6V92TAC DDEC II sensors

[Iceni John]

My engine will be worked on soon to repair its camshaft(s) and/or camshaft gears, and while it's apart I want to replace some of its DDEC sensors as a preventive measure, even though they're all working OK now.   (I'll keep the old sensors as usable spares for emergencies.)   The sensor I definitely want to replace now is the SRS/TRS because it's completely inaccessible behind the camshaft pulley.   I'm having difficulty finding part numbers for 6V92TA sensors;  even Detroit doesn't seem to publish a list of them, even in their DDEC II Troubleshooting Manual.   Are the following part numbers correct, and does anyone here know the missing part numbers?

Air temperature               23515250
Coolant level                    23503510
Coolant temperature       
Fuel pressure
Fuel temperature
Oil pressure
Oil temperature               23518092
SRS/TRS                         23503240
Turbo boost                     23528418

The throttle position sensor is part of my Williams WM-526 accelerator pedal assembly, so I'll check Williams' website for that sensor's number.

I'll also buy two more valve cover gaskets (for the tall aluminum VCs):  I think their part number is 5104018.   Is that correct?

Many thanks, John

[chessie4905]

Can that be updated to III or IV while you are at it?

[luvrbus]

Can that be updated to III or IV while you are at it?

If he has a spare DDEC ll it wouldn't be worth the hassle,the wiring harness alone cost a 1000 bucks he would miss the sound of the DDEC ll too, the only good thing he would have is the ECM controlling the Jakes without the Jake controller that goes bad and are no longer made,plus the DDEC lll or lV are 12 to 32 volts where the DDEC ll is 12 volts only, alot of the ll's get fried on the 24v system's when people make a small mistake and wire one 24v.All the sensors expect the TRS you buy at any good parts store the GM cars and pickups used the same sensors

[Bill Gerrie]

I found the following in the 92 parts book;
Turbo Boost - 12219935
oil, fuel, coolant temp - 23518092
oil, fuel, pres - 23532797
TRS - 23503240
coolant probe - 23503509 - 1/4" NPT
                    - 23503510 - 3/8" NPT
coolant module - 23505265
Hope this helps you. The TRS sensor needs a special tool to space it.

[Iceni John]

If he has a spare DDEC ll it wouldn't be worth the hassle, ...

Actually I do have a spare DDEC II ECM that was in an identical Crown.   I bought it because it was cheap ($300!).   I follow the umbrella theory:  if you have one you usually don't need it, but if you don't have one, guess what...

John

[Iceni John]

I found the following in the 92 parts book;
Turbo Boost - 12219935
oil, fuel, coolant temp - 23518092
oil, fuel, pres - 23532797
TRS - 23503240
coolant probe - 23503509 - 1/4" NPT
                    - 23503510 - 3/8" NPT
coolant module - 23505265
Hope this helps you. The TRS sensor needs a special tool to space it.

Excellent, thank you so much!   It's good that the three temperature sensors are the same and the two pressure sensors are the same:  that makes sense.

Is the SRS/TRS tool the same for all 4-stroke and 2-stroke Detroits, or are they for specific engines?

John

[Bill Gerrie]

John
As far as I know the 2 stroke is the same. I can get you the number from mine if you need. The 4 stroke might be different. I'm not sure as I have never worked on them.   

[Iceni John]

John
As far as I know the 2 stroke is the same. I can get you the number from mine if you need. The 4 stroke might be different. I'm not sure as I have never worked on them.

I've not yet found the part number for the tool, but I did find a website that gave the gap needed (0.020" / 0.5mm).   If the tool's not crazy-expensive I would like to get it, even though I may use it only this one time.   Yes, could you please get me the tool number whenever you can  -  many thanks.

I bought a genuine Detroit/Tognum SRS/TRS on eBay this morning for only $90!

John

[luvrbus]

You saved 5 bucks they are $95.00 from Detroit ,if you are looking for OEM parts there is new player in the internet game Kirby owns both Stewart.Stevenson and United Engine and sells OEM parts from their web under www.DieselDash.com 

[Bill Gerrie]

John
The tool is Kent-Moore #J-39815

[luvrbus]

John
The tool is Kent-Moore #J-39815

You can make those John I have one made by Monoco Tool in OR., I have seen guys make one from a nut driver and a grinder ,they are pricey for what you get

[Bill Gerrie]

All it is is a 1/2" piece of rod with a groove in one end.

[luvrbus]

All it is is a 1/2" piece of rod with a groove in one end.

With a little fancy knurling on the end,mine wasn't worth the $50.00 I paid

[Iceni John]

All it is is a 1/2" piece of rod with a groove in one end.

With a little fancy knurling on the end,mine wasn't worth the $50.00 I paid

I've made fancier tools than that!   I think I'll make my own:  eBay has them for $65 to $134.   Thanks for the suggestion!

John

[Iceni John]

If he has a spare DDEC ll it wouldn't be worth the hassle,the wiring harness alone cost a 1000 bucks he would miss the sound of the DDEC ll too, the only good thing he would have is the ECM controlling the Jakes without the Jake controller that goes bad and are no longer made

My bus came with a simple cube relay instead of a Jake controller whatsit, and it works just fine!   I don't think it's original, so maybe the school district replaced the controller with a relay.   The only thing unusual is that the relay has a diode or resistor between two of its pins, presumably to stop pulses going back to the ECM and damaging it.

John