Need help troubleshooting cruise control - TCCoA Forums
 
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post #1 of 6 (permalink) Old 12-08-2016, 07:07 AM Thread Starter
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Need help troubleshooting cruise control

1994 mark vIII cruise does not function. Where would you start? I've got an abs light and a random cel
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post #2 of 6 (permalink) Old 12-08-2016, 09:38 AM
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On both a Cougar and a Crown Vic, I have bypassed the brake light switch on the brake pedal. Works like a charm, and everything on the cruise control functions normally afterwards.

I first tried it with a thick paper clip in the connector to jump it, and once I found it worked, I used a snap lock connector to connect the two wires running to the connector.

You would think that you have to use the on/off switch to release the cruise, but tapping the brake still works! I can't explain it, but it works! It was first recommended by RobertP.

Al

97 T-Bird LX 4.6 - 80k miles
94 Supra TT Auto - street/strip car
04 CVPI- Brenda's car - 76k miles
Previous Fords:
95 T-Bird LX 4.6 - fully optioned, owned 15 years, 220k miles
96 Cougar XR-7 4.6- Brenda's car, owned 11 years, 187k miles
88 T-Bird 3.8 - first T-Bird, owned 5 years, 206k miles
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post #3 of 6 (permalink) Old 12-09-2016, 11:38 AM
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I believe the CC has two safety shut off features - one on the brake pedal and one hydraulic on the MC.

Glenn

1996 TB LX, 4.6, 120,000 miles, black with tan interior.
Dark tint and OEM "Sport" spoiler.
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post #4 of 6 (permalink) Old 12-27-2016, 07:11 AM Thread Starter
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do the brake lights still come on with the mastercylinder switch if the pedal is bypassed?
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post #5 of 6 (permalink) Old 01-03-2017, 08:01 AM
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Yes, everything works normal.

Al

97 T-Bird LX 4.6 - 80k miles
94 Supra TT Auto - street/strip car
04 CVPI- Brenda's car - 76k miles
Previous Fords:
95 T-Bird LX 4.6 - fully optioned, owned 15 years, 220k miles
96 Cougar XR-7 4.6- Brenda's car, owned 11 years, 187k miles
88 T-Bird 3.8 - first T-Bird, owned 5 years, 206k miles
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post #6 of 6 (permalink) Old 01-03-2017, 09:30 AM
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Years ago on a Pontiac Sunbird, my cruise wouldn't work. I had earlier been cleaning the car and removed some of the old padding & stuff around the brake pedal linkage... Turns out that prevented the brake pedal from being in the right position to allow the cruise to work.
I discovered, while driving, that if I pulled the brake pedal towards me with my foot, the cruise worked... Let it go, it plopped back down and cut out...

I put the foam back, problem solved.

Totally don't know if that is the case here, but can't hurt to check. While driving, just pull the brake pedal forward with your foot under it a little, see if that has any effect.

Just a thought
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