[V8] Re: PROBLEM #2: CRUISE CONTROL

[Dave Head]

Two prime areas to look at: vacuum switch on the brake pedal, bad stalk 
switches

Kneale Brownson wrote:

>If you have a copy of the shop manual, cruise is under "engine electrical" and
>it's section 27-120 for troubleshooting the cruise system. On the V8 there's a
>strong link between transmission electronics and the cruise.  
>
>Some general cruise info I've absorbed:  Common problems are associated with
>the brake/clutch switches (clutch doesn't apply here), leaky or broken vacuum
>lines, failed vacuum motors and their servos, etc.  On the V8, there's a rod
>connected to the throttle that passes through a plastic grommet that breaks
>from heat/age and can cause the rod to jam with the throttle open or closed. 
>So some V8s have had the rod disconnected.  You can buy a new grommet for a
>buck or so.  This linkage and the servo are accessed from beneath the air
>cleaner box.
>
>At 07:55 AM 6/24/2004 -0600, Brad Hartman wrote: 
>  
>
>>First of all, many thanks to Kneale Brownson for his suggestion to examine
>>the wiring going from the main cabin through the opening into the driver's
>>side door.  Lo and behold, two wires were completely severed, including the
>>power cable to the sun roof.  PROBLEM FIXED.
>>
>>Now, on to my cruise control.  Just doesn't work.  First of all, could there
>>be any wires that pass through the same opening as mentioned above that may
>>be cut (and I may have missed)?
>>
>>Any other places to start troubleshooting would be appreciated.
>>
>>Many thanks,
>>
>>Brad Hartman
>>1990 V8
>>    
>>
>
>
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