Cruise Works Randomly - F-Series & SuperDuty Diesel Forums

Bigboytoys · 12-28-2011, 04:06 PM

I got an 08 F250 4X4 6.4 auto and the cruise is not working very well.

There are times it won't turn on/set, other times it works great, then it will just shut off all on it's own.

Where do I start?

sagebel · 12-28-2011, 06:36 PM

Are you seeing any issues with your speedometer? Any codes? ABS light? Watch the speedo when you don't have CC. If it is, the issue may be the rear axle speed sensor.

Bigboytoys · 12-28-2011, 06:53 PM

Nope, I'm not getting any hard or soft codes, no CEL and the speedo doesn't drop off like it lost the signal.

BIG JOE · 12-28-2011, 07:23 PM

Quote:

Originally Posted by Bigboytoys

Nope, I'm not getting any hard or soft codes, no CEL and the speedo doesn't drop off like it lost the signal.

My vote would be the Speed Sensor. (VSS), on the rear Dif.

Bigboytoys · 12-28-2011, 07:42 PM

Ok I'll have to set up the scanner to graph the VSS on the next run to town.

Tail_Gunner · 12-28-2011, 08:18 PM

My brake pedal switch was very touchy. Just bump it and the cruise would disengage.

Try holding the brake pedal up with your foot and see if the situation changes. It may be a bad/misadjusted brake pedal switch.

Bigboytoys · 12-28-2011, 08:21 PM

Ya I tried that, it made no difference.

95_stroker · 12-28-2011, 09:02 PM

Look for a bad ground on one of your tail lights.

Bigboytoys · 12-28-2011, 09:45 PM

Ok that's not one of the first places I would have looked.....

Bigboytoys · 01-04-2012, 08:39 PM

Well after spending the afternoon chasing down every connection to and from the tail lights and cruise I still had a the same problem. The issue was fixed by.... opening up the actual cruise switch and cleaning the contacts of coffee or cola or what ever was in there. Easy to do but unhappiness abounded!

12-28-2011, 04:06 PM	#1
Bigboytoys SDD Member Join Date: Nov 2008 Location: Manitoba, Canada Posts: 71 Thanks: 0 Thanked 3 Times in 3 Posts	Cruise Works Randomly I got an 08 F250 4X4 6.4 auto and the cruise is not working very well. There are times it won't turn on/set, other times it works great, then it will just shut off all on it's own. Where do I start? __________________ F250 6.4 Auto 4x4 Super Crew SB 2008 Air bagged rear B&W turn over ball Aftermarket bug bit grill ascents

12-28-2011, 06:36 PM	#2
sagebel Stock? Pfft! Join Date: Apr 2005 Location: Silverdale, WA Posts: 909 Thanks: 5 Thanked 27 Times in 27 Posts View Photos By: sagebel	Are you seeing any issues with your speedometer? Any codes? ABS light? Watch the speedo when you don't have CC. If it is, the issue may be the rear axle speed sensor. __________________ Light weight 2011 F-250 6.7 CCSB 4x4 in Sterling Grey Metallic Daily rider: 2010 Cannondale Quick 4

12-28-2011, 06:53 PM	#3
Bigboytoys SDD Member Join Date: Nov 2008 Location: Manitoba, Canada Posts: 71 Thanks: 0 Thanked 3 Times in 3 Posts	Nope, I'm not getting any hard or soft codes, no CEL and the speedo doesn't drop off like it lost the signal. __________________ F250 6.4 Auto 4x4 Super Crew SB 2008 Air bagged rear B&W turn over ball Aftermarket bug bit grill ascents

12-28-2011, 07:42 PM	#5
Bigboytoys SDD Member Join Date: Nov 2008 Location: Manitoba, Canada Posts: 71 Thanks: 0 Thanked 3 Times in 3 Posts	Ok I'll have to set up the scanner to graph the VSS on the next run to town. __________________ F250 6.4 Auto 4x4 Super Crew SB 2008 Air bagged rear B&W turn over ball Aftermarket bug bit grill ascents

12-28-2011, 08:18 PM	#6
Tail_Gunner CRJ & ERJ A&P Mech. Join Date: Apr 2005 Location: Da U.P. Posts: 1,915 Thanks: 97 Thanked 133 Times in 109 Posts View Photos By: Tail_Gunner	My brake pedal switch was very touchy. Just bump it and the cruise would disengage. Try holding the brake pedal up with your foot and see if the situation changes. It may be a bad/misadjusted brake pedal switch. __________________ Kent FAA certificated A&P mechanic. Graduate of NMU School of Aviation Maintenance Technology. Retired USAF MSgt (E-7) (09/74-10/94) B-52 Gunner/Flight Examiner, 3600+ Flight Hours B-52 Crew Chief Share holding owner Green Bay Packers!! NEW RIDE: 2011 GMC 2500HD DURAMAX/ ALLISON EC/SB, Leer truck cap, Luverne running boards, Rhino liner. WeatherTech floor mats, Remote Start, Edge Insight, backup camera and OEM fog lights. Engine is 100% stock (For now ) SOLD: F-250 early 99 4x4 SD SC longbed, 99.5 PCM, Stage 1 Single Shot Injectors, Dominator 66 turbo from Bean's, Adrenaline HPOP, 99.5+, 6.0 Intercooler, BTS Trans w/ V-10 trans cooelr, MBRP T-304 Stainless 4" exhaust, Ford Air Intake System, Coolant Filter, BD Exhaust Brake, BD TorqLoc, Dynatrac Hub Conversion, 285/75R16 tires. Tuned by Powerhungry Performance- Whisper mode, Fuel Sipper, 65hp Towing, 100 Performance, 120 Racing and a modified stock tune. Tail_gunner's Web shots

12-28-2011, 08:21 PM	#7
Bigboytoys SDD Member Join Date: Nov 2008 Location: Manitoba, Canada Posts: 71 Thanks: 0 Thanked 3 Times in 3 Posts	Ya I tried that, it made no difference. __________________ F250 6.4 Auto 4x4 Super Crew SB 2008 Air bagged rear B&W turn over ball Aftermarket bug bit grill ascents

12-28-2011, 09:02 PM	#8
95_stroker Jefe Join Date: Mar 2005 Location: Cora, Wy Posts: 6,795 Thanks: 38 Thanked 81 Times in 63 Posts View Photos By: 95_stroker	Look for a bad ground on one of your tail lights.

12-28-2011, 09:45 PM	#9
Bigboytoys SDD Member Join Date: Nov 2008 Location: Manitoba, Canada Posts: 71 Thanks: 0 Thanked 3 Times in 3 Posts	Ok that's not one of the first places I would have looked..... __________________ F250 6.4 Auto 4x4 Super Crew SB 2008 Air bagged rear B&W turn over ball Aftermarket bug bit grill ascents

01-04-2012, 08:39 PM	#10
Bigboytoys SDD Member Join Date: Nov 2008 Location: Manitoba, Canada Posts: 71 Thanks: 0 Thanked 3 Times in 3 Posts	Well after spending the afternoon chasing down every connection to and from the tail lights and cruise I still had a the same problem. The issue was fixed by.... opening up the actual cruise switch and cleaning the contacts of coffee or cola or what ever was in there. Easy to do but unhappiness abounded! __________________ F250 6.4 Auto 4x4 Super Crew SB 2008 Air bagged rear B&W turn over ball Aftermarket bug bit grill ascents

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode