bigtexasthriller
New Member
Hi Everyone --
We have a 2006 Jeep Liberty 4x4.
Check engine light came on last month. Vehicle starts, but doesn't always move at first. Sometimes you need to restart it to go. It does run rough for a bit, but after you get driving, it gets warmed up and seems to run well. I took it to AutoZone and the code read P0300. They printed me a few pages and said the likely cause was a PCM sensor.
We took it next door to a well known, what I would call reputable auto repair chain (not an oil change, brake change, but engine repair). I told them what AutoZone said, and they said they really wanted to do the $99 diagnosis to be sure. After their diagnosis, they said our options were to either replace the engine (which really surprised me) or replace the valves.
I remembered we had a couple of recalls, so I took it to the dealer. They did the recall work and their diagnosis for the other issue was we needed a new battery, spark plugs, and some sort of three step engine cleaning process. We did all that, and still had the same issues.
So we brought it back to the dealer, and they now say the problem is the PCM module. They say we can drive it (I need it this weekend), but say the real issue is the PCM module -- not the sensor. They also say the problem only happens in the first 15-30 seconds after turning the vehicle on. That's similar to our experience, although my wife said it did stall on her while going up a hill.
Any thoughts/experience? We're confused by the different answers from techs.
Not sure if this would be related or would help with a guess -- there's also a whirring sound we've always had when we press the accelerator while the AC is on. We've owned this vehicle for a little over 2 years. Alternator checked out okay when we had it checked a couple years ago. The mileage is at 130K in case that helps.
Thanks everyone,
MJ
We have a 2006 Jeep Liberty 4x4.
Check engine light came on last month. Vehicle starts, but doesn't always move at first. Sometimes you need to restart it to go. It does run rough for a bit, but after you get driving, it gets warmed up and seems to run well. I took it to AutoZone and the code read P0300. They printed me a few pages and said the likely cause was a PCM sensor.
We took it next door to a well known, what I would call reputable auto repair chain (not an oil change, brake change, but engine repair). I told them what AutoZone said, and they said they really wanted to do the $99 diagnosis to be sure. After their diagnosis, they said our options were to either replace the engine (which really surprised me) or replace the valves.
I remembered we had a couple of recalls, so I took it to the dealer. They did the recall work and their diagnosis for the other issue was we needed a new battery, spark plugs, and some sort of three step engine cleaning process. We did all that, and still had the same issues.
So we brought it back to the dealer, and they now say the problem is the PCM module. They say we can drive it (I need it this weekend), but say the real issue is the PCM module -- not the sensor. They also say the problem only happens in the first 15-30 seconds after turning the vehicle on. That's similar to our experience, although my wife said it did stall on her while going up a hill.
Any thoughts/experience? We're confused by the different answers from techs.
Not sure if this would be related or would help with a guess -- there's also a whirring sound we've always had when we press the accelerator while the AC is on. We've owned this vehicle for a little over 2 years. Alternator checked out okay when we had it checked a couple years ago. The mileage is at 130K in case that helps.
Thanks everyone,
MJ