I have a 1999 4.0 TJ i just bought it a month ago and i was wondering at what rpm should i be shifting at during normal driving? i dont have the owners manual so anything you can clue me in on that i might need to know would help alot
Does a little yellow arrow on your gauge cluster in the top right come on? My TJ has one and it's a "shift indicator" although I've been driving 5spd for years and find it annoying, it's helpful for new drivers.
p.s. is there any easy way to make that light stop turning on? I find it distracting at night.
How does it determine when to turn that light on? I've seen it turn on as low as 1300 RPM, when shifting would lug the engine badly. AFAICT it is the "if I were an automatic transmission you would be fighting with me now" light.
Ours turns on at 30 mph in 4th gear so it 'must' just be pointing the way. :-)
I believe it relies on vacuum pressure from the way it acts but could be mistaken, if rpm were in there it wouldn't come on at 'fast idle' rpm speeds I wouldn't think.
Ours had a vacuum front axle disconnect too and we had to futz with the gas pedal sometimes to get it to turn off the 4x4 light and unlock.
Mike
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