C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

not cruising

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Old Jul 29, 2008 | 11:15 PM
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Default not cruising

I have a 90 coupe with 104 k miles. My cruise is not operational. This has not been a problem as I do not get to take long road trips, but would be nice to have all systems fuctioning. Where should I start? I have checked fuses. All checked out fine and replaced defective fuses. Also, should there be a "door ajar" sound? I don't have it. Though I did hear it on a very cold morning, also resulting in no climate control. Later that day I started the car and had temp control but no door ajar alarm.......weird.
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Old Jul 29, 2008 | 11:30 PM
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Idle ok? Vacuum leaks affect cruise.
Brake lights work ok? Brake switch/cruise kill switch is integral on some, dedicated on others.
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Old Jul 30, 2008 | 12:22 AM
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I don't know if it would be this simple, but when I looked into mine (87), I found the ball chain, covered by the rubber boot had come apart. Reconnecting it gave my left foot much appreciated rest.
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Old Jul 30, 2008 | 01:47 AM
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I don't know if it would be this simple, but when I looked into mine (87), I found the ball chain, covered by the rubber boot had come apart.
Yesterday I decided to fix my inoperative cruize; upon taking the vac gauge, DMM and FSM down to the car I opened the hood to disconnect the cable before beginning troubleshooting only to find that the clip holding the cruize cable to the TB had fallen off...

Start by checking the obvious mechanical links, then go to vacuum and the brake switch. There is detailed cruize troubleshooting in the FSM electrical section.
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Old Aug 1, 2008 | 12:36 AM
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Originally Posted by schrade
Idle ok? Vacuum leaks affect cruise.
Brake lights work ok? Brake switch/cruise kill switch is integral on some, dedicated on others.
my brake lights are good and engine idles fine. i need to get the FSM. where is my best place to find one?
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Old Aug 1, 2008 | 02:58 PM
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Originally Posted by sharp90
my brake lights are good and engine idles fine. i need to get the FSM. where is my best place to find one?
Online auction sites. Make sure you get volume 2.

I got a buddy who was a service manager a Chevy dealer to sell me one for my '87.

If you can't get the SM to go for it, try the dealer's GM - with sales in the tank, they might go for it...
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Old Aug 1, 2008 | 03:32 PM
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Originally Posted by schrade
Brake switch/cruise kill switch is integral on some, dedicated on others.
Mine was non-functional as the kill switch was out of adjustment.
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