renix cruise control

[Ecomike]

Was just moving my Cruise servo out of the way to reach the rear valve cover bolts, and hiding behind and underneath the servo I find this lonley guy, a connector hang out..., LOL. Could this be why my Cruise has never worked?

LOL, that is a rhetorical question.

 

[90xj06]

i still haven't looked into mine. im thinking of fulling a spare servo apart to see how it works. and to see if i should be getting voltage places

 

[Ecomike]

Not sure if they can be pulled apart, but they have a vacuum port that can be tested to see if the internal diaphragm leaks. I suspect they have a DC stepper motor like the IAC has. I suspect mine was disconnected for high idle diagnostics, or because it was miss-behaving causing speed control issues? Or they just forgot to reconnect it after doing major work on it before I bought it.

Problem is how to safely test it for me.

 

[90xj06]

at least the renix has a vacuum dump valve so if the brake is pressed it releases the vacuum from the servo and kills the acceleration. i have 2 servos and neither seem to work so im thinking its an electrical thing. i was reading on a corvette servo an that one has 2 solenoids inside the servo on one should get power when just the switch is turned to on. so i figure if i pop it apart i can see what wires go to what.

it could be that the pots for the adjustments have gone south and it wont engage. or the speed sensor is shot.

 

[Ecomike]

You do know there is a yellow cruise computer under the drivers side dash right?

at least the renix has a vacuum dump valve so if the brake is pressed it releases the vacuum from the servo and kills the acceleration. i have 2 servos and neither seem to work so im thinking its an electrical thing. i was reading on a corvette servo an that one has 2 solenoids inside the servo on one should get power when just the switch is turned to on. so i figure if i pop it apart i can see what wires go to what.

it could be that the pots for the adjustments have gone south and it wont engage. or the speed sensor is shot.

 

[90xj06]

yes i swapped that from the spare parts bin to. still no go. checked all switch inputs but did not check speed input. i did swap out the speed sensor.

 

[Ecomike]

This is one of the items I have yet to see (IIRC) a manual or write up on ever?