Stock cruise control ?s

[4WDKC]

Who has one that works?

 

[1987 GMC Jimmy]

I do and use it very frequently. Whatcha got?

 

[4WDKC]

Mine doesnt work when I press on the side with the rod I can hear the air rushing out.. is this supposed to happen or is the diaphragm inside damaged?

 

[1987 GMC Jimmy]

Mine doesnt work when I press on the side with the rod I can hear the air rushing out.. is this supposed to happen or is the diaphragm inside damaged?

Just went and played with my servo for a little bit. I don't hear a whoosh like air's rushing out, but I can hear like a suppressed rushing of air inside the servo. I also got my Mityvac and pumped up the main line (the little one), and it held vacuum so maybe you could try that. How's the vacuum accumulator look (no cracks), and do you have a good check valve coming off the intake? I know that it was out on my car when I first got it, and the slide switch on the multifunction stalk was broken, which I discovered by probing a certain pin on the servo connector with a test light. I'll see if I can find the troubleshooting chart that I used before.

 

[Honky Kong jr]

Just went and played with my servo for a little bit.

We don't really need to know what you do in private and your pet name for it.....

 

[1987 GMC Jimmy]

Ahh... I walked right into that one.

 

[4WDKC]

It doesn't look damaged from the front, can't see the back and not sure on the valve. I know the switch moves like its supposed to not sure about it actually functioning correctly though.

 

[1987 GMC Jimmy]

Here's what I used to diagnose mine. There's a cruise control troubleshooting sticky on here, too, I think.

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[oldman]

anyone have a cruise control setup they want to get rid of? Im looking for one for my 85 silverado