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Topic: King cruise control  (Read 1762 times) previous topic - next topic

Re: King cruise control

Reply #25 –
Hi Journey Roam,

Understand your assumption.

Actually, the fuel solenoid work-around only applies to non-computerized C8.3 engines, not used much after 1997 model year on U270, U295, & earlier models. Other coaches need not concern themselves with fuel solenoid issues.

To not get stuck at fuel pumps, border stops and other critical areas, owners of these coaches would be well served to locate the solenoid on right side of engine from the open engine compartment door. That is one of the reasons we do not turn off engine at these types of stops.

Prevention always pays big rewards. . .

Re: King cruise control

Reply #26 –
Doug, all that's under the accelerator pedal that they are calling a "control unit" is a square electronic TPS with 3 wires running from it to the King Box. TPS  or Throttle Position Sensor is what every vendor I've talked to call it. The mechanic that worked on your coach may have used a different name for it.
Dub McBride 1996 270

Re: King cruise control

Reply #27 –
Quote from: Dub –
Doug, all that's under the accelerator pedal that they are calling a "control unit" is a square electronic TPS with 3 wires running from it to the King Box. TPS  or Throttle Position Sensor is what every vendor I've talked to call it. The mechanic that worked on your coach may have used a different name for it.

Dub, you may be right about that I'll have to get under and take a look.
Doug W.
96 36' U270 CSGI #4946
04 Toyota Tacoma 4x4
PNW

Re: King cruise control

Reply #28 –
You can see the TPS under the pedal on the right side.
Dub McBride 1996 270

Re: King cruise control

Reply #29 –
Quote from: Dub –
You can see the TPS under the pedal on the right side.

Ok, Williams control throttle position sensor. Makes sense that's what they replaced and referred to as control unit or box.

Some crossover part numbers: 131040, 132330
Doug W.
96 36' U270 CSGI #4946
04 Toyota Tacoma 4x4
PNW

Re: King cruise control

Reply #30 –
FYI, my understanding is the King Throttle Control box is only used by mechanical C8.3 engines on about 1997 and earlier model U270 & U295 coaches.

The front throttle pedal sends an electric signal only to King Control.

King Control sends an electrical signal to Allison by simulating the electric current the Allison Throttle Position Sensor (TPS) that would come from a mechanical TPS device. The front throttle pedal does not talk to the Allison Transmission.

Re: King cruise control

Reply #31 –
That's the way I understand it Barry, In ordering the parts for my air throttle set up per JOR's parts list, one of the parts is an Allison Throttle Position Sensor, It's a pricey part that I got from Stewart Stevenson. I don't know if the existing TPS in the engine room is in the King Box or on the transmission or if I will have to delete or remove it when I install the new one I have from Allison..... Not to be confused with the one on the current accelerator pedal which is called TPS as well but only sends signal to the king Box. This will be a question I will ask John Orielly to clear up my confusion.
Dub McBride 1996 270

Re: King cruise control

Reply #32 –
Quote from: Dub –
I don't know if the existing TPS in the engine room is in the King Box or on the transmission or if I will have to delete or remove it when I install the new one I have from Allison.....

Looks like the TPS data is fed from the King control box. Mine definitely does not have the separate cable driven TPS as in other years.

 In one of Barry's postings he writes the king circuit board has a built-in throttle positioner sensor by creating variable voltage for the transmission based on throttle movements.

 Steve @ KC  in the past also confirmed TPS data is fed from the King control box.
Doug W.
96 36' U270 CSGI #4946
04 Toyota Tacoma 4x4
PNW

Re: King cruise control

Reply #33 –
The electronic part of this project has me studying. On the job training.
Dub McBride 1996 270

Re: King cruise control

Reply #34 –
The accelerator pedal has a Position Sender Module.
This module sends a variable voltage to the King Control representing pedal position.
The King Control positions the throttle lever accordingly to pedal position data supplied.
King Control in turn provides the Throttle Position data to the Allison.
The Allison provides Vehicle Speed data to the King Control.
If converting to an Air Throttle, a new Throttle Position Sensor (TPS) must installed to replace the information formerly provided by the King Control to the Allison.
Charles
W5CRY
1997 Dynasty - Sold

Re: King cruise control

Reply #35 –
That sums it up Charles. I had another visit with John this morning and he explained like you just did .Spending this time that it's to hot in my shop to work studying. The instructions are thorough but it is a lot to absorb, working on that now.
Dub McBride 1996 270

Re: King cruise control

Reply #36 –
Quote from: Doug W. –
I'll be getting in touch with him also since I have a spare unit with little time on it. Original owner of my coach switched it out for some reason when they were available. Previous repair records indicate that the king control unit was replaced before I took ownership at 50k miles. So I assume it has little wear on moving parts. It would be nice to have one in the spare parts bin ready to go.

Update:
Picked up Bruce Beane early A.M. Wednesday and headed for Ferry crossing Puget Sound for a visit with Brent @ Advanced Diagnostics in Snohomish, Wa.
He has a 2 bay shop on his residential property and was ready to bench test the unit when we arrived. After a half hour with his electronic test equipment hooked up we found the King control unit to be good with no faults. Brent seems to understand the workings and parts associated with the King control. I would recommend to anyone with a non-working unit that wants to stay with the King control throttle assembly send him your unit for him to take a look at and repair if necessary.






Doug W.
96 36' U270 CSGI #4946
04 Toyota Tacoma 4x4
PNW