located? I have my chilton book to diagnose the wires and what they should read, but cant find it?

Is there anything else I should check to figure out the problem? Are there any common problems? When I am driving the car and turn on the crusie should there be a dash light that comes on? Any help would be appriciated!

 

[SHOZ123]

Might be the cable is off the TB or broke. There should be two throttle cables. Follow one back to the CC servo is.

 

[theboneskes]

Cable is good....

I checked the two cable on the throttle body, they are both good...thanks!

 

[projectSHO89]

Need to know if your 95 is a manual or automatic. The speed control crcuits are different.

 

[theboneskes]

my SHO is a MTX... I read in my chilton that the cruise control "amp" should be checked, but dont know where it is located... I looked at the servo(where the speedo cable goes), it looks ok but dont know how to test it...

 

[rubydist]

so you tested resistance in the switches on the steering wheel and they are in spec?

the mtx cruise control uses vacuum to run the servo, so a common issue is a bad vac hose that allows the vacuum to leak off and not pull the servo to the demanded location.

the other common issue is the vss is bad - this can usually be confirmed quickly by noting if the idle stays up at "fast idle" of around 1100 rpm as you coast to a stop and only drops down to the "regular idle" of 700ish after you have gotten below 5 mph. if it does not do that, you likely have a bad vss.

 

[projectSHO89]

On a 94 MTX, the function of the speed control amplifier is built into the PCM. The Chilton's is not providing the correct information for you.

 

[dcssho]

My 94 mtx cruise was also not working. I found the vacuum line that runs under the drivers side dash had gotten a hole rubbed in it from the steering column. Guess the line got shifted over time and then came in contact with the steering column. I couldn't find anything else wrong with mine either until I found it accidentally when I was removing an alarm system that the previous owner had put in.
Check yours its an easy fix if thats it. Good luck.

 

[beaudeen]

Follow the the cable from the throttle body down to
the vacuum actuator. Check the v-band that secures the 2 halves
together. Mine was rusted out and lost vacuum. Also check the
rubber lines for splits. Check from under the car.
I purchased a used one off of ebay for $30..swapped it out..all
working fine again. I also lost the cruise "on" dash light until I
replaced the old unit.
I see you are also in a Rust Belt area..!!!

 

[javve]

My 93 ATX never had a cruise on light on the dash, what years had the light and where is it located? My 95 MTX isn't working so I will be checking some things that are in this thread as well as making sure my parking brake is secured against the switch.