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Old 12-27-2009, 05:00 AM   #1
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A question about oil pressure on the ISL?

Santa brought me a VMSpc and a viliv X70 EX to run it on. I've been having fun playing with it and trying to figure out the instrument display that I like. I have always wondered about my oil pressure because the needle stays around the low end of the normal range after warm up. During our trip yesterday on I-75 the oil pressure stayed between 58 and 62 pounds. This seems to be adequate but I thought I would get input from others using VMSpc on an ISL. So what are you folks seeing for oil pressure on your ISL?

Bob
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Old 12-27-2009, 09:59 AM   #2
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I don't have the VMSpc but according to the Aaladin our oil pressures are running the same as you are recording. (2008 ISL ULSD engine)
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Old 12-27-2009, 10:22 AM   #3
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Our Aladdin system reads the same. Generally 60 lbs (400ISL) at cruise speeds. I have not talked to any Monaco owner that doesn't have problems with the dash gauges reading correctly.
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Old 12-27-2009, 11:51 AM   #4
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Hi Bob,
I have and ISC. While not exactly the same, it may be close enough to give you confidence as to the PSI pressure. At idle my engine needs only 4 lbs PSI for proper lubrication (Cummins help desk statement) The engine runs around 10 PSI at warm idle. Cruising speed my engine needs only 18 PSI for proper lubrication (Cummins help desk statement). At 60 MPH my engine runs around 50-55 PSI.
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Old 12-27-2009, 12:46 PM   #5
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The Aladdin in our coach shows 55lb no matter what as long as the engine is running. Obviously bad. The dash guage usually shows around 40-60 lbs. I asked the Cummins shop guys in Bloomington, Ca about it a few years ago and their response was that anything over 10 lbs was good and a little under at idle was OK too. They also told me that excessive idiling for warm up and cool down wasn't necessary and could do damage.
Remember that high pressure all the time can mean blocked passages in the oil channels etc. Had a car a few years ago that showed great pressure all the time but there was oil starvation in some areas of the engine due to debris in the system. Low pressure can indicate that the pump is underperforming but it can also mean that the oil is running freely thru the engine as well.
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Old 12-27-2009, 01:37 PM   #6
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Quote:
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Hi Bob,
I have and ISC. While not exactly the same, it may be close enough to give you confidence as to the PSI pressure. At idle my engine needs only 4 lbs PSI for proper lubrication (Cummins help desk statement) The engine runs around 10 PSI at warm idle. Cruising speed my engine needs only 18 PSI for proper lubrication (Cummins help desk statement). At 60 MPH my engine runs around 50-55 PSI.
Gary I would bet you are not running a VMSpc, I think most of the dash gauges are not accurate or at least on the 2 Monaco's we have owned. I would think your hot Idle is higher than 10 psi probalu higher than 20 lb and the guy that told you all you need at idle is 4 psi is pulling your leg.
My ISC with 60,000 miles hot idle is over 30 + psi and at cruse 60 mph at 60+ psi. You probably have a bad sender or not grounded properly.
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Old 12-27-2009, 02:35 PM   #7
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Hi Walt,
The reading mentioned are from the dash gages. The gage fluctuates depending on the speed of the engine. The readings mentioned have been consistent since I took delivery of the coach. I had it checked 3 times while under its' 3 year warranty. Two times by Spartan (factory) and once by Cummins in Grand Rapids. All confirmed the gage was correct. The fluctuations in PSI was normal. The PSI mentioned is well within acceptable Cummins spec. During this time I called Cummins and asked about the PSI readings. The information they gave me is what I posted. At the Newmar International rallies, I have asked Cummins tech reps. They check their computer and tell me the same thing. Unless you have some documentation to prove they are all pulling my leg, I'll stick with the trend over time of consistent information.
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Old 12-27-2009, 11:23 PM   #8
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nodine...I think you just wanted to brag about what a neat gift Santa brought you!! I don't think Santa brought anyone else such a cool present, by the looks of their answers. We are all green with envy!
I think you should post back again in a couple of days and gloat again!! Or better yet - maybe I can then move this thread into General Discussion and get even more members a bit green! (You might even get a few more responses!)



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Old 12-28-2009, 12:01 AM   #9
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Bob...I know what the VMSpc is, but what is the villig...is it one of the new small netbooks?

I think the price of their box system is outrageous, but I've been wondering if you could run the VMSpc software in one of the small netbook computers. It could be mounted on the dash like one of their all in one units.
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Old 12-28-2009, 12:08 AM   #10
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Bob...I know what the VMSpc is, but what is the villig...is it one of the new small netbooks?

I think the price of their box system is outrageous, but I've been wondering if you could run the VMSpc software in one of the small netbook computers. It could be mounted on the dash like one of their all in one units.
Diplomat Don... You can see a viliv here



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Old 12-28-2009, 05:48 AM   #11
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nodine...I think you just wanted to brag about what a neat gift Santa brought you!! I don't think Santa brought anyone else such a cool present, by the looks of their answers. We are all green with envy!
I think you should post back again in a couple of days and gloat again!! Or better yet - maybe I can then move this thread into General Discussion and get even more members a bit green! (You might even get a few more responses!)
MM,

I was curious about normal oil pressure and thought others were running the VMSpc on this site. I was extra nice to Santa this year! I guess most folks have the Aladin and don't need the VMSpc. Our coach was light on options and so far I have installed the Sanicon, water hose reel, and satellite dish. I am glad it did not have the satellite dish because that gave me the excuse to put a nice open dish HD system up there.

The bad news is I am a habitual tinker and this coach is getting just about perfect. I still have the bad mattress to deal with. Do you know if a queen size mattress can be moved in and out of this floor plan without removing the windshield? I am sitting here near Disney World to start our annual two week winter visit to Florida and my back is killing me. That &%$#@ mattress has got to go. I put one of those thick memory foam pads on it and still have problems. And now I can barely lift the bed to get under neath.

Bob with the hurting back.
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Old 12-28-2009, 05:53 AM   #12
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Quote:
Originally Posted by Diplomat Don View Post
Bob...I know what the VMSpc is, but what is the villig...is it one of the new small netbooks?

I think the price of their box system is outrageous, but I've been wondering if you could run the VMSpc software in one of the small netbook computers. It could be mounted on the dash like one of their all in one units.
Don,

Yes a tablet PC. You can run VMSpc on any laptop or computer. The software is free and you can download it and play with it with out the interface box. Go to this site:
SilverLeaf Electronics, Inc. | Knowledge is Horsepower

I am just getting started with it but will try to answer any questions you have.

Bob
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Old 12-28-2009, 07:29 AM   #13
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Bob, I think your oil pressure question was answered but for one more data point our 2007 Endeavor, 400 ISL, ran about the same pressure you see during normal operation. At start up, when cold, it was about 70 or so psi and then dropped to about 50 psi when warm. It idled at between 10 and 15 psi. All this from the Aladdin Jr. system not the dash gauges. The dash gauges were never accurate. Interestingly enough on our new coach, which has dash gauges plus a digital indicator panel, the dash gauges are pretty accurate.

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Old 12-28-2009, 03:15 PM   #14
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Bob, I think your oil pressure question was answered but for one more data point our 2007 Endeavor, 400 ISL, ran about the same pressure you see during normal operation. At start up, when cold, it was about 70 or so psi and then dropped to about 50 psi when warm. It idled at between 10 and 15 psi. All this from the Aladdin Jr. system not the dash gauges. The dash gauges were never accurate. Interestingly enough on our new coach, which has dash gauges plus a digital indicator panel, the dash gauges are pretty accurate.

Lew
Thanks Lew and everyone else who responded. I also see about 70 pounds when the engine is cold. When we first got the coach I was alarmed at how low the oil pressure appeared to be but was told the dash gauge was not accurate.

Bob
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