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Old 05-16-2007, 12:50 AM
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Join Date: Apr 2007
Posts: 10
91 300D High Performance Cruise Control Switch?



Ok first the linkage is adjusted so the pedal gives full throttle at the pump with the foot on the pedal I can not move the linkage at the pump any. Now with that said when I hit the cruise control button in accel mode if feels like you turned on the juice. I mean it’s a different car and I don’t understand. It does not work until I am at or over 20 mph and at anytime if I go wide open throttle at any speed and hit the cruise control switch wow. I mean is there a secret propane tank on my car somewhere hooked up the cruise control switch? I will watch the boost gauge tomorrow and see what happens but I know the linkage is not moving. Any ideas would be great Thank you.

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Old 05-16-2007, 02:16 PM
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Join Date: Apr 2007
Posts: 10
found it

The Throttle position micro switch mounted throttle bracket is bad. When you push the cruise button in accel it by-passes that circuit for around 4 seconds and that is why it runs so good. Who knew the Cruise control module interfaced with the ecm.

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