My 78 280Z went into cruise control mode on the interstate this morning, throttle stayed open with foot off the gas.

When I got home I found a spring that had rusted and broken in half. I am going to call this the throttle return spring.

It is about three inches long and is a coil spring with a short loop on the bottom and a longer one on the top. Does anyone

know where I can find a replacement spring? Is the design of this spring important, or will anything that returns the

throttle back to idle be adequate?

Thanks.

I have this same issues except my spring is still intact, I've been trying to find a replacement, but no luck yet.

Most auto parts stores have an assortment of springs. Take the pieces with you and try to match it up. Anything close should work. Make sure it has enough tension to close the throttle quickly without being so stiff your foot will get tired easily.

Try to get 2 soft springs that together are about the same as the old one. If possible get one that will fit inside the other. Connect them both where the old one was. This will help prevent a disaster since it is unlikley both would fail at the same time.