Cruise Control kicks out on bumps

Maybe the brake light switch on your brake pedal needs adjusting?

I had a similar problem after replacing a power brake booster. Check for a switch activated by the brake pedal arm, it may be need to be moved closer.
Edit: FuelFunnel beat me to it.:B

Also search out how the cruise control is controlled. I have seen some with a target attached to the drive shaft and a speed sensor is mounted to a solid spot. If the drive shaft is moving away from the switch too far it looses contact and kicks out.

Another vote for the break light switch, had the same problem on my other RV.
Took some head scratching but finally figured it out.

Yours is a 2003 motor home built by Monaco on a W series chassis. If you look under the front end you will find that the steel used to mount your front cap on to the main frame has started to crack and fail. This is a known problem and can only be corrected by removing the light gauge 2x2 box and replacing it with a heavier gauge steel and proper welds. Monaco did have a repair procedure but that was before their reorganization. Now you will have to pay for the entire repair which should run somewhere between $1000-$1500 at a welding shop. I am sure that you have also noticed the front end being a little noisier with rattles and the steering column also moving a lot more with the bumps.
Be sure to check your generator bracket at the same time. That support has been known to fail and drop the generator.

rgatijnet1 wrote:
Yours is a 2003 motor home built by Monaco on a W series chassis. If you look under the front end you will find that the steel used to mount your front cap on to the main frame has started to crack and fail. This is a known problem and can only be corrected by removing the light gauge 2x2 box and replacing it with a heavier gauge steel and proper welds. Monaco did have a repair procedure but that was before their reorganization. Now you will have to pay for the entire repair which should run somewhere between $1000-$1500 at a welding shop. I am sure that you have also noticed the front end being a little noisier with rattles and the steering column also moving a lot more with the bumps.
Be sure to check your generator bracket at the same time. That support has been known to fail and drop the generator.

Wow and I thought I had brain freeze some times. You missed everything

donn0128 wrote:

rgatijnet1 wrote:
Yours is a 2003 motor home built by Monaco on a W series chassis. If you look under the front end you will find that the steel used to mount your front cap on to the main frame has started to crack and fail. This is a known problem and can only be corrected by removing the light gauge 2x2 box and replacing it with a heavier gauge steel and proper welds. Monaco did have a repair procedure but that was before their reorganization. Now you will have to pay for the entire repair which should run somewhere between $1000-$1500 at a welding shop. I am sure that you have also noticed the front end being a little noisier with rattles and the steering column also moving a lot more with the bumps.
Be sure to check your generator bracket at the same time. That support has been known to fail and drop the generator.

Wow and I thought I had brain freeze some times. You missed everything

WOW, you don't have a Monaco coach that has experienced this KNOWN problem on 2003-4 units. I have. :S

Monaco can supply the drawing to fabricate and correct the problem and then your cruise control will not kick off.

My guess is that the brake pedal has a weak return spring and allows the pedal to bounce when you hit a bump and the pedal will press the Brake light switch which in turn turns off the cruise control. It could also be a combination of a improperly adjusted switch clearance between the brake pedal and the switch and a weak or maladjusted return spring. To test the theory You can hold your foot under the brake pedal so it won't bounce and then drive and hit some bumps

rgatijnet1 wrote:

WOW, you don't have a Monaco coach that has experienced this KNOWN problem on 2003-4 units. I have. :S

Monaco can supply the drawing to fabricate and correct the problem and then your cruise control will not kick off.

Aw forget it, you just don't understand I guess.

donn0128 wrote:

rgatijnet1 wrote:

donn0128 wrote:

rgatijnet1 wrote:
Yours is a 2003 motor home built by Monaco on a W series chassis. If you look under the front end you will find that the steel used to mount your front cap on to the main frame has started to crack and fail. This is a known problem and can only be corrected by removing the light gauge 2x2 box and replacing it with a heavier gauge steel and proper welds. Monaco did have a repair procedure but that was before their reorganization. Now you will have to pay for the entire repair which should run somewhere between $1000-$1500 at a welding shop. I am sure that you have also noticed the front end being a little noisier with rattles and the steering column also moving a lot more with the bumps.
Be sure to check your generator bracket at the same time. That support has been known to fail and drop the generator.

Wow and I thought I had brain freeze some times. You missed everything

WOW, you don't have a Monaco coach that has experienced this KNOWN problem on 2003-4 units. I have. :S

Monaco can supply the drawing to fabricate and correct the problem and then your cruise control will not kick off.

You Still do not get it? The OP does not have a Monaco nor did he say anything about a front cap issue. His issue is cruise control on a HR/workhorse chassis Not Monaco.

In 2003, Holiday Rambler AKA HR was made by Monaco. Actually HR was bought by Monaco around 1996. The Admiral was built on a Workhorse chassis and the Monaco assembly line had some problems with the welds attaching the front end/cap to the chassis. After a short time, the welds would break and the steel would crack which made the front end shake quite a bit. This usually happened after 20,000-30,000 miles, depending on how rough the roads were. Unless corrected, it would get to the point where the steering wheel would shake and the cruise control would kick off with even a slight bump.