Cruise control servo instead of hand throtle

[cccj]

I just installed a under the hood welder in the XJ. I would like to use the Cruise control servo to act as an idle controler. I know some of you smart folks would know which wires I would have to tap into to place a rhiostat into the circuit to make all that work. Any help at all would be greatly appreciated. Thanks.

 

[Willis]

I don't know about the cruise thing, but it would be nice. I once worked on a mobile x-ray vehicle. It had a swich on the dash, when switched, took the engine up about 300-400 RPM. I thought it would be cool to just flip the switch so I checked out what made it do it. Under the hood was an electric solenoid with a cable. The solenoid was made by a company called Vanner (vanner.com). I looked them up on the web, found the auto-throttle, and emailed them about it. Never got a responce. You may have better luck, and if you do, let me know what it costs (that's all I asked them?).

Steve

 

[ChiXJeff]

If you read up in the FSM, there is a connection used with the Police package. It bumps the idle up to around 1,000 RPM to boost the alternator output for use with lights, etc. But I don't think this is what cccj wants.

I don't think it's going to be as simple as just tapping a rheostat or electronic gizmo into the circuit. It's a vacuum servo, and you'll need active feedback from something to keep the engine speed steady.

 

[sidriptide]

heres something i thought of using as a and throttle... when i was in the Coast Guard we had a PTO on the engine to run a fire/water pump... the throttle was cable operated and it was a fine thread screw wheel that would increaseRPM as you turned it out.. very smooth accurate control of rpm... to release it all you did was push the button in the center of it and push it back in.. simple push/pull morse-type cable.. probably a fairly common item in the heavy equipment market since just about everything uses a PTO of some sort.. i think there would be too much involved trying to adapt sensors and such to hold the vacuum steady for a manual throttle control.. what about modifying it to a push -pull cable setup..
mike

 

[scampbell53]

First off Sorry Brian, My buddy uses my computer and I posted this under his name. I don't plan on using it as a high idle for wheeling, just for onboard air and welding. I am running a second altenator and when I am welding the motor isn't dragged down a bit. I have the welding box mounted on the roll cage just inside the rear hatch, so if I need a little more juice I have to walk up to the drivers seat to adjust the idle. I want to be able to do it from the hatch or make a remote so I can take it to where I am welding. I will ring out the wires tomorrow and let everyone know what I come up with. I just figured someone had done it befor.

 

[buster]

A big red brick on the right pedal should do it :spin1: