Re: The Next Issue to Troubleshoot Reply #50 – April 30, 2018, 09:36:57 pm Quote from: floridarandy – April 30, 2018, 06:24:31 pmOK, so these replies add additional questions:Brett - I have Biobar JF in the coach. Would a "kill dose" also lead to clogging the filter's I just replaced? if so, how long to change? How many changes would be required?NO, Biobar JF only kills the live algae, and prevents them from multiplying. Said another way, with the algaecide, you have limited the contaminants to those in the tank when you added the biocide instead of allowing them to multiply.Yes, your filters will have to remove the dead/existing contaminants. Quote Selected 1 Likes
Re: The Next Issue to Troubleshoot Reply #51 – May 02, 2018, 10:43:29 am UPDATE:After changing both fuel filters and wipin down engine bay I took coach for a ride on the interstate. Couldn't tell a dramatic difference in acceleration, but them I never really had much of an acceleration issue.After about 15 miles, however, I did get the check engine light again, briefly. And the same codes were shown on the VMSPC. It was also interesting that when I returned there was no evidence of leaks or splatters anywhere on the engine that I could find. I think I'll keep the appointment I have for Friday at Cummins in Fort Myers so they can look further into this fuel pressure delivery question. If it weren't for the fact that we were heading out for the next six months I'd be inclined to continue using it locally since the engine has never derated due to this issue. Quote Selected
Re: The Next Issue to Troubleshoot Reply #52 – May 02, 2018, 11:26:23 am Betting on a lift pump issue or possibly, an air leak/supply hose issue. Other guess would be a fuel solenoid sticking.Pierce Quote Selected 1 Likes
Re: The Next Issue to Troubleshoot Reply #53 – May 02, 2018, 12:19:34 pm Understand what derated means but not sure what derating has to do with a fuel problem? Quote Selected 1 Likes
Re: The Next Issue to Troubleshoot Reply #54 – May 02, 2018, 12:21:24 pm John, I guess I meant only that issue hasn't shut engine down or limits power...at least so far. Quote Selected
Re: The Next Issue to Troubleshoot Reply #55 – May 03, 2018, 09:10:16 pm Sometimes after treating fuel you might have to go through several fuel filter changes before it clears up. The filters will remove all the stuff that the treatments killed. Cheapest and easiest way to find out is to carry at least 3 sets of fuel filters with you, run several tanks of fuel through, and see what happens.We live full time in our coach and if needed there are Cummins shops around the country to go to . If no leaks, it might be you need to run all the contaminants out through the filters. Try the simple and least expensive things first.Best of luck Quote Selected 2 Likes
Re: The Next Issue to Troubleshoot Reply #56 – May 04, 2018, 07:54:19 am Just pulled in to Cummins Ft Myers. And, NO codes on the 60 mile trip down. With LUCK it will turn out to be clogged filters (now replaced) helped along by initial clean-up dose of Diesel Kleen. Nice small Cummins facility here. Friendly folks. Will post results. Quote Selected
Fuel Pressure Delivery Code - The Next Issue to Troubleshoot Reply #57 – May 04, 2018, 08:31:56 am Interim update. Tech ran diagnostics and told me that Cummins periodically provides updates to ECU programming to address issues that can be managed through these updates. Our 2000 coach last had the ECU update in 2001 so he applied a cumulative update as a first step. I know NOTHING about this stuff, but it sounds like Windows updates on a computer. Running engine now and tech will take it on a drive to try and load the engine to see result. Not a conclusion but an interesting interim update. Quote Selected
Re: The Next Issue to Troubleshoot Reply #58 – May 04, 2018, 08:50:14 am Randy,I always ask what the updates are addressing. In many cases, they are for emissions only. And, could lower HP or MPG. Let's face it, the three are a balancing act. Yes, it takes a savvy tech who has kept up with factory bulletins to know. Quote Selected 1 Likes
Re: The Next Issue to Troubleshoot Reply #59 – May 04, 2018, 09:01:03 am Another update...I've been told that the fault codes resolved by the ECM update deal with "fuel metering"...presumably this caused what I "felt" in the hesitation and the resulting "fuel pressure delivery" code shown on the VMSpc. Quote Selected
Re: The Next Issue to Troubleshoot Reply #60 – May 04, 2018, 11:41:29 am Cummins states ECM update fixes a known random issue related to Caps Pump fuel pressure sender which can send random signals regarding fuel pressure....too hi...too low, thus triggering Check Engine light. Said there were lots and lots of these codes when they ran diagnostics. Sounds good....not sure it feels as good as a known "broken" part. But, certainly less expensive. Quote Selected 1 Likes
Re: The Next Issue to Troubleshoot Reply #61 – May 04, 2018, 03:26:13 pm Randy-let's hope that is all it is. I still recomend taking 3 sets of fuel filters on the road with you- never know when you might need them.Cya down the road Quote Selected 1 Likes
Re: The Next Issue to Troubleshoot Reply #62 – May 04, 2018, 09:00:16 pm Have 4 of each and considering changing all 4 before we leave on Friday (2 ea engine and gen). Quote Selected 1 Likes
Re: The Next Issue to Troubleshoot Reply #63 – May 04, 2018, 09:15:59 pm Quote from: floridarandy – May 04, 2018, 09:00:16 pmHave 4 of each and considering changing all 4 before we leave on Friday (2 ea engine and gen). Very good idea, better at the house than on the freeway, Will also give you idea how fast you can expect your filters to clog up. If not too dirty, bag them up and save for emergency use. Quote Selected
Topic: The Next Issue to Troubleshoot