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09-11-2022, 07:42 AM
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#1
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Member
Join Date: Oct 2019
Posts: 48
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Onan7500 temperature sending unit
My Onan is running about 3-5 minutes then shutting down. Oil is fine, fuel tank is full...........
Fault code is showing "3", then the secondary fault code is showing 24, Temperature not changing..........
Anyway, I have searched for two days and cannot find Onan part number 1930 318. One site says "no longer available" 
Anybody know of a substitute or where to look ??????????
Thanks, Sonny
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09-11-2022, 09:00 AM
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#2
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Senior Member
Newmar Owners Club
Join Date: Aug 2014
Location: Wyoming
Posts: 113
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__________________
Brian
02 Mountain Aire 4370 ISM
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09-11-2022, 10:55 AM
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#3
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Senior Member
Fleetwood Owners Club Freightliner Owners Club
Join Date: Feb 2012
Location: Central Arkansas
Posts: 1,374
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Wow...that's pretty wild. I wonder if one of the generic senders available at auto parts would fit and work? Good luck in your search. I couldn't find any either. Of course...that's the next part I will NEED shortly. 
__________________
2008 Fleetwood Bounder 38S 2022 Grand Cherokee WK Limited 2021 Polaris Slingshot R Limited
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09-11-2022, 11:24 AM
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#4
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Member
Join Date: Oct 2019
Posts: 48
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Not sure how you found it, but thats it and its ordered. Thank you very much for the link
Sonny
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09-11-2022, 11:30 AM
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#5
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Member
Join Date: Oct 2019
Posts: 48
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Quote:
Originally Posted by RichKimball
Wow...that's pretty wild. I wonder if one of the generic senders available at auto parts would fit and work? Good luck in your search. I couldn't find any either. Of course...that's the next part I will NEED shortly. |
Well, Brian (DirtyDodge) sent me a link and its been ordered. So if you do need one, look at my thread in the motorhome general discussions, DirtyDodge left a link...........looks OEM
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09-11-2022, 11:32 AM
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#6
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Member
Join Date: Oct 2019
Posts: 48
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Well, Brian (DirtyDodge) sent me a link and its been ordered. So if you do need one, look at my thread in the motorhome general discussions, DirtyDodge left a link...........looks OEM
Thanks Brian......
Sonny
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09-11-2022, 12:37 PM
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#7
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Member
Join Date: Sep 2021
Location: Gladwin Michigan
Posts: 30
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Quote:
Originally Posted by Sonny7thb
My Onan is running about 3-5 minutes then shutting down. Oil is fine, fuel tank is full...........
Fault code is showing "3", then the secondary fault code is showing 24, Temperature not changing..........
Anyway, I have searched for two days and cannot find Onan part number 1930 318. One site says "no longer available"
Anybody know of a substitute or where to look ??????????
Thanks, Sonny |
I the temp is not changing, then it is a stuck thermostat.
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09-11-2022, 02:11 PM
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#8
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Senior Member
Fleetwood Owners Club Freightliner Owners Club
Join Date: Feb 2012
Location: Central Arkansas
Posts: 1,374
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Quote:
Originally Posted by Sonny7thb
Not sure how you found it, but thats it and its ordered. Thank you very much for the link
Sonny
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Good luck. Site says it ships IF in stock. Hopefully it is.
__________________
2008 Fleetwood Bounder 38S 2022 Grand Cherokee WK Limited 2021 Polaris Slingshot R Limited
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09-11-2022, 02:24 PM
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#9
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Senior Member
Newmar Owners Club
Join Date: Aug 2014
Location: Wyoming
Posts: 113
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You bet! Fingers crossed they have it
__________________
Brian
02 Mountain Aire 4370 ISM
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09-12-2022, 05:55 AM
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#10
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Member
Join Date: Oct 2019
Posts: 48
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Quote:
Originally Posted by BruceMcc
I the temp is not changing, then it is a stuck thermostat.
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Thermostat not stuck. Unit is barely warm to the touch when it shuts off. Apparently, the ECM is supposed to detect some type of temperature change within the first five minutes, if it doesn't, it will shut the unit down.........
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09-27-2022, 09:54 AM
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#11
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Senior Member
Fleetwood Owners Club Freightliner Owners Club
Join Date: Feb 2012
Location: Central Arkansas
Posts: 1,374
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Quote:
Originally Posted by Sonny7thb
Well, Brian (DirtyDodge) sent me a link and its been ordered. So if you do need one, look at my thread in the motorhome general discussions, DirtyDodge left a link...........looks OEM
Thanks Brian......
Sonny
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Sonny, did you receive the sender unit?
__________________
2008 Fleetwood Bounder 38S 2022 Grand Cherokee WK Limited 2021 Polaris Slingshot R Limited
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09-29-2022, 03:15 PM
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#12
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Member
Join Date: Oct 2019
Posts: 48
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Quote:
Originally Posted by RichKimball
Sonny, did you receive the sender unit?
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Yes, but not from the link to the vendor. I waited a week for it to ship, called and they admitted they had no idea if/when they would be able to ship it. Canceled the order and they refunded my money within minutes. (kudos to them for that).
On Friday, I got on Cummins chat, got connected with an after-hours parts guy who searched and found one at a hub in Baltimore. Part ordered.
On Monday he called to tell me that he contacted the Baltimore hub, and they didn't have one to ship. He went on to say that he searched and found one at the hub in Yakima WA. He ordered it and I had it Wednesday. That is incredible customer service!!!!!!
So, I did get it, I pulled the genset out, changed the sending unit, thermostat, and fan belt while I had it out. Put it back in, changed the oil, oil filter, fuel filter and air filter. Topped it off with anti freeze. ran it for a couple of hours with both AC's on. Took a short trip (1100 miles in 6 days) used it numerous times over the last 6 days and it performed flawlessly.
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09-29-2022, 04:00 PM
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#13
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Senior Member
Fleetwood Owners Club Freightliner Owners Club
Join Date: Feb 2012
Location: Central Arkansas
Posts: 1,374
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Happy to hear of your good fortune and success.
Sad though that there won’t be a source to order from
Thanks for the reply.
__________________
2008 Fleetwood Bounder 38S 2022 Grand Cherokee WK Limited 2021 Polaris Slingshot R Limited
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