You are correct. It can be bypassed though.That is fast and easy. once the parking brake is disengaged the high idle wont work correct?
Yea i put one in and you are right i would let it run for a couple before throwing it on, this was made for emergency service and tow trucks and other stuff like that, just not for warming truck up, i like it cause you can run a winch at full pulling power with this mod and other kind of things that may put some strain on low RPM runningI gotta say I'm not sure about this. I know if I start my truck when it's cold, it will idle on its own at 750 rpm's or so. After a couple of minutes, it kicks up to 1,000 rpm's. This may sound naive but to me, the logical only good thing this would be for is if you're jump starting another vehicle and don't want to sit in the truck revving the engine. The idea of using this feature when the truck/oil is cold presents problems, considering the injectors run off oil pressure. Again, experience with my '05 only, I know if I start that thing cold, it sounds like it's about to come un-zeused from its home and come out from under the hood so I certainly wouldn't be revving that thing when cold (which most would try to do the heat the truck/warm the engine up faster.
I'm an aircraft mechanic by trade and we have a number of engine related limitations that are based on oil temperatures and for a reason. I would think the same about a diesel engine that works off oil pressure.
Does any of that make sense??
Awesome! That's the type of info I was looking for.Yea i put one in and you are right i would let it run for a couple before throwing it on, this was made for emergency service and tow trucks and other stuff like that, just not for warming truck up, i like it cause you can run a winch at full pulling power with this mod and other kind of things that may put some strain on low RPM running
I put mine on a toggle switch...I don't have upfitters...I wish I'd have bought em insteadNot clear if this is what the OP was asking, but can this mod be done so that any time the parking brake is engaged, the truck will go into high idle?
If so, what color wire would i need to use as the live feed (parking brake light) and to which wire would i need to connect it to?
or can i just connect the wires shown in this write up and bypass the switch and get the effect i am looking for?
Why is that? Don't they both idle the motor up but one also locks the converter I think. Please explain why.Make sure you don't pick the pto wire...its orange I believe. I can't remember. I think the one you want is purple w a green tracer...just apply 12 volts...have the ebrake set and truck in park.. boom...1200 ish rpm idle.
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Yes...are your intentions to run a pto? Maintain constant voltage? Keep the heat hot? Idle for extended periods of time?Why is that? Don't they both idle the motor up but one also locks the converter I think. Please explain why.
Mine does that too. It starts out normal around 750 rpm and then after a minute or two it will kick up and modulate itself. I think it's in the logic of the ECM but I could be wrong.My truck idles high on its own when it's cold (I'm guessing around 40 degrees) but I wonder if there's any way to adjust the rpm on that.