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Topic: Mystery sensor connector (Read 658 times) previous topic - next topic

Mystery sensor connector

I was down working on something else and happened to brush against the wire plugged into this sensor, though it wasn't really plugged in when I reached for it it just fell apart.
Anyone know what the sensor is for? It's right below the exhaust manifold at the rear of the engine.
Dylan and Aimee
2001 U320 4013
Unit# 5896
450 HP/IFS
 

Re: Mystery sensor connector

Reply #1 –
Could it be a block heater? I don't have a M11.
1998 36 foot U270 Build No. 5328 WTFE, 900 watts solar, Victron controller, B2B, bat monitor, 600 AMPH lithium with 2018 Chevy Colorado toad, SKP #110239, Motorcade #17781, 2021 Escape 17B for when Coach is broken down and campsites are too small, retired and full-timer since Dec. 2020. Part of RV family since 1963.

Re: Mystery sensor connector

Reply #2 –
Was it a 120 volt wire? See if it goes to the electrical plug on the firewall.
previous 1984 35 ft ORED 250 HP 3208 Cat       
previous 1998 40 ft U295 CAI 325 hp Cummins
previous 2003 40 Ft u320 build #6140 450 Cummins M11.                                                         
1999 Mazda Miata
Ron, Nancy, Tipper the cat, Max The dog
1997 U 270 36 ft build number 5174 8.3 Cummins

Re: Mystery sensor connector

Reply #3 –
Well tried to take it out and coolant came out so quickly screwed it back in. I did notice it was warm in the area...I had turned on my AH engine warmer just to see if it was working and there is a hose just to the left of this sensor that is warm. Is the 120v engine block heater next to the AH hose, kinda makes sense it might be but not sure how that all works.
....or is this just the coolant temp sensor?
Dylan and Aimee
2001 U320 4013
Unit# 5896
450 HP/IFS
 

Re: Mystery sensor connector

Reply #4 –
Quote from: red tractor –
Was it a 120 volt wire? See if it goes to the electrical plug on the firewall.
If a 120 volt wire to an outlet inside engine compartment next to foot of bed, then definitely the block heater.
1998 36 foot U270 Build No. 5328 WTFE, 900 watts solar, Victron controller, B2B, bat monitor, 600 AMPH lithium with 2018 Chevy Colorado toad, SKP #110239, Motorcade #17781, 2021 Escape 17B for when Coach is broken down and campsites are too small, retired and full-timer since Dec. 2020. Part of RV family since 1963.

Re: Mystery sensor connector

Reply #5 –
Looks like a temp sensor to me.  Looks much too small for block heater. If you run the coach and the temp gauge is not working you found the answer.

Cummins Temp Sensor

Re: Mystery sensor connector

Reply #6 –
On reply 3 the third picture just shows your block heater on the left under the heater hose.
That looks like it is a sensor and on my M11 there is just a pipe plug. It must be some type
of temperature.
Peter and Frieda Morin
1999 36ft. U320 Foretravel
Build # 5436
1998 Suzuki Sidekick Sport

Re: Mystery sensor connector

Reply #7 –
Quote from: oldguy –
On reply 3 the third picture just shows your block heater on the left under the heater hose.
That looks like it is a sensor and on my M11 there is just a pipe plug. It must be some type
of temperature.
It's definitely a temp sensor, I tried to pull it out and coolant started pouring out so i screwed it back in. I guess I should call cummins and track down what sensor it is so I can order it. Is the coolant temp sensor that sends signal to the engine temp gauge at dash somewhere else on yours?

 
Dylan and Aimee
2001 U320 4013
Unit# 5896
450 HP/IFS
 

Re: Mystery sensor connector

Reply #8 –
I think I have a couple and I haven't figured where they go. The ECM gets one.
Peter and Frieda Morin
1999 36ft. U320 Foretravel
Build # 5436
1998 Suzuki Sidekick Sport

Re: Mystery sensor connector

Reply #9 –
For future reference,you can find Cummins parts books on Ebay,they come in handy to identify parts.
96 U270 BUILD 4810
85 380SL
Drummonds TN.

Re: Mystery sensor connector

Reply #10 –
Go here and create an account:  Cummins QuickServe Online

Once you have an account, add your engine serial number to your account ( you can have 5 as an end user) and then you can do parts lookups by exploded views/diagrams on Cummins website with part numbers.
Keith
2003 U320 38' #6197

Re: Mystery sensor connector

Reply #11 –
Quote from: WS6_Keith –
Go here and create an account:  Cummins QuickServe Online

Once you have an account, add your engine serial number to your account ( you can have 5 as an end user) and then you can do parts lookups by exploded views/diagrams on Cummins website with part numbers.

I did this earlier today, was able to see where the sensor is but it doesn't tell you what it's for. The wires on the sensor are labeled COL 1A 29289 and COL 1B 29289 but my wiring schematic for my coach doesn't have those listed. It was labeled Coolant temperature pickup port. There was also the sensor port labeled Coolant temperature sensor in the front of the engine.


Dylan and Aimee
2001 U320 4013
Unit# 5896
450 HP/IFS
 

Re: Mystery sensor connector

Reply #12 –
Looks like a pT cruiser temp. Sensor connector . I use those for Microsquirt v installs  . 
Might be a simple dodge sensor.

Re: Mystery sensor connector

Reply #13 –
Quote from: nbluesky –
Looks like a temp sensor to me.  Looks much too small for block heater. If you run the coach and the temp gauge is not working you found the answer.

Cummins Temp Sensor
I did finally start her up, temp gauge was working so that sensor is for something else.
Dylan and Aimee
2001 U320 4013
Unit# 5896
450 HP/IFS
 

Re: Mystery sensor connector

Reply #14 –
My temperature gauge on the dash doesn't read correctly and I never did find out where the
sensor is for it. As I have a Silverleaf it's not that important but I will try and find out where all
the signals come from sometime when it is warm and dry.
Peter and Frieda Morin
1999 36ft. U320 Foretravel
Build # 5436
1998 Suzuki Sidekick Sport