Community Forums

racer26 · 06-06-2016, 07:50 PM

Any body have any ideas why my rv burns up a fuel pump relay about every 2500 miles. Works fine while driving, pulled up to fuel up shut it off and it would not start. Replaced the relay fired right up and off we went. It did this three times so far. Seems the work great, gives no sign its going to fail. Any body have any ideas?

RV Wizard · 06-07-2016, 03:25 AM

Resistance. Loose connections of terminals probably requires the wiring to be cut back and new connectors installed.

racer26 · 10-17-2016, 01:11 PM

I can tell you what I checked. First I changed the fuel filter. then I I checked the amps that the fuel pump drew. It was within spec. I noticed after I checked the fuel pump amps at the fuse that the clamps that held the fuse in the socket where streched out and the fuse was loose. So I went about fixing them so the clamped tight. After that I pulled the relay and noticed that there where sockets in the relay socket that had been widened out also. i tightened them up and replaced the relay and it has not burned up any since. I also was having a problem with vapor lock or stalling which I fixed by covering the fuel line back by the left muffler. I also wrapped the muffler and that problem disappeared. let me know what you find.

zorro2kita · 10-20-2016, 12:22 PM

I've also had vapor lock issues when driving on I-95 - hot summer day and tank below 1/2 full - stalled 3 times !!
On advice from this forum, now NEVER drive below 1/2 tank full of fuel, also had fuel lines taped with reflective tape - haven't had a problem in past 2 years - Remember, all fuel now contains at least 10 % ethanol which boils at a lower point than gas - trick is to keep fuel as cool as possible as it is a long run from fuel tank in back of coach to engine in front - in my case, it is a 37' run - hence the reflective tape and more than 40 gal in the tank - hope this helps !!

Arch Hoagland · 10-20-2016, 10:59 PM

Quote:

Originally Posted by zorro2kita

I've also had vapor lock issues when driving on I-95 - hot summer day and tank below 1/2 full - stalled 3 times !!
On advice from this forum, now NEVER drive below 1/2 tank full of fuel, also had fuel lines taped with reflective tape - haven't had a problem in past 2 years - Remember, all fuel now contains at least 10 % ethanol which boils at a lower point than gas - trick is to keep fuel as cool as possible as it is a long run from fuel tank in back of coach to engine in front - in my case, it is a 37' run - hence the reflective tape and more than 40 gal in the tank - hope this helps !!

When it stalled did you get a Check Engine Light?

zorro2kita · 10-21-2016, 12:22 PM

I can't recall for sure but I think not -- After checking all the fluids and let it rest for about 45 minutes, it started right up and ran fine till the next stall -

Thank goodness it happened near an exit each time and I was able to get to the exit lane and let it cool down for a bit - That was the worst experience I've had with the coach during 4 years of ownership --