f430040
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Posts posted by f430040
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It is more likely OPEN somewhere upstream, not shorted. If it was shorted, you couldn’t jump power to it to make it work.
Sorry, I can’t help you with a diagram.
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It won’t take an hour. 30 seconds is plenty.
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On 10/19/2022 at 8:15 PM, jleamont said:did anyone pressure test your cooling system for leaks?
No, however I’m not losing any coolant.
On 10/17/2022 at 8:33 PM, wildebill308 said:You said " When the intake air temperature is 160 degrees F the engine will run a lot hotter than if the intake air temperature is 60 degrees."
How do you know what the temp is if you don't have a gage? At what ambient temp?
I DO have a gauge! It’s all in Silverleaf. Intake Air Temperature is one of dozens of performance stats that can be monitored. The ambient temperature at your location is easy to get via weather apps on the phone.
Do you know what your EGT (exhaust gas temp) is and what # boost are you pulling on the hills?
I do not know the EGT (it’s one of the few things not reported in Silverleaf). However, I think the computer controls the throttle to prevent excess EGT temps. I’m pulling roughly 30 psi at WOT at 1800-2000 RPM.
Based upon what I’ve read on the net plus additional information I received in some private emails, I’m convinced that my CAC is not doing it’s job. I’ve already ordered it, and the folks at Freightliner in Gaffney will install it in February.
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On 10/13/2022 at 8:23 PM, jleamont said:Air intake temperatures shouldn’t cause an overheating condition in the cooling system. Sluggish, lacking power poor MPG’s, all day long.
High intake air temperatures certainly WILL cause an overheat condition! When the intake air temperature is 160 degrees F the engine will run a lot hotter than if the intake air temperature is 60 degrees. All that heat has to go somewhere.
Are you sure it’s actually getting hot, could it be a sensor issue providing bad data?
It’s getting hot
since you’ve already conquered where I would have started I’d check the lower radiator hose, is it collapsing under load?
No.
are we sure the fan is engaging?
Yes.
what RPM are you pulling hills?
2,000 RPM
How many PSI is the radiator cap?
Good question…I don’t know. I’ll have to check on this. But this has nothing to do with high intake air temperatures.
I would call Cummins with your engine serial number and see what PSI cap that engine is supposed to be equipped with.
our coach would climb to 215 and it had an 8psi cap on it, I swapped it for a 14 PSI CAP, never had an issue again and I’ve never gone above 200 since. Per Cummins our vintage ISL could handle up to 18 psi.
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The wheels are still on. It’s an optical illusion.
The wheels are all on jacks. They lifted the whole coach to get easy access to the radiator area. The rear wheels are hidden by the open basement door.
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Yes, that whole area was cleaned when the new radiator was installed at Source Engineering.
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I have a 2006 Mandalay 40E on the Freightliner XC-R chassis with the 400HP Cummins ISL and the side radiator. It has 134,000 miles on it.I’ve had ongoing issues with the engine overheating on grades, and I’ve spent thousands of dollars chasing it. I’ve done all the usual stuff; thermostat, the Source Engineering wax valve, confirming the cooling fan speeds, and even a new radiator.
I am interested to know what your Intake Air Temperatures are. This information is available in the Silverleaf app, and may be available in other apps, too. I think the final item in my overheat chain may be the charge air cooler. I would like to know two things:- The intake air temperature under normal cruise on a level road
- The difference between the intake air temperature and the ambient temperature
I would also like to know the same temps when pulling a grade.I’ve been told that the Cummins spec on this is that the Intake Air Temp should never be higher than 43 degrees F above the ambient temperature. Mine runs a lot hotter than that.Your help will be greatly appreciated. -
On 2/17/2022 at 9:25 PM, elibedarn said:Yes. On auto and working on 12 volt. Thank you for asking.
If the fridge is working, you have 12-volt power into the coach. What - exactly - is not working?
On 2/21/2022 at 8:19 PM, rossboyer said:There should a very large fuse (150-300amp) in the positive line from batteries before it connects to the inverter.
The inverter has nothing to do with 12 volt power in the coach. An inverter takes 12 volts DC and produces 110 volts AC. And if the fridge is working, there is 12-volt power in the coach.
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You will spend a lot more time LIVING in the coach than you will visiting National Parks. Pick a floor plan you like and don’t worry about the length. There are always alternatives to staying in a National Park. There are no alternatives if you get stuck with a floor plan you don’t like.
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I got rid of the trouble-prone Sauer-Danfoss system and installed THIS. No more problems.
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If you are running the generator, the inverter is not used. An inverter takes 12-volts DC and converts it to 120 volts AC. When the generator kicks in, the inverter is taken out of the circuit.
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On 9/9/2021 at 1:06 AM, aztec7fan said:I know in Colorado, chains are required to be carried from Sept 1st to may 31st. I did some quick googling, but couldnt find any date restrictions in utah, california or wyoming.
That September 1 through May 1 chain requirement in Colorado only applies to I-70. If you avoid I-70, you don’t need to carry chains.
The I-70 crossing of the Rockies is the steepest and highest of the three interstates (70, 80 and 90) that cross those mountains.
- The highest point on I-70 is approximately 12,000 feet.
- The highest point on I-80 is approximately 8,000 feet.
- The highest point on I-90 is only 6,000 feet.
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That’s a helpful reply, ramseypk, but this is a 2-year old thread. Obviously the OP has no interest in this any more.
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About a year ago I took a look at the 45AT. This floor plan has a sliding door between the living area and the bedroom. As I was looking at this coach, I decided to close that sliding door, just to see how it looked. When the top of the sliding door touched the opposing wall, there was a 1-inch gap between the door and the wall at the bottom of the door!
I slid the door back open, exited the coach, and scratched this model off my list. If it’s that far out of square, I’m not interested.
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The National Truck Maintenance Council has determined that a typical truck radiator loses 1% of its cooling capacity every year, even with perfect maintenance. Flushing it will not restore the lost capacity. You could be down 17% in cooling capacity in the radiator. It may be time for a new one.
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Not to belabor the point, but it’s “CUMMINS” not “CUMMINGS.”
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On 5/4/2021 at 10:33 AM, wildebill308 said:I would take I-20 to Birmingham then I-22 to Memphis to pick up I-40 west That will take you to Williams AZ.
You should plan to take I-240 around the south side of Memphis and cross the river on I-55. The I-40 bridge is closed...for a long time. They found a crack in it a few days ago.
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On 2/26/2021 at 9:09 AM, urbanhermit said:...No continuity from the end of it's ground wire to known ground....
There’s your answer. That’s the text book definition of an open ground.
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I understand this is an old thread.
Has anything changed here since 2009? I would also like to change my Display Name, but I want to use the same email address as I use on this account.
We should be able to request a display name change and get it done at the admin level. I can understand why you don’t want members to be able to change their own display name, but I hope that admins can do it.
If you cannot change my display name, please delete my account and send me an email to let me know you’ve done that. Then I’ll re-register with a new Display Name.
Thanks.
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No need for Velcro, stick-ons or suction cups. I just set my EZ-Pass on the dash down by the windshield...five years ago. It’s still there.
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You still have this problem, three years from your original post?
You’ve got to be kidding.
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I just replaced 10 year old Michelin drive tires with a set of 4 Yokohama’s. Went up one size, from 275/75R 22.5 to 295/80R 22.5. Also went from 14 ply to 16 ply, which means I can drop the pressure about 10 psi from 95 to 85. So far I’m very happy with the new tires.
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On 9/8/2020 at 5:49 PM, RayIN said:All my records are on my computer, and will be deleted when the vehicle is sold or traded.
I’m sorry, but that’s just nuts! Why in the world would you ever do that? And, as manholt said, it’s an unenforceable law with no teeth.
Those files represent a treasure trove of valuable information for a new owner...no matter how the vehicle is sold. I liken it to an aircraft log book. I have a three-ring binder that contains every service invoice that has been written on my coach...from day one. I also use a custom software program I wrote that contains every maintenance record and every trip record...also from day one. All of this will go to the new owner when we ultimately sell the coach.
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Mileage on a motor home means nothing when determining its value. It’s all about the year of manufacture. That’s it.
Tow capacity
in Type A motorhomes
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What part of, “The tow capacity is 5,000 pounds.” do you not understand?