Good Sam Club Open Roads Forum: Onan marquis 7000 shutting off after like 15 min/overheat
Open Roads Forum Already a member? Login here.   If not, Register Today!  |  Help

Newest  |  Active  |  Popular  |  RVing FAQ Forum Rules  |  Forum Posting Help and Support  |  Contact  

Search:   Advanced Search

Search only in Class A Motorhomes

Open Roads Forum  >  Class A Motorhomes  >  Maintenance Issues & Tips

 > Onan marquis 7000 shutting off after like 15 min/overheat

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Page of 2  
Prev
FloridaRosebud

Melbourne

Senior Member

Joined: 05/27/2018

View Profile


Offline
Posted: 08/30/22 10:55am Link  |  Quote  |  Print  |  Notify Moderator

Chrisbouch wrote:

Not getting a code. Maybe it's not overheating you're right. I guess it could be a fuel pump or the exhaust leak. Exhaust leak sounds right honestly as it's hotter than heck and the hot air seems to be blowing as much out of unit as it does out the exhaust and works when cold weather


Do you have a light on the start switch that's on the Genny? That is where you would read the code. The manuals have numerous codes in the back for troubleshooting. It also tells you how to read your code. Mine was a 36, which means the engine shut off with no communications electrically, IOW it had to be a fuel issue. I've learned that the fuel pumps for these gas Onans are good for about 750 hours, then the diaphram gets weak and will not keep the pressure up once it gets hot. It is true for the 4,000, 5,500, and 7,000 gas units. Many You-Tube videos on this issue.

Al

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Page of 2  
Prev

Open Roads Forum  >  Class A Motorhomes  >  Maintenance Issues & Tips

 > Onan marquis 7000 shutting off after like 15 min/overheat
Search:   Advanced Search

Search only in Class A Motorhomes


New posts No new posts
Closed, new posts Closed, no new posts
Moved, new posts Moved, no new posts

Adjust text size:




© 2023 CWI, Inc. © 2023 Good Sam Enterprises, LLC. All Rights Reserved.