glamisorbust
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Re: Advantages of diesel pushers
I would stick to Newmar, Holiday Rambler or Tiffin. Also, stick to Freightliner or Spartan Chassis. They are two of the biggest chassis manufacturer and you will find parts and service easily. The engine being out back makes it quiet up front. Mine has a rear radiator, and like others have mentioned, that makes engine access limited. Try and find one with Cummins ISL 400HP engine and side radiator. Mine has a 275 HP 5.9 ISB Cummins and it runs great. A little underpowered in the big hills, but I have been coast to coast pulling a crew cab 2500 diesel Chevy truck and it will go up anything. These are comfortable to drive, especially if you find one with independent front suspension. Hope this helps.783Views0likes0CommentsRe: Radiator Question for 98 Holiday Rambler Endeavor
I just did this job on my '99 Holiday Rambler Endeavor 37 CDS4. It's a big job, and a real bear. We pulled that steel tank off the top of the radiator first, opening it up quite a bit. We had to un-bolt the shroud from the radiator/intercooler to get it out. Radiator and intercooler came out in one piece. Putting it back in: Lay your fan shroud in there against the engine as far as you can. Then(with two people), put the bottom of the radiator in first, and try to get the bottom bolts lined up(the two on the bottom that connect to the frame. After you get that in place, you need to hook up as much of the plumbing as possible, because after you put that tank on top, access is limited. Bolt the fan shroud to the intercooler/radiator assembly and connect those rods on the top to the frame. Open the bleed valve and fill with coolant. As long as you've got the radiator out, I will throw this out there. I wanted to replace my original 21 year old fan because it has some chunks missing out of it(small chunks). I found a company out of Oregon called "source RV". You can google it. But they sell a fan for $600 that is supposed to give you 1MPG better fuel economy, 50% quieter, and free up 32HP to the wheels. I haven't tried mine yet but as soon as I get it back I will know more. Hope this helps!422Views0likes0CommentsRe: Cummins ISB 5.9 Cranks but no fire-ECM power.
Ok guys, I have found the problem. The last resort was towing this RV to freightliner, since I purchased the remanufactured OEM cummins ECM through them. Had it towed Monday 12/7 and I got a call from them a few hours after they received it. The VP44 injection pump is no good. I purchased my remanufactured unit through Thoroughbred diesel. It did fire on a breakout box(cummins tool to make sure fuel injection pump is working properly). I went through 3 computers, one of them fired the engine up but ran poorly, no throttle pedal. Freightliner seems to think one of those ECM's that was programmed incorrectly fried the electronics on the VP44. There is a sensor on the pump telling it when to release fuel to each cylinder. That is not working. Pump needs to be replaced. I am having them put on a remanufactured OEM cummins VP44 injection pump. Hopefully this will be the last of the problems. I will update again after I get the coach back from Freightliner. Thanks for all the replies, it definitely helped.1.8KViews1like0CommentsRe: Cummins ISB 5.9 Cranks but no fire-ECM power.
My brother and I spent about half of the day trying to diagnose the problem. I'm pretty sure at this point we know we have a bad ECM. There is definitely constant power there, and the switched ignition works as it should. We got a wiring schematic from Freightliner south carolina, and traced out all the wires. The lift pump still has no power, indicating the ECM isn't letting the pump run. I have put a battery directly on the lift pump to see if it would fire. With 15 PSI the engine doesn't even try to fire. Just cranks.1.8KViews0likes0CommentsRe: Cummins ISB 5.9 Cranks but no fire-ECM power.
We just checked all 5 fuses in the battery box, going right into the main wiring harness. All fuses are good, verified with test light. However, some of the fuse holders have power at both sides, without a fuse installed. Maybe the ECM is back feeding those lines with power?1.8KViews0likes0CommentsRe: Cummins ISB 5.9 Cranks but no fire-ECM power.
Thanks for the replies. I just replaced the ignition switch to rule that out. As I thought, it didn't do anything different than the other one. The step doesn't work, and the engine will crank but not start. Check engine light comes on with ignition, turns off for a few seconds, then right back on. I'm at a loss for words.607Views0likes0CommentsCummins ISB 5.9 Cranks but no fire-ECM power.
99 Holiday Rambler Endeavor 37CDS4 with Cummins 5.9 and Allison 3060. 180k miles. Just did a lot of major repairs including the following: -Cylinder head rebuilt, including new OEM sensors and cam sensor. -Rebuilt VP44 injection pump. -New cooling fan from source RV, and bearing. -All new belts, hoses, thermostat etc. -Refurbished cummins ECM. -New OEM Bosch injectors. -Billet aluminum tappet cover(better seal than OEM). Here is the issue: The coach was running when parked, but leaking water from the water pump and small leak from head gasket aging out. The gasket on the tappet cover had a bad leak too. So I decided to pull the head and have it rebuilt, clean it all up and put everything back together. It will crank but not fire. Got a breakout box from cummins to verify the VP44 is in good working condition. It fired right using that tool. The stock ECM ended up failing somewhere after I took everything apart. No idea why. Maybe because it was covered in oil. I have tried 5 different ECM's including the OEM one, and only one out of those fired it up. But the tune was wrong, making it undriveable. So I got a $2000 OEM refurbished one from cummins. It has been programmed properly, but this thing still fails to fire off. I don't think I'm getting good power to the ECM, due to the lift pump also not activating. I have a suspicion the ignition key has something to do with it but haven't checked that yet. The step also doesn't come back in like it used to when you turn the ignition on. Is this most likely a bad ignition switch, relay or something else? The RV has been down for over 4 months now and I need to get it back running. One more thing: The ignition crank works about 50% of the time, so I wired in a push button switch near the engine in an outside bay. Makes it where I don't get stranded if the engine doesn't crank. Any help or ideas are greatly appreciated. Thank you.8.8KViews0likes18Comments
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