08 Jk auto in second gear no codes - Jeep Wrangler Forum

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Old 09-02-2014, 05:03 AM   #1
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08 Jk auto in second gear no codes

Have an 08 petrol auto JK wrangler that drives around in second gear. It is not displaying any CODES. Ways around the problem are remove red market plug on PCM for 10 seconds, this resolves problem for one key resolution and I can go for along drive problem comes back as soon as key is turned off. 2nd way around it is the cycle the key twice really fast. I also only get one drive out of this. I have just installed a sprintek charger with a hypertech tune. the problem is still present after a return to stick tune. any ideas ? thanks in advance
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Old 09-02-2014, 07:27 AM   #2
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Try uninstalling your programmer and see if problem goes away. If it does try reloading the program and see if it stays away. If the problem returns you probaly have a faulty programmer and I would contact hypertec.

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Old 09-02-2014, 09:10 PM   #3
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yer it's be uninstalled and installed over ten times! the problem is still there with it uninstalled! hyper tech are looking and the flash but they have been doing it for a week now. I also uninstalled and got the dealer to reflash the PCM. I also have all the gear indicator lite up on the dash so it looks like it is in ever gear.
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Old 09-03-2014, 01:28 AM   #4

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Something is definitely not right. It sounds like your rig is in limp mode - if the computer detects a transmission issue it will lock down into 2nd gear so (albeit slowly) you can "limp home".
2014 JKR Granite Crystal, 5.13 Auto: RK X Factor 2.5 Inch Lift, Artec Front and Rear Truss, Artec Rear LCA Mounts/Skids, Poison Spyder HD Crossmember, Rock Hard Gas/TC/Evap/Oil Skids, Rough Country Diff Sliders, Nitto Trail Grapplers 37x12.5x17, Pro Comp 97 Series Wheels, Synergy Weld On Rear Trackbar Bracket, PSC Hydroassist, T6 Aluminum Tie Rod, G2 Gold Chromoly Axle Shaft/RCV front axle shaft, Dynatrac Ball Joints, 1310 driveshafts, Artec Rear Upper CA Mounts, Warn VR8000.
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