Looking for someone with a Roadmaster chassis around 2008

[Looking for someone with a Roadmaster chassis around 2008]

Thanks again. I'll check the electrical connection for corrosion this evening and if I feel brave I'll remove the sensor.

[Looking for someone with a Roadmaster chassis around 2008]

Thank you jleamont.  If the differential pressure sensor is bad would the warning light come on intermittently?  And the light goes off when I hit a bump and may not come back on for a couple of hundred miles. Should I remove the differential pressure sensor and clean it?  Can you tell me where it would be located on the ISL 400?  I appreciate your help.

Steve

[Looking for someone with a Roadmaster chassis around 2008]

Thanks everyone. I found a place to read the codes. There was a code that showed up in the history. 129 times. I can't remember the code number but it said 5 volt went low. Then it listed accelerator position sensor, differential pressure sensor, after treatment diesel particulate filter, or 5 volt power supply from ECM. I can't find any wires going to the differential. The accelerator position sensor had a screw missing that mounted the sensor to the accelerator. I replaced the screw.  And I'm not sure what is meant by the after treatment diesel particulate filter. A dust cap over the brake assembly in the picture makes sense.  While I was under the coach I happened to see where 3 wires (a blue, yellow, and white) were chewed up by one of the slide out gear teeth. I repaired those wires and zip tied them away from the gear. I guess it's time for another test drive.

[Looking for someone with a Roadmaster chassis around 2008]

Thank you corkey05. I was hoping something was missing and it solve my warning light issue.

Thanks again,

Steve

[Looking for someone with a Roadmaster chassis around 2008]

I've been chasing an intermittent "warning" light on the dash of my 2008 Holiday Rambler Endeavor. I was looking behind the dash for a loose connection and saw the brake pedal assembly appears to have something missing. I'll attach a picture. Is there supposed to be a switch here that the center pin would actuate?

Steve

[Warning light on 2008 Holiday Rambler Endeavor]

Thanks Brett, I have been reading online about the ABS sensors. I think the rain is supposed to be over this afternoon for a few days. So maybe I can crawl under the coach. Also do you have any experience with code readers for these motorhomes? I don't think it would be worth it for me to spend thousands of dollars, but if the cheaper ones are any good, I think I would like to invest in one.

Steve

[Warning light on 2008 Holiday Rambler Endeavor]

Thanks jleamont.  It's odd that the light will go out when I hit a bump. I drove probably 200 miles last Saturday without seeing the light come on at all. I guess the next step is to take it somewhere and have the codes checked.

[Warning light on 2008 Holiday Rambler Endeavor]

Thanks Brett.  I have had several switches all through the coach that haven't worked. All have been issues with ground wires. Since my warning light goes out when I hit a bump in the road, do you think I may have another ground wire issue somewhere? It's funny the light on the dash only says Warning with no other indication.  Thanks again.

[Warning light on 2008 Holiday Rambler Endeavor]

Thanks wolfe10. I appreciate your help. When I did the Allison test, I pushed the up and down arrows twice. It brought up d1 -- --. Then I pushed the mode button and it went to d2 -- --. I continued pushing the mode button through to d5 -- --.  So I should be good right?

[Warning light on 2008 Holiday Rambler Endeavor]

Thanks Manholt, I'll look that up in my manual.

[Warning light on 2008 Holiday Rambler Endeavor]

If I did the transmission diagnostic test correctly, there were no codes for d1, d2, d3, d4, or d5. It was raining here so I didn't get a chance to look at ABS wiring or resistance  checks on the sensors. Always tomorrow. Yes, WILDBILL308 that was the Cummins site I went to, then logged in with user name and password.  Thanks everyone.

[Warning light on 2008 Holiday Rambler Endeavor]

I went to the Cummins site and put in my serial number then went to data plate. It has engine build date is June 25, 2007.  Does that help?

[Warning light on 2008 Holiday Rambler Endeavor]

If I remember right, the build date was August of 2007.  It must have sat on a lot somewhere for over a year. The first time it was purchased was May of 2009. Either because of the problems of 2008 or because the shorter coach was not desirable.

[Warning light on 2008 Holiday Rambler Endeavor]

I just saw online how to check the transmission for diagnostic codes. I'll try that this afternoon.

Thanks

[Warning light on 2008 Holiday Rambler Endeavor]

 Thanks for all the replies.

It just says warning on the very left of the dash. I do not know if the Allison transmission was ever serviced. According to the keypad test the transmission fluid is not low. The coach has a little over 55,000 miles. It has about 3000 miles and 5 months since it was serviced according to the previous owner. Is there any test to check the ABS system?

Thanks again.

[Warning light on 2008 Holiday Rambler Endeavor]

We recently purchased a 2008 Holiday Rambler Endeavor on the Roadmaster rr8r chassis with a Cummins ISL 400 and Allison transmission. This is our 3rd motorhome but our first diesel pusher. On a trip last week we had a Warning light on the dash to come on intermittently.  No other light comes on and there is no audible warning. Seems to come on when I tap the brakes on a downhill stretch. It will stay on until I hit a bump in the road. If I am at a red light when the Warning light is on the transmission seems to delay shifting out of 1st gear. If I am driving along and the warning light is on and I let off of the accelerator it feels like the transmission downshifts to a lower gear. When it is off everything seems OK. It may go a couple of hundred miles between the light coming on. I have checked all fluids that I know of and done the air brake system test. The previous owner told me the coach was serviced last October.  Any ideas would be appreciated.