Cruise Control surging
 

My search didn't reveal anything so here goes.

For a long time I had no cruise control. I didn't find anything obvious, including the vacuum hose at the actuator. The cruise light woudn't stay lit unless I hit it about 3 times or so but the CC wouldn't activate after toggling SET.

On a recent road trip, I was bored and started to play with the CC again. After a few times, the Cruise light stayed lit and I pushed the SET. Whoa, :eek: she's BACK! I have cruise control once again :confused:

After driving for a while with the CC set, it felt like the vehicle was surging ever so slightly. I didn't see the RPM or MPH fluctuate wildly or anything but it "felt" like it was surging.

Has anyone experienced the surging? Also, any idea as to why my CC is back? Even today I have to press the CC button multiple times in order to stay engaged.

Thanks for any input.

Ali
'92 LSL
105k miles

I got the surging from the cruise control, but me cruise light comes on ever time I turn it on. I have not had the time to check all of the lines and connections yet.

Ever since my 5-speed swap was done, I also have the very slight surging with the cruise control. Makes me seasick! I suspect its one of the vacuum lines.

did you check to see if the cruise control cable thats right next to the gas cable is snug and isnt loose cuz if theres slack it might take a while to get the cruise to work, but I dont really know about surging.

I've had the surging with the 4EAT and the 5MT. Several people have noticed this.

As for the button...the more you use it the better it gets. :)

Not a loose cruise control cable in my case.

Torq converter?

In my case I don't think its the torq converter. because if I hold the gas steady there is no surging. So I think its some thing in the cruise control.

No torque converter in the 5-speed cars. :-))

i think this could just be a "feature" of our cruise control in the SVX. Mine does the same thing. Very subtle surging, but don't really notice the Tach waver.

:eek: seems to be somewhat of an universal thing! I won't worry about it too much then. I'm just happy that it's back, kinda like lost friend! I'll check the cable adjustment just to make sure.

Thanks for the input.

Ali

My car didn't do it before the 5-speed swap, so I don't think it was meant to surge. I think there is definitely a problem somewhere in the mechanism or the vacuum line. I should probably take some time and figure it out because I really enjoy being able to use the cruise control on long trips.

Mine surges too. Always has. I think it's the anti-matter pulse drive kicking in.

My cruise is rock solid, but I sometimes get a barely noticable surging sensation (cruise off) between 40-60 MPH. No tach fluctuation, gear searching, TC locking/unlocking nor out-of-balance issues; just a seat-of-the-pants sort of gentle oscillation. With or without cruise, I wonder if it's just a ECU/intake/fuel delivery quirk.

dcb