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Hello. Last October I got a used 2007 AWD Model with exactly 12500 miles on it. Crazy right?
Anyways after sorting out a brake issue that the dealership covered Things were fine for a few months. However last month it started stalling out randomly. Eventually found out is was probably the Camshaft sensors. So i replaced both of them and it ran great. For a week.
3 days ago I drove up to Indianapolis. It's around a 4 hour drive for me. It Ran great the entire way up. Then on the way back down ( around 40 mile from home) it started jerking/shaking really hard and the engine was revving up and down constantly, but it was worse when i accelerated. I noticed the issue was the worse between about 1800 and 2400 RPM. Witch is where it cruises at. above or below it was almost a none issue. Well today i Reset the ECU and did the relarning stuff and it's helped a lot, but it's still having issues. A buddy of mine who knows cars better then I says it's either a clogged Fuel filter or the Throttle Body Position Sensor. What do you guys think?
and yes i drove it that last 40 miles. also it never kicked into Limp Home Mode as I've found out is a thing.
Well For starters Resetting the ECM/ECU Naturally cleared the codes, but that wasn't my intention as I KNOW there is an issue. Basically I wanted to reset and Clear everything to ensure I was working from a clean slate so to speak, plus I secretly hoped it would fix it. Before I replaced the camshaft sensors I was getting a P0340 Code. Replacing them got rid of that and everything was fine. I don't know the exact code I'm getting ATM as a inspite of the issue it hasn't coded since I reset the ECM. Basically the engine still shakes and revs up and down constantly like it did before, however the range it does it in is tighter , doesn't shake nearly as hard, and now it it gets really bad between 60-70 mph instead of 45-60 mph. Took it out on a section of highway near the house to test it.
Current Running theory my friend has is the TPS has been going bad for some time and the camshaft sensors were able to make up for it somehow and I only started having issue when they finally wore out. Once replace I was fine again, Till my trip. I'll have to get it on a tester again to see if it's the TPS or not. I got back late from my trip Friday and wasn't able to make it out to anyplace with a tool today because of other thing I had to take care of (chores, mom doesn't seem to think me fixing my car is more important). We don't have one either.
I should note that it idles fine. and IF I'm able to get over 2400 RPM the issue is nearly nonexistent. however as it likes to sit at around 2k RPM it's an issue.
And to explain the range thing a bit better I looked at the cars MPG estimater at one point while it was happening and noted even on a level road with constant speed and a steady RPM it would fluctuate wildly between 6 and 30 MPG while it's shaking.
Okay. Got to AutoZone. Im still reading a P0345 on Bank 2. And i got a P0301 on Cylinder 1.
I replaced both so is it likely the cable to it is bad?
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