allison code 2112
hello, i have a 1994 thor with a cummins bt6/allison 3060-d code 2112 set and it says check the tps, does anyone know where to find the tps, its not on the fuel pump or on the accl. please help
Forum Discussion
Without more information, it seems that your setup is similar to mine, so here is some information based on how mine is laid out and the problem that I encountered.
Starting at the fuel injector pump, find the throttle linkage. Attached to that linkage should be a cable that leads to the throttle position sensor which is a totally enclosed electronic box about 6X6X6 inches. In my case this is mounted at the transmission end of the engine and up at valve cover height.
Before going any further check that the the throttle position sensor mounting bracket is OK. This bracket is a metal piece about 1X1X2 inches mounted near the injector pump. This bracket has a pin that connects to the above mentioned cable via a slotted metal cable end. In my case the pin was worn to about half the diameter because the slotted cable end was wearing thru the pin. This will produce errors in the feedback that the cable connection gives to the sensor. This part is available thru Cummins dealers or at RV Chassis Parts. Hope the problem is as simple as this.
Starting at the fuel injector pump, find the throttle linkage. Attached to that linkage should be a cable that leads to the throttle position sensor which is a totally enclosed electronic box about 6X6X6 inches. In my case this is mounted at the transmission end of the engine and up at valve cover height.
Before going any further check that the the throttle position sensor mounting bracket is OK. This bracket is a metal piece about 1X1X2 inches mounted near the injector pump. This bracket has a pin that connects to the above mentioned cable via a slotted metal cable end. In my case the pin was worn to about half the diameter because the slotted cable end was wearing thru the pin. This will produce errors in the feedback that the cable connection gives to the sensor. This part is available thru Cummins dealers or at RV Chassis Parts. Hope the problem is as simple as this.
