Auto stop failure, now check engine light.

[25rawls]

I hope this works out for you but replacing a rocker arm because of a misfire seems odd to me. The rocker arm is a mechanical thing. It is rather binary in whether it is working or not. You can definitely break a rocker arm but then it is broken and your valve wont open. A misfire like this is 99.95% of the time electronic related. They will probably start replacing sensors and ignition components and eventually stumble onto the problem. I wouldn’t worry too much about it however. Before cars had the advanced electronics they do today the only way you knew it had a misfire was if you could feel it. Most people never felt it and it stayed that way for years. The quickest way to discover what it is would be for the part that is causing it to completely fail then they will know what it is but that probably wont happen. I’m sure it’s annoying and I will be mad if my truck starts doing it but I would just drive it. They will put out a TSB about it eventually and then you can bring it in and get it fixed.

my he only time I get the misfire was after a harder than normal acceleration. Like merging onto the highway and going from 30-60 to get into traffic. That is what cause the initial few lights. The light would reset and the motor would run fine after turning off the motor and restarting the Jeep. Before taking the Jeep to the dealer they light cane on and stayed on for a couple days. I am still waiting to get it back. Allegedly it is suppose to be finished today. I am not holding my breath since I almost feel what you are saying is that initial repair did not fix the problem.

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[Koja]

Just had mine in the shop for a week, Misfire and auto shut off acting up. still no idea they couldn't replicate it. so I just had it documented. I'll keep taking it back every time

 

[ShadowsPapa]

I hope this works out for you but replacing a rocker arm because of a misfire seems odd to me. The rocker arm is a mechanical thing. It is rather binary in whether it is working or not. You can definitely break a rocker arm but then it is broken and your valve wont open. A misfire like this is 99.95% of the time electronic related. They will probably start replacing sensors and ignition components and eventually stumble onto the problem. I wouldn’t worry too much about it however. Before cars had the advanced electronics they do today the only way you knew it had a misfire was if you could feel it. Most people never felt it and it stayed that way for years. The quickest way to discover what it is would be for the part that is causing it to completely fail then they will know what it is but that probably wont happen. I’m sure it’s annoying and I will be mad if my truck starts doing it but I would just drive it. They will put out a TSB about it eventually and then you can bring it in and get it fixed.

These are more followers than ordinary rocker arms. There is a "lifter" involved, and the "rocker arm" follows under the cam with these.
And there are bulletins about this - here's a quote from one regarding replacing a rocker arm if...........this is a direct quote from a MOPAR bulletin -
>>The symptom/vehicle issue is ticking/tapping noise from the upper engine area. In addition, this failure can also set a Diagnostic Trouble Code (DTC) for an engine misfire.<<

Even on non-overhead cam engines a worn or misaligned rocker arm can cause misfire.
Doesn't take much to cause it, either.
I had it happen on a Jeep engine before, abnormal wear, valve didn't open enough, misfire under load.

My solution to that sort of wear was this on this particular engine. I was tired of fussing with wear and poor alignment - (one of many dozens of engines I've built)

 

[Besch]

Calling Dealer this morning. Ess light on every now and then and check engine light is now on. 1700 miles.

 

[25rawls]

Calling Dealer this morning. Ess light on every now and then and check engine light is now on. 1700 miles.

Do you know what caused the light to come on or was it just on at a random start up?

 

[Besch]

No warning seems to be running fine

 

[JeepCares]

Calling Dealer this morning. Ess light on every now and then and check engine light is now on. 1700 miles.

Hi Bryan,
Just wanted to let you know that we have received your PM and will continue assisting you from there!
Alex
JeepCares

 

[25rawls]

Hi Bj,
Hopefully the dealer has identified the root of your concern. We are here to assist should you need it.
Alex
JeepCares

Update:
Was called to pick up my Jeep this evening. When I went to pick it up it was still in the shop and they were bleeding the coolant system. Was told they replaced all rocker arms since the code was for multiple cylinder misfire. After several minutes the technician told the service writer to put me in a rental since the CEL came back on with the same code. Since my wife has been off work over the holiday's I never went back to get a rental since the 26th when I originally dropped off my Gladiator. Since she dropped me off this evening with the assumption the repairs were complete, I am now in a Dodge Journey. I was told I would get a call tomorrow with an update. The technician told me he had the same issue with another Jeep sitting next to mine inside the shop.

Really losing hope over them being able to repair this with the research I have done. Sad thing is I really want my Gladiator and would probably take my chances on replacing this one with another if it comes down to them not finding a fix. Guess I should research what I should be doing in case that comes about.

 

[FL_glad8er]

Update:
Was called to pick up my Jeep this evening. When I went to pick it up it was still in the shop and they were bleeding the coolant system. Was told they replaced all rocker arms since the code was for multiple cylinder misfire. After several minutes the technician told the service writer to put me in a rental since the CEL came back on with the same code. Since my wife has been off work over the holiday's I never went back to get a rental since the 26th when I originally dropped off my Gladiator. Since she dropped me off this evening with the assumption the repairs were complete, I am now in a Dodge Journey. I was told I would get a call tomorrow with an update. The technician told me he had the same issue with another Jeep sitting next to mine inside the shop.

Really losing hope over them being able to repair this with the research I have done. Sad thing is I really want my Gladiator and would probably take my chances on replacing this one with another if it comes down to them not finding a fix. Guess I should research what I should be doing in case that comes about.

new to the forum...took delivery of my Gladiator Dec 4th, first ASS error after approx 200 miles, then CEL on permanently. Took vehicle to the dealership today, declared they are seeing this problem on multiple JT's no real answer keeping to try and diagnose.
will update with more info later.

 

[GlacierGladiator]

I bought a tazer to permanently disable auto stop start. Like I said before I dont think this misfire problem has anything to do with the internal component of the engine. Someone here had cylinders replaced, you had rocker replaced and the problem returns. My dealer wanted to tear into my engine and I refused to allow them to. At this point I'm just going to keep driving it and clear the code on the rare occasion that it returns with stop start disabled. If the engine blows it under warranty and it's been documented. I'm confident a TSB will come out before the 3/36k warranty is up. For now I'm going to enjoy it and stop worrying about it.. that's what warranties are for!

 

[JeepCares]

Update:
Was called to pick up my Jeep this evening. When I went to pick it up it was still in the shop and they were bleeding the coolant system. Was told they replaced all rocker arms since the code was for multiple cylinder misfire. After several minutes the technician told the service writer to put me in a rental since the CEL came back on with the same code. Since my wife has been off work over the holiday's I never went back to get a rental since the 26th when I originally dropped off my Gladiator. Since she dropped me off this evening with the assumption the repairs were complete, I am now in a Dodge Journey. I was told I would get a call tomorrow with an update. The technician told me he had the same issue with another Jeep sitting next to mine inside the shop.

Really losing hope over them being able to repair this with the research I have done. Sad thing is I really want my Gladiator and would probably take my chances on replacing this one with another if it comes down to them not finding a fix. Guess I should research what I should be doing in case that comes about.

Hi Bj,
We sincerely regret to hear about your continued concern. I know I have mentioned this previously, but just wanted to remind you that we can get a case escalated for you. This process will connect you with a Case Specialist to work with as well as document your concern within our system.

new to the forum...took delivery of my Gladiator Dec 4th, first ASS error after approx 200 miles, then CEL on permanently. Took vehicle to the dealership today, declared they are seeing this problem on multiple JT's no real answer keeping to try and diagnose.
will update with more info later.

Hi TD,
As mentioned to your fellow forum member above, we would be happy to connect you with a Case Specialist if needed. Our team is available via PM.
Alex
JeepCares

 

[Koja]

Mine was in Hazelwood Jeep for a week, could not replicate. two days out and its back same Missfire and auto shut off future.

 

[25rawls]

I am still waiting to hear from my Dealership since they replaced the rocker arms and that did not fix the issue. I have hope since there are only a few people who have spoken up about this issue and others seem to not have it.

 

[Koja]

I am still waiting to hear from my Dealership since they replaced the rocker arms and that did not fix the issue. I have hope since there are only a few people who have spoken up about this issue and others seem to not have it.

I wish more that are having issue will chim in. Every time I take mine in for these issues I print this thread out for the service dept. Hopefully either jeep cares or someone will figure out there's a issue

 

[Tim]

I wish more that are having issue will chim in. Every time I take mine in for these issues I print this thread out for the service dept. Hopefully either jeep cares or someone will figure out there's a issue

I had it happen once a week ago during a cross country trip from Wisconsin to New Jersey. I refueled in Ohio and while merging back onto I80 I had to get into the throttle quite a bit. During that harder than usual acceleration the check engine light flashed a few times and then turned off and the the ASS trouble light stayed lit. After shutting the truck off at the next fuel stop and restarting the light was off. I have not been able to reproduce the issue even under heavy acceleration.

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