Join Date: Apr 2012
Location: Grant, Nebraska
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Gearhead tuner & high idle/cruise issue
i have a 99 6 spd with 238/80 hybrids from unlimited and gearhead tunes to make it run. when matt did my tunes, i asked him to include an automatic high idle while below a certain engine temp which he did.
the issue i am having is the high idle doesn't seem to always be working. at first i thought it was a bad connection between the pcm and tuner, but i have now convinced myself it has something to do with the clutch switch. it seems that when the automatic high idle is working, the cruise control does not work. however, when the high idle does not work, the cruise seems to work fine.
i am pretty sure there is a two stage switch on the clutch pedal. one stage is engaged when pushed all the way, which is for the neutral safety starting circuit. the other is when the clutch is near all the way up. this is the one that kicks off the cruise when you start to push in the clutch. when the high idle is working, this one also kicks it out when you jump in and start to push in the clutch.
i replaced this switch and nothing changed, still intermittent problems. the thing that doesn't make sense to me is why one works while the other doesn't. it seems to me like they (cc and fast idle) would either both work or neither work.
can anyone shed some light on this subject? it's not keeping it from driving or anything, i just like things to work like they're supposed to.
all help is appreciated.
99 CCLB 4x4 6SPD
03 CCLB 4x4 6SPD
01 X 4x4