New 2014 Unlimited Rough Idle and engine light blinking
I just got a brand new Wrangler unlimited on thanksgiving (I have been driving it a lot so it has about 600 miles ) I started it up today and it started up fine, when I was at the first traffic light it started vibrating and the check engine light flashed on and off. The vibration goes away when I accelerated out of the stoplight. I think it is a temperature issue. The outside temp is 39║F and the transmission temp when this happened was 63║F and I believe the oil temp was 120║.
Could this be caused by the cold temps? I didn't wait at all for it to warm up. I just fired it up and went.
i had this happen once before, similar scenario and temperatures. My brothers 2012 also did the same thing. He found that when you start the engine for the first time after its sat long enough to be cold (winter time) he says dont move the Jeep until the tach drops under 1k (about a minute or two) then it wont do what we've experienced.
I called BS so i tried starting it and moving it immediately after i started it and sure enough it did it. He hasnt had it happen in 2 1/2 years so there is some method to his madness i have yet for it to happen again since ive started doing this!
My guess is the huge belt on this engine gets cold and loosens up a bit on the pulleys. Whe first started, it takes a minute or so for the belt to run smooth and everything in the engine as well. I know I got a belt 'flicker' in the cold, and my girl's car gets it bad.. we have to go a tighten her belt up every winter or it squeals. I had a dash light flicker I noticed today, tapped the gas pedal just enough to bump to 1k and it settled down and quit even after I let it go back to idle for 2 minutes.
I wouldn't let the problem go, it would be best to have it checked on, adjusting the belt won't take a dealer long if that's what it is.
2013 JKU Sport, billet, auto, 3.73, LSD, 315/75/16 Duratracs on MB 72, 10A springs, Bushwacker flatties
Yeah it was blinking then it turned to solid. My roommate seems to think it is a oil/transmission fluid problem so I'm going to check those fluid levels tomorrow. If those check out I will schedule an appointment with the dealership. I'll probably swing by an auto parts store and see what the trouble code it's giving is as well. Just so I know. Thanks for the insights everyone! I will keep this thread updated.
I picked up my 2014 rubicon unlimited on 12/2 and yesterday (12/11) was the first time I drove it since then (I have another vehicle I drive to work). Stopped to do some shopping on my way home yesterday. Left the store and was sitting behind a vehicle at a stop sign in the lot. I was in first gear with the clutch pedal down. The jeep started shaking real bad and felt like it was going to stall. Shifted into neutral and the same thing. Revved it up and then the same thing happened. Drove to the next store and shopped for about 20 minutes. Came out and started the Jeep and the check engine light was on. This was at 85 miles on the odometer, so that has to be some sort of record. Went straight to the dealership. Still haven't heard from them today. Needless to say, I'm not very happy.
CJD is near the bottom of JD Powers reliability but I've never really cared about that one report since that's what warranties are for and both durangos I've owned have turned out to be the most reliable vehicles I've ever owned.
Well the statistics caught up with me.
I drove our new '14 JKU Sahara home and it was fine. Next day, engine throttle control light came on and others, engine stumbling and went into limp mode. I couldn't believe a brand new car was getting towed to the dealer. They isolated it to the pcm and I had it back the next day with a new pcm. No problems since.
The day I was going to take it to the dealer the check engine light turned back off. Have driven a couple hundred miles since then and no problems. The guy at the dealership seems to think it might have been bad gas or something.
My '13 with 8300 miles did that last week after a cold soak at work. The misfire cleared after a minute or so. I have a scanner and got "pending" codes for multiple misfire and exhaust cam position sensor slow respond. It hasn't repeated this week.
I know the dealer filled it up for me before giving it to me. But this happened after my first tank of gas so I don't think that was it. It could've been the gas I got from Sam's Club but I don't know. It hasn't happened to me since and I couldn't get the code to show up on the dash… I'm not sure if I'm doing it wrong or what.