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I have a 2017 Jeep Cherokee Latitude with 36,000 miles. Around 35K miles, I began to notice that my vehicle was driving a little rough and my MPG was low (15-16 MPG). I started with the obvious things - oil change and new filters. The rough idle remained, so I checked the spark plugs. The spark plugs were fouled so I had them replaced. The rough idle remained, so I made an appointment at my local dealership. They replaced all 4 ignition coil boots and updated the PCM and TCM (I believe this was their solution to the service shifter issue). On the way home, the vehicle was still running rough at idle. I gave it some time while I waited for my radio to be delivered (it had an internal error and had to be replaced). During this time, the vehicle began to randomly stall in the mornings and the rough idle was more apparent. I took it back a second time and the dealership diagnosed this as a bad fuel pump. The fuel pump was replaced but the rough idle could not be replicated according to the technician. A little over 1,000 miles later, my vehicle is still running rough on idle. Sometimes the problem is very subtle, other times it feels like I'm driving a tractor. My engine also sputters in the mornings when I first turn the vehicle on. This past week, I began to notice that my coolant temperature was increasing well past 230F. It has not set off any warning lights or messages, but has gone up to 247F. The coolant was topped off less than 1,000 miles ago, but it was well below the minimum yesterday. I topped it off to the max and it appears to have gone down to minimum in less than 24 hours. Could this all be related or am I dealing with separate issues? The service advisor at my local dealership thinks I'm crazy. Even the manager has brushed me off and has become non-responsive. Had I not purchased a MaxCare plan, I would've been dealing with some pretty expensive repairs. I joined this community in hopes of getting some advice on dealing with he dealership.
 

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Apparently, your friendly neighborhood dealership...Find a different one!!!馃馃槑
Watch Beard Bottle Font Suit
 
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Google , 2017 cherokee latitude rough idle no codes. there's some good reading on some causes and some fixes . I'm not a pro mechanic ao that's all I can help you with.Someone should chime on here with more expertise than me. good luck
 

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I know. I went to the less crappy of the two and this is the outcome. The first one wanted me to leave the car for two weeks and they would take a look at it when they had a chance. LOL
Which engine do you have???馃槑
 

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It could be an EVAP system issue. There was just someone else with similar issues, and it turned out to be a bad gas cap. The one thing that you don't want to do on our Cherokees is round up to the next dollar during a fillup. When the pump clicks off, it's full...馃槑
 
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Discussion Starter · #8 · (Edited)
It could be an EVAP system issue. There was just someone else with similar issues, and it turned out to be a bad gas cap. The one thing that you don't want to do on our Cherokees is round up to the next dollar during a fillup. When the pump clicks off, it's full...馃槑
Part of the notes from the last visit: "found liquid in the evaporative system, cleaned fluid and replaced fuel pump and vapor canister"

Now that I've read the STAR publication, it appears that the root cause of liquid fuel in the EVAP system is currently being investigated/verified by FCA. This was just a temporary fix.
 

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The loss of coolant and the overheating would have me looking at the internals of the engine and doing a compression test. You could very well have a leaking head gasket causing the engine to run like crap along with loss of coolant and overheating. You do not always have white smoke out the exhaust with a head gasket leak. My friend has a Chrysler 200 with the 2.4 as well and his head gasket was leaking. No past overheating to cause it to fail. Just one day starting running bad and coolant was disappearing.
 

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It's amazing that when all of this is going on and no CEL's! I have the 2.4L with just under 48,000 miles and have not experienced anything like you've mentioned.

The EVAP suggestion could really be a good one. I've had my TH for seven years and the coolant level is good. Have you tried to watch for any leaking when the engine is running at idle?
 

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Discussion Starter · #11 ·
It's amazing that when all of this is going on and no CEL's! I have the 2.4L with just under 48,000 miles and have not experienced anything like you've mentioned.

The EVAP suggestion could really be a good one. I've had my TH for seven years and the coolant level is good. Have you tried to watch for any leaking when the engine is running at idle?
It鈥檚 so strange to me that I haven鈥檛 gotten a check engine light or any other warning. The only warning message that has come up has been a low tire pressure warning message. I was on the freeway and it said my tire pressure was at 8 psi. It smelled like something was burning. I pulled over and manually checked my tire pressure. It was fine and the message cleared after restarting the vehicle.

I haven鈥檛 checked for leaks when the vehicle is running at idle but thank you for suggesting this. This will be my next thing to check.
 

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Discussion Starter · #12 ·
The loss of coolant and the overheating would have me looking at the internals of the engine and doing a compression test. You could very well have a leaking head gasket causing the engine to run like crap along with loss of coolant and overheating. You do not always have white smoke out the exhaust with a head gasket leak. My friend has a Chrysler 200 with the 2.4 as well and his head gasket was leaking. No past overheating to cause it to fail. Just one day starting running bad and coolant was disappearing.
I spoke to a new service advisor, who said it sounds like a problem with the head gasket. I'm taking it in tomorrow but it'll take about a week to diagnose. I was informed that they can no longer offer a goodwill rental since I just hit the end of my basic warranty. I hit 36,000 miles over the weekend while I waited for my appointment date. 馃檮 I'm not sure if it will help but I filed a complaint with Jeep Customer Care.
 

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I hit 36,000 miles over the weekend while I waited for my appointment date. 馃檮
Well, that sucks!!!馃槑
At least the work should be still covered under the powertrain warranty, if it does turn out to be head gasket related. That's pretty costly if it were out of pocket...馃槑
 

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I spoke to a new service advisor, who said it sounds like a problem with the head gasket. I'm taking it in tomorrow but it'll take about a week to diagnose. I was informed that they can no longer offer a goodwill rental since I just hit the end of my basic warranty. I hit 36,000 miles over the weekend while I waited for my appointment date. 馃檮 I'm not sure if it will help but I filed a complaint with Jeep Customer Care.
I would push back on this HARD, you have had the vehicle in for this issue prior to the warranty expiring and they 鈥渃ouldn鈥檛 duplicate鈥 you shouldn鈥檛 have to pay for their past incompetence. Plus they should offer a rental under powertrain warranty. Hopefully you get somewhere with customer care.
 

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You are getting good advice here, as usual.

At year #5, 38K miles, an engine oil leak was found on my TH and in order to find the source, the dealer had to remove quite a bit externally from the engine, clean everything, then start it up, let it run and shut it down and letting it cool, removing the same things they did initially and inspect it. They found it and fixed it, then again put everything back together and ran the engine and then looked for any leaks. There were none.

This took them five days and I was provided with a Dodge Ram 1500 free of charge. The moral of the story is, don't let them kid you, this is a WARRANTY claim and will be covered by the manufacturer.
 

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Discussion Starter · #16 ·
Thanks, everyone! I will definitely be pushing back and reminding them that this should be covered under the powertrain warranty. I was told to expect a call from their manager this afternoon, but of course that didn't happen.
 

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I have a 2017 Jeep Cherokee Latitude with 36,000 miles. Around 35K miles, I began to notice that my vehicle was driving a little rough and my MPG was low (15-16 MPG). I started with the obvious things - oil change and new filters. The rough idle remained, so I checked the spark plugs. The spark plugs were fouled so I had them replaced. The rough idle remained, so I made an appointment at my local dealership. They replaced all 4 ignition coil boots and updated the PCM and TCM (I believe this was their solution to the service shifter issue). On the way home, the vehicle was still running rough at idle. I gave it some time while I waited for my radio to be delivered (it had an internal error and had to be replaced). During this time, the vehicle began to randomly stall in the mornings and the rough idle was more apparent. I took it back a second time and the dealership diagnosed this as a bad fuel pump. The fuel pump was replaced but the rough idle could not be replicated according to the technician. A little over 1,000 miles later, my vehicle is still running rough on idle. Sometimes the problem is very subtle, other times it feels like I'm driving a tractor. My engine also sputters in the mornings when I first turn the vehicle on. This past week, I began to notice that my coolant temperature was increasing well past 230F. It has not set off any warning lights or messages, but has gone up to 247F. The coolant was topped off less than 1,000 miles ago, but it was well below the minimum yesterday. I topped it off to the max and it appears to have gone down to minimum in less than 24 hours. Could this all be related or am I dealing with separate issues? The service advisor at my local dealership thinks I'm crazy. Even the manager has brushed me off and has become non-responsive. Had I not purchased a MaxCare plan, I would've been dealing with some pretty expensive repairs. I joined this community in hopes of getting some advice on dealing with he dealership.
OK. I have a 2016 Jeep Cherokee 2.4l with 432,000 miles on it. When it was brand new, the first week off the lot, the engine would miss but no codes were thrown. Dealer kept it 11 days and finally changed an ignition coil to correct the problem. There was no code displayed. Following week, same problem. Dealer kept it 5 days to change out the #2 coil. Two weeks later, same problem. I told them to replace all the coils as I think they had an OEM problem from the supplier. I have not had a problem like that again until about 300k when I changed the ignition coils again. So check your coils and your plugs.

I did ask the dealer if they had good technicians and he said yes. I then asked him why he did not have a good mechanic....
I have never been back to the dealer for any kind of service. But when I do drive by, I here a big sucking sound and I instinctively grab my wallet.
 

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I have a 2017 Jeep Cherokee Latitude with 36,000 miles. Around 35K miles, I began to notice that my vehicle was driving a little rough and my MPG was low (15-16 MPG). I started with the obvious things - oil change and new filters. The rough idle remained, so I checked the spark plugs. The spark plugs were fouled so I had them replaced. The rough idle remained, so I made an appointment at my local dealership. They replaced all 4 ignition coil boots and updated the PCM and TCM (I believe this was their solution to the service shifter issue). On the way home, the vehicle was still running rough at idle. I gave it some time while I waited for my radio to be delivered (it had an internal error and had to be replaced). During this time, the vehicle began to randomly stall in the mornings and the rough idle was more apparent. I took it back a second time and the dealership diagnosed this as a bad fuel pump. The fuel pump was replaced but the rough idle could not be replicated according to the technician. A little over 1,000 miles later, my vehicle is still running rough on idle. Sometimes the problem is very subtle, other times it feels like I'm driving a tractor. My engine also sputters in the mornings when I first turn the vehicle on. This past week, I began to notice that my coolant temperature was increasing well past 230F. It has not set off any warning lights or messages, but has gone up to 247F. The coolant was topped off less than 1,000 miles ago, but it was well below the minimum yesterday. I topped it off to the max and it appears to have gone down to minimum in less than 24 hours. Could this all be related or am I dealing with separate issues? The service advisor at my local dealership thinks I'm crazy. Even the manager has brushed me off and has become non-responsive. Had I not purchased a MaxCare plan, I would've been dealing with some pretty expensive repairs. I joined this community in hopes of getting some advice on dealing with he dealership.
 

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My 2016 Cherokee Trailhawk 3.2 V6 had a little stint with rough idle/running problems. First thing I was told to look at was IBS sensor (Intelligent Battery System)..located on the negative battery cable which processes and delivers the exact amount of voltage required to operate each electrical system on the vehicle and will shut off power to non essential systems during certain electrical/mechanical failures to keep the vehicle running during such emergency situations. Long story short the root cause ultimately ended up being the #5 cylinder fuel injector ordered overnight and replaced it the next day about a 45 min job if you do it yourself. Took a little country drive maybe 2 hrs or so to let the IBS system get the new injector integrated/calibrated and synchronized...and just like magic engine smoothed out and has been running smooth for the past 7 months.
 

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