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ANSWER Cruise control 850

posted by  KlausC on  Thu Jun 23 20:51 CST 2011
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last visit: Fri Oct 24 10:15 CST 2014
[RELATED]

You are looking in the wrong place. The vacuum for the CC is generated by a pump attached to the bottom of the battery tray. The line comes up from the battery tray and then follows the fender through the firewall and to the top of the brake pedal.

There is a switch on the pedal, two actually (one for the brake lights) that has a vacuum line going in and then continuing to the gas pedal. In most cases, it is the switch that is broken.

If you look carefully under the front of the battery tray, you should be just able to see the vacuum line where it attaches to the pump via an elbow. Pull the line off and/or elbow, and with the engine off, see if you can generate any vacuum by sucking on the line. If there is no vacuum, you need a new brake switch. If there is vacuum, there might be a problem with the on/off switch on the steering column stalk. Pulling a lot of vacuum will actually move the throttle cable.

Klaus

--
Always willing to listen, just not able to take direction.

This post has been marked as an answer to the original question.

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