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10-01-2022, 10:32 AM
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#1
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Junior Member
Join Date: May 2021
Posts: 23
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Oil sensor 8.93 cummins
I have been unable to locate a source for the oil sensor for the Cummins 400 hp 8.93 ILS that is in my MH. I've been researching using the part number on the old sensor and so far all cross-referenced sensors will not fit. Interested in hearing from individuals that have successfully removed and replaced same.
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10-01-2022, 01:55 PM
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#2
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Senior Member
Monaco Owners Club
Join Date: Jun 2014
Posts: 14,605
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Do you have a part number of the old one?
On my engine Cummins has changed the original oil sensor, which gave a graduated oil pressure reading, to a switch that will read 55 psi. Not sure why they did it but if my oil sensor fails I would have to take it to Cummins for the new sensor and the ECM reprogramming, cost !~$400.
There have been posts on this and someone posted that there is an oil sensor that will replace the old one and provide the graduated oil pressure. Here is a thread I found, it has the part number you might be able to try. I bought one to carry as a spare.
https://www.irv2.com/forums/f123/350...or-393172.html
__________________
Jim J
2002 Monaco Windsor 38 PKD Cummins ISC 350 8.3L
2005 Jeep Grand Cherokee w/5.7 Hemi
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10-01-2022, 01:55 PM
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#3
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Senior Member
American Coach Owners Club
Join Date: Apr 2016
Location: North Florida
Posts: 2,474
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What part number.is stamped on it?....is this the one located just behind and above the starter?
Perhaps double check the part # in Cummins quickserve....
There's also a part # supercede link as well if you put the part # in
https://parts.cummins.com/
__________________
1999 American Eagle
ASE med/heavy certified technician
ASE advanced diesel certified
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10-01-2022, 06:54 PM
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#4
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Junior Member
Join Date: May 2021
Posts: 23
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Quote:
Originally Posted by jacwjames
do you have a part number of the old one?
On my engine cummins has changed the original oil sensor, which gave a graduated oil pressure reading, to a switch that will read 55 psi. Not sure why they did it but if my oil sensor fails i would have to take it to cummins for the new sensor and the ecm reprogramming, cost !~$400.
There have been posts on this and someone posted that there is an oil sensor that will replace the old one and provide the graduated oil pressure. Here is a thread i found, it has the part number you might be able to try. I bought one to carry as a spare.
https://www.irv2.com/forums/f123/350...or-393172.html
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3408428
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10-01-2022, 07:31 PM
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#5
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Senior Member
Monaco Owners Club
Join Date: Jun 2014
Posts: 14,605
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That is the same sensor/sender that is for my 8.3, it is not available anymore, it is superseded by the switch.
This is what I ordered based on other posts, I have not tried it but it is suppose to be a direct replacement.
https://www.ebay.com/itm/384198815175
__________________
Jim J
2002 Monaco Windsor 38 PKD Cummins ISC 350 8.3L
2005 Jeep Grand Cherokee w/5.7 Hemi
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10-01-2022, 07:39 PM
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#6
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Senior Member
American Coach Owners Club
Join Date: Apr 2016
Location: North Florida
Posts: 2,474
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I did replace mine 4 years ago on my ISC...used the one James linked to ....I think the switch is same on all of them.
All it does is tell the ECM the engine has oil pressure at cranking speed and allow it to start.
__________________
1999 American Eagle
ASE med/heavy certified technician
ASE advanced diesel certified
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10-01-2022, 08:02 PM
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#7
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Senior Member
Monaco Owners Club
Join Date: Jun 2014
Posts: 14,605
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Quote:
Originally Posted by mackwrench
I did replace mine 4 years ago on my ISC...used the one James linked to ....I think the switch is same on all of them.
All it does is tell the ECM the engine has oil pressure at cranking speed and allow it to start.
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There ya go, thanks Mackwrench.
If your original sender goes bad it will send a CEL and derate the engine. Back ~3-4 years ago I was helping another Monaco owner off line and that's what happened to him. After eliminating pretty much every other cause I thought it might be the oil pressure sender, he took it to Cummins and sure enough that's what it was but they would only install the new version "switch" which required the ECM to be reprogrammed. I think he paid ~$450 to have it done.
__________________
Jim J
2002 Monaco Windsor 38 PKD Cummins ISC 350 8.3L
2005 Jeep Grand Cherokee w/5.7 Hemi
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10-02-2022, 06:20 AM
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#8
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Senior Member
American Coach Owners Club
Join Date: Apr 2016
Location: North Florida
Posts: 2,474
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When mine failed, engine would not start.
__________________
1999 American Eagle
ASE med/heavy certified technician
ASE advanced diesel certified
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10-02-2022, 07:11 AM
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#9
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Senior Member
Monaco Owners Club
Join Date: Jun 2014
Posts: 14,605
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Quote:
Originally Posted by mackwrench
When mine failed, engine would not start.
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How did you know it was the sensor??? Did you have any way of reading codes??
The individual I helped could start his rig but was derated, not sure what it is suppose to do.
__________________
Jim J
2002 Monaco Windsor 38 PKD Cummins ISC 350 8.3L
2005 Jeep Grand Cherokee w/5.7 Hemi
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10-02-2022, 08:59 AM
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#10
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Senior Member
American Coach Owners Club
Join Date: Apr 2016
Location: North Florida
Posts: 2,474
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Quote:
Originally Posted by jacwjames
How did you know it was the sensor??? Did you have any way of reading codes??
The individual I helped could start his rig but was derated, not sure what it is suppose to do.
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Yes. Happened in parking lot in Daytona, I have a inexpensive scan tool / code reader. It'll read live data. Showed no oil pressure at cranking. I unplugged the sensor and it started up, I drove it home, but CEL light was on.
Mine is a 1999 ISC, not sure what if any changes where made as far as derate goes in later engines, but once the switch is replaced and ECM programed for it, I don't think it'll start if switch fails, or engine has no oil pressure.
__________________
1999 American Eagle
ASE med/heavy certified technician
ASE advanced diesel certified
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10-04-2022, 10:31 PM
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#11
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Senior Member
Join Date: Aug 2001
Location: North America somewhere
Posts: 30,971
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I have no idea if this will help or not: Cummins 6C.8.3 maintenance manual
The 8.3 and 8.9 have the same block, the 8.9 is stroked.
__________________
2000 Winnebago Ultimate Freedom USQ40JD , ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA. " My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
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10-06-2022, 04:32 AM
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#12
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Junior Member
Join Date: May 2021
Posts: 23
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It certainly will help me if not with this problem but with future issues of just understanding how to best take care of the engine.
Thanks
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10-06-2022, 01:30 PM
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#13
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Senior Member
Join Date: Aug 2001
Location: North America somewhere
Posts: 30,971
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You also might find this useful: https://www.cummins.com/support/manuals
I am so sorry, I didn't read your initial post information correctly. You do not have a 6C8.3, but rather an ISC 8.3. There are many differences, so disregard the manual I linked to in reply #11.
You will find the correct manuals in this link.
__________________
2000 Winnebago Ultimate Freedom USQ40JD , ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA. " My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
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10-08-2022, 08:16 AM
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#14
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Senior Member
Join Date: Apr 2022
Posts: 212
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Ray...
Looked at the link and a manual for an isc8.3 is not there
Should i go ahead and purchase the one there is there same stuff in there?
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