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Old 02-11-2012, 10:18 PM   #1
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Idle up control switch

I have had several people ask about my idle up switch so here is a short thread on what I did. I know that that many have a hand throttle but I didn't opt for it as I didn't like the finished look of one in my jeep as a daily driver. I did however want something to idle up the engine when I was either using my winch or my air compressor. I made a bracket that bolted to the factory throttle linkage bracket that would place the solenoid over the throttle itself near were the throttle cable connects. I welded a nut on the bracket for the solenoid screw into and added another nut on the solenoid shaft to lock it down.
In my search for a solenoid I found that there are many options and styles that range in price to over $100 dollars. Since I was on a budget price was a key factor. I ended up finding a solenoid from autozone. I am pretty sure this is the one that I used, Duralast/Idle Air Control Valve (E406) |

It only holds the throttle open at a higher idle. It won't push the idle up, I just have to rev it up a little and then with the switch on it holds the idle where you have it set. Autozone seemed to be the best place that actually had photo's online. There are tons of different ones and some get pretty expensive. The one I used was like $25.

As for the switch it is actually used for RV's and Big Trucks with diesel engines. I swapped the switch cover to an on off switch as originally it was a momentary switch to either idle up or down. I found the switch on ebay. Idle Up on the switch is on an powers the solenoid. Idle down is off.

Overall I am satisfied with the operation and am happy with the mod. It does seem to help when I have used my winch and running the air compressor to speed things up with my factory alternator. Also I have used it when I have had to give someone a jump start with a pretty dead battery.
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Old 02-18-2012, 06:31 PM   #2

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Great idea.Thanks for the write up.Where can someone find the switch?

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Old 02-19-2012, 11:37 PM   #3
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I came across it on eBay. Diesel RV and big trucks use them so an RV dealer may have them. I think I searched idle up switch and came across it.
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