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Topic: Fuel shutoff solenoid (Read 1325 times) previous topic - next topic

Fuel shutoff solenoid

Got the part, now need advise. Looks to be easiest going from above under the bed. Do I put my gut over the edge or keep it safely inside the coach? Doesn't look difficult other than that one little problem. ;D
Larry
1996 U295 36'
Build # 4805
Actually we sold it but just like to lurk

Re: Fuel shutoff solenoid

Reply #1 –
Larry, I have the same overhang problem that you do but I was able to replace the fuel shutoff on mine.
I went under the bed but I worked from the left side.  By standing with my feet on the transmission housing and the engine mount I could lean over and reach the bolts.  I found that the hardest one was at the top , seems like I used a 1/4' drive and and extension and socket to reach it.  I also found that the mount with the new solenoid was different but it came with the solenoid.
Good luck
Gary B

Re: Fuel shutoff solenoid

Reply #2 –
We changed our fuel shutoff and think it is one of the more important items to upgrade as you see, the new one has a heavier solenoid. We did have ours fail and was able to drive for over a week by using a cable tie to start and cut the cable tie to shut down engine.

Several years ago, the cotter pin came out, allowing the solenoid shaft to move from its normal position on the fuel linkage jamming the solenoid so it would only partially open fuel. We started just fine but could only drive to about 10 mph, caused by limited fuel flow. Well that took a while to diagnose, and after changing fuel & air filters, happen to, by chance notice the angled solenoid shaft. It will now be the first place we will look for low power issues.

I changed ours by leaning over the engine from the side of the bed. Nice to find the 3-wire electric plug buried in the engine cable harness.

The solenoid's small hold-open windings get ignition power, but the coil is not strong enough to move fuel linkage. The solenoid's heavier windings get starter power to pull-up solenoid for fuel flow, but would probably burn out if continuous power was applied to these windings. I think only the C-8.3 engine uses this type of fuel shutoff. I guess there are only two electrical circuits controlling our engine, fuel solenoid and intake manifold wait-to-start heater. Simple design.

Re: Fuel shutoff solenoid

Reply #3 –
Gary,

Your radiator is not in the back but on the side no? You can still pull up the bed and get to your engine from the bedroom?
My U225 has the radiator in the back :-( I thought higher models all had the radiator on the side and the engine was only accessed from the back?

Thank you.
AL
Former 2003 GV U295 (6230) (2015 - 2025)
Former 94 GV U225 (2013-2016)

Re: Fuel shutoff solenoid

Reply #4 –
No, all models have engine access (actually excellent access) from the TOP.  All but the U225 and a few older (pre 1993) models with rear radiators ALSO have rear access.
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: Fuel shutoff solenoid

Reply #5 –
Quote
Gary,

Your radiator is not in the back but on the side no? You can still pull up the bed and get to your engine from the bedroom?
My U225 has the radiator in the back :-( I thought higher models all had the radiator on the side and the engine was only accessed from the back?

Thank you.
AL
Al, As Brett says access is from the top on mine. I have a side radiator and with access from rear with full width hatch and from top with the bed up there is lots of room to work.
When raising the bed be SURE that you prop it up with something substantial, you don't want that thing slamming you on the head.  I use two adjustable poles like you would use with a long handles brush or paint roller. I don't trust the gas lifts.
Gary B

Re: Fuel shutoff solenoid

Reply #6 –
Gee, since my topic has changed so will I. When I get service done at Coach Care facilities they right the engine and transmission ser. nos. on the work sheet. Makes it easy.
Larry
1996 U295 36'
Build # 4805
Actually we sold it but just like to lurk

Re: Fuel shutoff solenoid

Reply #7 –
Would it be prudent to replace the fuel shutoff solenoid on my 1996 U320 M11 engine with 110,000 miles?
Wyatt
96 U320 40 WTFE, build 4943
84 Toyota Supra towd
2015 Jeep Wrangler towd
Victoria, BC, Canada

Re: Fuel shutoff solenoid

Reply #8 –
I've 154,000 on my '96 when it quit. I can see the bottom boot is torn and that may have let water in and damaged the coil. Will put the new one in sometime next week. Looking back, we had trouble accelerating up a hill out of Milwaukee on I-37 and then in Plymouth. WI going up a hill. Could have been the solenoid not pulling in all the way. Just don't know and doing the hind-site thing doesn't mean I'll know something else that's going bad by some "strange" action of the coach. Just keep changing parts and going down the road. What a great adventure!
Larry
1996 U295 36'
Build # 4805
Actually we sold it but just like to lurk

Re: Fuel shutoff solenoid

Reply #10 –
Quote from: lgshoup –
Gee, since my topic has changed so will I. When I get service done at Coach Care facilities they right the engine and transmission ser. nos. on the work sheet. Makes it easy.
Very sorry about that I did not mean to change the subject.
Engine serial number
Thanks for help about the ESN.
Former 2003 GV U295 (6230) (2015 - 2025)
Former 94 GV U225 (2013-2016)

Re: Fuel shutoff solenoid

Reply #11 –
Wyatt,

No fuel shutdown solenoid on the M11.
Regards,
Brett

'99 42' Foretravel Xtreme
'14 Brown Motorsports Stacker
'05 Chevy SSR
'02 BMW R1150R

Re: Fuel shutoff solenoid

Reply #12 –
Where would the best source for buying one. I do not want a Chinese made one. Anyone know a Cummins source that is not list price?
Thank you John
John
1998 U270 34'

Re: Fuel shutoff solenoid

Reply #14 –
OK, replaced the shutoff sol. but still have the same trouble. Where is the relay and the fuseable link hidden on a '96 U-295? Any ideas?
Larry
1996 U295 36'
Build # 4805
Actually we sold it but just like to lurk

Re: Fuel shutoff solenoid

Reply #15 –
Larry,  First of all I am assuming you have a Cummins 8.3, if not disregard this.
Does it CRANK ?
With key on do you have voltage at the solenoid ?  What is it ? Less than 12 may not be enough to pull solenoid in.  Try lifting arm manually, just push up on it while cranking, if it starts you have a solenoid or voltage problem.  If it does not start you have other problems.
Where are you ?  Maybe someone here is close enough to help you out.
Gary B

Re: Fuel shutoff solenoid

Reply #16 –
Quote from: lgshoup –
Where is the relay and the fuseable link hidden on a '96 U-295? Any ideas?
There was no relay on my '94 U225.  And I didn't see a fuseable link either.

What exactly is it doing???  Mine was the engine would not start without playing with the solenoid, and then it would not shut off.  Did not have acceleration problems from the bad solenoid.
1994 U225
build #4514

Re: Fuel shutoff solenoid

Reply #17 –
I'm in Hudson, IL, just north of Bloomington. Talked with Trianna (sp) and he e-mailed a part of a print that isn't on the prints that I've had for years. Got a friend helping and we're still looking for the problem. The engine cranks and the hold side keeps the fuel valve open until I shut off the key. Only 9.6 volts so looking for a corroded connection.
Larry
1996 U295 36'
Build # 4805
Actually we sold it but just like to lurk
 

Re: Fuel shutoff solenoid

Reply #18 –
Found the relay along with the isolator board. Last bay on street side. Open it and lay down and look up behind the safe! The only way it would be more inaccessible would be to mount it on the roof between the air conditioners and the solar panels. Anyway, I'm going to order that part and then put it on and that should be that!!!
Larry
1996 U295 36'
Build # 4805
Actually we sold it but just like to lurk