2011 Kubota RTV 500 starts and runs 5 seconds then dies

papajoe

Active member

Equipment
L3901DT Shuttle (2017), B6100E (1978), B6100E (1979), B6100HST-E (1985), RTV500
Dec 26, 2017
98
178
33
68
Oak Grove, La.
I pulled the pump to check the filter. One of the terminals on the pump motor was loose.
 

DDB171

New member

Equipment
rtv500
May 29, 2025
16
1
3
ohio
Ok, I'm back at it after letting it sit for a bit while I got caught up on the other machines in the shop. I thought that since one of the things the ECM relies on, is air pressure readings from sensors, I'd fix the exhaust leak. Well, it turned out that the manifold was broken and had a major leak. I put a new manifold on. When I started it, it ran pretty good for a little bit, not great, but good. I was able to at least drive it. I could not do this before. The more I drove it the worse it got. I noticed the temp gauge was not going up as the engine warmed up. It got back to running the same (barely) as when I had started working on it after about 10-15 minutes. I am waiting on a temp sensor. I was sure it tested ok, we'll see. To be conti.......
 

Clutch

Member

Equipment
L2900, RTV500, T2380
Oct 21, 2024
54
14
8
NY - USA
Thanks for updating! I was wondering if you ever got things squared away...

Did you check the air temp sensor or the engine water temp sensor the first time around?
 

DDB171

New member

Equipment
rtv500
May 29, 2025
16
1
3
ohio
Yes, I checked both according to the manual. The thing that I didn't do was take the coolant sensor out and heat it up in water to watch it change. It was at the approximate ohms for the room temp. I sure hope this is it. I'm ready to call it on this thing. It has become that thing to where its about pride now. I'm def not making money on this one.