I think that's normal, that when it's on auto it doesn't show what vent options it has selected. Similar to how it deals with recirc control on auto, it will use or not use recirc but it doesn't turn the light on the button on or off with the changes. Most people never pay attention and changing lights would disturb the average person so that's how it's set up. It's similar to how many cars operate the dash "gauges".... The computer reads the sensor and the computer runs the gauge and the needle never moves unless the change is high enough to be "out of range". At least the jeep temp gauge actually moves.Never had a vehicle with so have never used auto temperature control but i tried it out the other day on my TH.
After i enabled it, i looked at the climate page and none of the vent options there were hi-lighted! WTF!
After more poking around, the defrost vent somehow got hi-lighted for some unknown reason to me.
Is this all normal?
Looked at the Owner's manual and the only thing i got was its automatic, leave it alone and trust it. H'mm!
You're likely correct.I think that's normal, that when it's on auto it doesn't show what vent options it has selected. Similar to how it deals with recirc control on auto, it will use or not use recirc but it doesn't turn the light on the button on or off with the changes. Most people never pay attention and changing lights would disturb the average person so that's how it's set up. It's similar to how many cars operate the dash "gauges".... The computer reads the sensor and the computer runs the gauge and the needle never moves unless the change is high enough to be "out of range". At least the jeep temp gauge actually moves.
I would guess it does. Not uncommon, although digital gauges should be much better than analog.It is possible the Tach lags the actual RPM, but you should see the needle go above 6k after the shift, it lagging the rpm dropping...
What is the actual redline for the vehicle, where on the tach does it turn red?
It bounces off the limiter...LOL. Ask me how I know.What happens if you go full throttle in 1 and just keep your foot down and don't shift? Does the rev limiter kick in and just let you run along at 6k? Or does it still bog somehow because you're trying to give it full throttle at or beyond redline? (No, I don't want to try this for myself to find out. You do it.)
Exactly. I don't remember at what rpm it actually hit the limiter, but it stuttered a bit before I shifted and all was good.By "bounce off the limiter" do you mean run to 6k and then rev back a bit, thus perhaps producing the "bog" some have described? I think I did that coming off a light once having forgot I had it in M, and was so flustered by it I almost panicked.
p.s. So your SRT basically overrides the M and shifts automatically? That's interesting. And surprising. Do current SRTs behave similarly?
Variable Valve Lift? Or Variable Valve Overlap? or Variable Valve Duration?....I asked him why the Cherokee V6 was rated at less HP then my GC TH V6.
One thing he mentioned is in addition to variable valve timing, the GC V6 also has variable valve 'lift'.
He explained how it works but since forgot the whole explanation.
Seem to remember something about dual cam lobes/ cylinder/ valve?
Curious if anyone here knows in detail how this exactly works.
Yea, but its climbed from about 30% to 40%, there is still a lot of energy going out of the exhaust pipe....Today's internal combustion engine i think has just about reached its peak for efficiency and the HP:displacement ratio. But who knows what future IC engine improvements are to come.
The article seems to imply this has been added to the 3.6L in 2016. That might explain why the photo I went back and looked at for the 3.6L valvetrain doesn't show those cams and rocker/follower arms.... ...it is different from some of the devices I have seen and talked about, but seems to work just as well....Mongo,
the tech used the word lift and i think dual cam lobes which is why is i was surprised and baffled being around, maintaining and rebuilding engines over the last bunch of decades.
Sounds like mission improbable to me to accomplish that but then again the modern internal combustion engine is a far cry from the earliest engines.
After checking out Google, to my amazement variable lift (vvl) technology is a reality.
Guess sometimes you can at least show this old dog new tricks. lol
Fiat Chrysler Automobiles
Fiat Chrysler Automobiles added two-stage valve lift (VVL) to the 2016 update of its Pentastar engine along with improvements to its variable valve timing (VVT) system.
.....Fiat was the first auto manufacturer to patent a functional automotive variable valve timing system which included variable lift. Developed by Giovanni Torazza in the late 1960s, the system used hydraulic pressure to vary the fulcrum of the cam followers (US Patent 3,641,988). The hydraulic pressure changed according to engine speed and intake pressure.....
Here's a Pentastar video which gives a clue, note the cam lobes.
The next iteration of the 3.6-liter Pentastar V6 will feature variable valve lift to boost low-end torque and improve fuel economy. Check out the video.www.enginelabs.com
The article also mentioned the latest Pentastars have an 11.3 compression ratio!
Gonna try premium gas next fill up and see if it makes any difference.
The tiger shark engine is a 4 cylinder which i understand includes VVT and VVL, a big improvement over the previous anemic 4 cyl engine so called the 'world engine' i had in my old '14 Patriot.VTEC is actually variable lift and timing. I believe the oil pressure causes a different set of arms to actuate the valve further at higher RPMs.
I have to wonder if the dude @moparado was chatting with was confused with the tigershark engine that has electronic intake valves that can open and close at any time and as much and as little as necessary. The Cherokee V6 is less HP because it's a 3.2 V6 and the GC is a 3.6. Otherwise they're identical.
Unexpected find: When you pull the small storage cubby out of it's placement on the driver's side of the cargo area you will see a small steel cable with a finger loop at the end of it. This is an emergency release for the the gas cap lid.I've had my GC just about a year now and when backing out of my garage like i've done dozens of times before i discovered something new today.
Namely when the Jeep is put in reverse, the side view mirrors tilt down lower to view the rear wheel area.
Put it back in drive and the mirrors tilt back up to normal driving mode.
Probably to make sure while backing up the family dog is not behind the rear wheels or the any other obstructions.
Excellent find!Unexpected find: When you pull the small storage cubby out of it's placement on the driver's side of the cargo area you will see a small steel cable with a finger loop at the end of it. This is an emergency release for the the gas cap lid.