Alright so went ahead and did the logs and low and behold I did not know I couldn't rename the file before running the log
will redo on my way home tonight. I did happen to take a video of the vacuum gauge to show some of the issue.That makes some sense, would it be worth running a log with the throttle position sensor at idle at full temp? Wouldn't that rule out throttle body issues and lead further down the chain(intake runners, valves etc)? also wouldn't I have lower compression if it was valve train related?
Here are two quick logs I took cold and operating temp groups 060 091 093
There isn't a link.
Oh god my bad as soon as I get home I'll try and re-upload it
Ok so here are the logs for real this time haha
That's very odd cause I was just able to open it right up into excel on my phone. Did you extract it first I had to put it in a zip cause it was too large
Hey didn't see your reply till today. I will run that log tonight on my ride home. I Forgot I had this problem until it occurred again today. So I was cruising down the highway doing about 70mph and I was getting on to a connector and trying to slow down. I was off throttle and the car was not slowing down.... it started accelerating. I hit the breaks and it finally started slowing down. I looked over at my boost gauge and you could see it from going off throttle vacuum around -20ish to -8ish. In addition I had the pleasure of feeling the bucking/ surging violently again around 3800rpm- 4000 and got a looked at my boost gauge again going from -20 to -10ish and fluctuating back and forth between the two. Also full throttle feels significantly slower then full throttle. I believe its some sort of throttle valve or runner flap issue I don't think its injector or fuel related I think it must be some sort of valve I cant see it being a sensor because I feel like it would throw a code. I'm not sure if any of this is helping diagnose the underlying issue but I figured I would throw it out there.
So I just got back from running a log somehow my fourth gear WOT pull did not save, just my luck. I was able to recreate the bucking over 4k rpms on the highway. In the log you should see me holding of the throttle then lightly getting off the gas then immediately the bucking/surging occurs. I got it to do it maybe 3 or so times it feels absolutely awful on the drivetrain LOL. Hopefully tomorrow ill have some spare time to do another highway pull for some more data on the throttle valve angle. I also headed over to the stealership picked up an n80 valve and the hose that goes from the oil filter adapter to the pcv valve. I don't think the hose is bad but figured at 125k being an original plastic pipe its gonna fail sometime soon. None of these symptoms match a bad rear pcv valve line does it? Haven't replaced that yet so that'll probably be on the list at some point.
