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Topic: What’s this sensor for? (Read 499 times) previous topic - next topic

What’s this sensor for?

On my 2000 Cummins ISM 450 I have this sensor at the rear of the engine that is leaking oil.
I have looked through my engine manual and it doesn't talk about it.
The sensor seems loose but I can figure out how to tighten it up. Is this something I should be considered about?
For the mean time I wrap a shop towel around the sensor to help it stay a little cleaner.
Thanks for your help.
Alan Fink
Waupun, WI
2000 Blue Bird Wanderlodge  LX40
2018 F150 4x4
2020 Jeep Wrangler Unlimited  Rubicon JL

Re: What’s this sensor for?

Reply #1 –
That isn't a sensor it is wires going into the head probably for the injectors. Properly a o ring.
I see you have a Jake Brake.
Peter and Frieda Morin
1999 36ft. U320 Foretravel
Build # 5436
1998 Suzuki Sidekick Sport

Re: What’s this sensor for?

Reply #2 –
Quote from: oldguy –
That isn't a sensor it is wires going into the head probably for the injectors. Properly a o ring.
I see you have a Jake Brake.

Yes I do have a Jake Brake.
 I take it the o ring is in the head.  How do I get at the o ring?
Are those wires like a plug and I gently unplug them from the head and that's where the o ring is.

Thanks
Alan Fink
Waupun, WI
2000 Blue Bird Wanderlodge  LX40
2018 F150 4x4
2020 Jeep Wrangler Unlimited  Rubicon JL

Re: What’s this sensor for?

Reply #3 –
That's the front of the engine, the engine is in backwards. I went and looked at my engine but
I don't have those wires there. I'm assuming there is an O ring. I don't know if you can get at it
taking the tappet cover off. Someone else may have worked on it before and can give you more
advice. I have a Jake also which I installed.
Peter and Frieda Morin
1999 36ft. U320 Foretravel
Build # 5436
1998 Suzuki Sidekick Sport

Re: What’s this sensor for?

Reply #4 –
Any Cummins tech familiar with that engine could tell you in a heart beat.

Also, may be able to find the information on Cummins Quick Service with your engine serial number.
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: What’s this sensor for?

Reply #5 –
There is a post about that wire loom and oil leak. I can't find it but it had the o-ring part number and I bought one for when i adjust the valves to install it.
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: What’s this sensor for?

Reply #6 –
Unsure if this is it, but it should get you closer. At the bottom is a o ring that is frequently bought together. Check that. Enter your ESN to confirm.
CSSNA Community
Jason
2000 U295 36' Non-slide  ISC350

Re: What’s this sensor for?

Reply #7 –
Quote from: craneman –
There is a post about that wire loom and oil leak. I can't find it but it had the o-ring part number and I bought one for when i adjust the valves to install it.

I did find some post regarding wire loom oil leak. I need two o-rings or a new wiring harness.
I need to take a closer look at what shape the harness is in.
 Thanks for all your help.
Alan Fink
Waupun, WI
2000 Blue Bird Wanderlodge  LX40
2018 F150 4x4
2020 Jeep Wrangler Unlimited  Rubicon JL

Re: What’s this sensor for?

Reply #8 –
Quote from: Big Al –
I did find some post regarding wire loom oil leak.
Big Al,

I found the thread linked below that seems to deal with this subject.  It may be the same one you found...

oil leak ISM 450

1993 U280 SE 40' WTBI, Build: 4359
C8.3 300hp, 6-Speed, Exhaust Brake
960 watts on the roof (6 x 160)
Sorento (or BOLT) on a Kar Kaddy SS
"Nature abhors a vacuum"
 

Re: What’s this sensor for?

Reply #9 –
Good hunting Chuck, that is where I got the seal information from David's post.
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean