[Eric]

We replaced the SRS this summer on our DDEC V. Looking at the engine it’s on the right side just to the left and below the oil dip stick – if I recall correctly. I needed a mirror to see it since it is behind the “fly wheel”? cover. It senses top dead center. We got a check engine light while driving but the engine ran normally. It wouldn’t start though after it was shut off since it lost the timing reference. If I recall the TRS is down low on the passenger or right side of the engine. Both are usually replaced together.

I don’t know if the DDEC I is simialr to the DDEC V though.

[Gerald]

I should have mentioned 8V92. Maybe someone can help.

[Chas]

Both sensors are located under the ECM and are behind the pulley on the left camshaft as you look at the engine from the rear. They are held in a bracket and are adjustable a little bit.

The ECM needds to be removed to gain access to the hold down bolt.

[Larry & Diane]

Thank you so much. That seemed to be the location I could determine but it’s nice to have confirmation. To trace down the issue I have to unplug the SRS and take another reading to try to determine if there is a short, and open line or a bad SRS. I have had problems for years after Stewart & Stevenson did some work and it’s always seemed like they changed the timing somehow. The Pyros show the engine exhaust temps much higher than before S&S did whatever they did. Not sure why this error code has not showed up before but it would be nice if it were some part of the way to a solution.

If I get some time off work I will dig in and see what I can find. Does anyone know if the SRS and TRS parts are still available and if so where I should look for a source should it be necessary?

Thanks again.