Sheepdog#9S1
Member
- Thread starter
- #1
9.22.22
This is my first post on this forum, so I want to give a little background. I have always been a Toyota loyalist, and it would be embarrassing to disclose how many Toyotas I have had. I have always placed a paramount on reliability and ruggedness. My previous truck was a 2021 Tundra TRD PRO, which I traded in for my 2022 Jeep Gladiator Rubicon, 3.6-liter gas motor. The Tundra was too big and bulky for the thin trails in the trees and brush of Northern Arizona. I wanted to experience the legendary off-road capability of the Jeep platform, have dual locking solid-axles, and transition to an iconic USA made brand. I went FULL-SEND on the Jeep brand, also trading in my wife’s 2017 Toyota Highlander for a 2022 Jeep Grand Cherokee L Limited.
I bought the Rubicon brand new, and installed the Mopar 2” lift, 17” Black Rhino wheels, and 35” Falken A/T’s. At approximately 600 miles on the odometer, I was feeling and hearing an engine hesitation or stutter at approximately 1,600-1,800 RPM. The hesitation was most prevalent in 3rd gear, and it felt like fuel was cut off the motor for 1/16 of a second, then all the fuel was injected into the cylinders, causing an engine stutter, followed by a sudden lurch. If I accelerated quickly through the problem RPM range, like merging onto the freeway, no problem was presented. However, if I was in traffic or in our subdivision neighborhood, and stuck in the 1,600-1,800 RPM range, the problem was a HUGE pain in the butt. The problem became progressively worse, and I would experience the same hesitation and lurch in higher gears, all in the 1,600-1,800 RPM range.
At approximately 1,300 miles the check engine light began intermittently flashing, then going back off. I decided I had to take the JT into my local Jeep dealership. While en-route to the dealership, the truck downshifted so hard into first while coming to a stop I thought I might have been rearended by another vehicle. The service adviser plugged into my truck and found codes for multiple cylinder misfire. As of the time I am writing this post, the dealership had had my JT for several days with no diagnosis.
9.26.22
Four days later I picked up my JT from the dealership and nothing was done. The code number was P0300 – Multiple Cylinder Misfire, and it was not present when they technician looked at the truck. The technician test drove the Jeep (He indicated my Flowmaster exhaust enhanced engine noise?) and called it a day. They did advise there is a Star case number (S2218000019) documenting this problem on many other vehicles. However, their investigation is ongoing with no fix or repairs recommended. So, at this time I am stuck, and my Jeep is sketchy. My wife found a bunch of cases on Facebook of individuals complaining about the same code (P0300) from their 2022 Gladiator, so apparently, we are FAR from an one-off problem.
I have been so deflated by this issue, as the vehicle in brand new, paid-off, and already exhibiting engine reliability issues. Have I made a massive mistake? I am reaching out to more knowledgeable and experienced Jeep individuals for direction and advice.
This is my first post on this forum, so I want to give a little background. I have always been a Toyota loyalist, and it would be embarrassing to disclose how many Toyotas I have had. I have always placed a paramount on reliability and ruggedness. My previous truck was a 2021 Tundra TRD PRO, which I traded in for my 2022 Jeep Gladiator Rubicon, 3.6-liter gas motor. The Tundra was too big and bulky for the thin trails in the trees and brush of Northern Arizona. I wanted to experience the legendary off-road capability of the Jeep platform, have dual locking solid-axles, and transition to an iconic USA made brand. I went FULL-SEND on the Jeep brand, also trading in my wife’s 2017 Toyota Highlander for a 2022 Jeep Grand Cherokee L Limited.
I bought the Rubicon brand new, and installed the Mopar 2” lift, 17” Black Rhino wheels, and 35” Falken A/T’s. At approximately 600 miles on the odometer, I was feeling and hearing an engine hesitation or stutter at approximately 1,600-1,800 RPM. The hesitation was most prevalent in 3rd gear, and it felt like fuel was cut off the motor for 1/16 of a second, then all the fuel was injected into the cylinders, causing an engine stutter, followed by a sudden lurch. If I accelerated quickly through the problem RPM range, like merging onto the freeway, no problem was presented. However, if I was in traffic or in our subdivision neighborhood, and stuck in the 1,600-1,800 RPM range, the problem was a HUGE pain in the butt. The problem became progressively worse, and I would experience the same hesitation and lurch in higher gears, all in the 1,600-1,800 RPM range.
At approximately 1,300 miles the check engine light began intermittently flashing, then going back off. I decided I had to take the JT into my local Jeep dealership. While en-route to the dealership, the truck downshifted so hard into first while coming to a stop I thought I might have been rearended by another vehicle. The service adviser plugged into my truck and found codes for multiple cylinder misfire. As of the time I am writing this post, the dealership had had my JT for several days with no diagnosis.
9.26.22
Four days later I picked up my JT from the dealership and nothing was done. The code number was P0300 – Multiple Cylinder Misfire, and it was not present when they technician looked at the truck. The technician test drove the Jeep (He indicated my Flowmaster exhaust enhanced engine noise?) and called it a day. They did advise there is a Star case number (S2218000019) documenting this problem on many other vehicles. However, their investigation is ongoing with no fix or repairs recommended. So, at this time I am stuck, and my Jeep is sketchy. My wife found a bunch of cases on Facebook of individuals complaining about the same code (P0300) from their 2022 Gladiator, so apparently, we are FAR from an one-off problem.
I have been so deflated by this issue, as the vehicle in brand new, paid-off, and already exhibiting engine reliability issues. Have I made a massive mistake? I am reaching out to more knowledgeable and experienced Jeep individuals for direction and advice.
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