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fletcher969

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Everything posted by fletcher969

  1. Vehicle is new to us. Is this a Ford thing? I would expect during extended level-and-steady cruise - at the very least - that the TCC would be commanded to 100%/0 RPM lock up (Per TC_SLIPDSD PID). This transmission is commanded to full lock up...maybe 1% of the time during level-and-steady cruise.
  2. Hi all, 2.0L, 8F35 transmission Vehicle is new to us, and we hadn't yet played with Sport Mode. Yesterday I decided to give it a whirl, and I noticed that at times, seemingly randomly, whenever I would press the + paddle, the gear indicator would flash, and the transmission wouldn't shift. I read in the manual about condition-based gear unavailability, but these occurred during easy or normal acceleration and say for example 2500-3000 RPMs when I would expect it to shift without adverse RPMs resulting. No particular gear seemed to be implicated, although I would say it happened more often in 4-7. Any particular reason why this would happen?
  3. Hi all, As the title indicates, this is NOT the same loud tapping+rattle noise I previously posted about recently in another thread in this forum. The tapping described in this post only became evident AFTER that noise was fixed. Given how many people complain about EcoBoost tapping noises, and I've experienced two different varieties, I thought this solution might be worth sharing. Here's the tapping noise to which I'm referring in this post: https://drive.google.com/file/d/1QP4IAkaUk_68z3KxZwLQGhBsyfpaeFzx/view?usp=sharing Anyway, at the time of purchase this engine was pretty quiet for an EcoBoost engine based on the several I've heard. About 2 months ago the engine very quickly developed a loud tapping noise with some metallic rattling that ultimately was determined to be a failing HPFP (fuel pump) which was replaced by the dealer. There's an audio of that in my other post if you're interested. That fixed, the engine still had a loud tapping noise coming from the back driver's side of the engine, so I decided to see if I could pinpoint it with a stethoscope. Long story not-so-long, everything was pretty quiet, including the intake side cover and the HPFP until I touched the steth to the exhaust-side valve cover at Cylinder #1 (i.e. passenger side) where I heard the tapping noise; however, the injectors are on that side, so I considered those as a potential source. The noise got louder at Cylinder #2, but when I listened to the cover over #3 & #4 the sound was MUCH louder. At some point I touched the steth to the high pressure fuel line, and it was the same sound, same frequency, just a whole lot louder in the steth despite being silent to the naked ear. I thought about that for a couple of days, noticed something the umpteenth time I looked the engine over that I hadn't noticed before, and I formed a hypothesis: The high pressure fuel line was resonating inside the valve cover. I wondered what had changed, because again, the engine was quiet before the HPFP replacement. So what had I noticed? Turns out on this version of the 2.0L the HPFP was moved from the end of the exhaust side to the same end of the intake side, and in this configuration part of the high pressure fuel line passes over the exhaust-side valve cover where it is anchored to the top of the cover using a bracket and a bolt...over the #3 & #4 cylinders. There's a second bracket on the intake side, but it wasn't noisy there, so I didn't bother. I removed the exhaust side bolt (and noted it was really easy to loosen), and carefully and barely separated the bracket from the cover, had my GF start the engine, and the loud tapping noise was gone. I was correct - the fuel line was resonating inside the valve cover. My final assessment was that whenever the tech replaced the HPFP, he necessarily had to loosen and detach the fuel line brackets, but when he put everything back together, he forgot to torque the exhaust-side bracket bolt. As it loosened it allowed the bracket and bolt to vibrate at the same frequency as the HPFP fuel line, and that was transferred to and resonated inside the valve cover. Once I reinstalled the bolt and tightened everything down properly, no vibration, no noise. So, if for whatever reason you hear a tapping noise resonating from your valve cover, follow the high pressure fuel line, and make sure the bolts used to secure same are torqued tight. It could be a cheap and easy fix to an annoying, expensive-sounding problem.
  4. Hi all, Simple question for a 2020 turbo: Are they designed such that they do not go into open loop during WOT? If not, what should I be looking for that might be causing it to remain closed loop? As it is, the only time it goes into closed loop is during 'cold' idle, and whenever I let off the pedal while driving...usually to start coasting. Thanks.
  5. Hi all, Audio file and video link provided near the end of post. For the record, the shudders remain, but I'm working on identifying it using FORScan. Vehicle in question is my girlfriends. Purchased just shy of a month ago from a reputable dealership with a 3-month/3000 mile full warranty on the engine, drive train, and axles. Vehicle has good service history. It's been driven about 1000 miles since purchase, and it currently has about 97.5K miles on it. No CEL or other trouble indications. No issues whatsoever until this happened. This engine has been one of the quieter direct injection engines I've been around...until my girlfriend started it 2 days ago to run some errands. I heard it from 30' away, so I stopped her, and had her pop the hood. Sound seems to be coming from the top end, more rearward in the engine bay than forward, and more on the right side than the left. The sound lasted a full 10 minutes before I took it on a slooow test drive during which it lasted maybe another 5-10 minutes until I couldn't hear it in the cabin. It sounded pretty normal when I pulled into our driveway. At that point I decided to take it for a 'normal' speed drive, and I noticed during slow acceleration it had 2-3 slight but distinct shudders or 'hiccups' at what 'seem' to be shift points up to around 30 mph. The digital tach needle would 'flutter' about +/- 50 RPMs whenever I felt them. Sport was about the same, maybe slightly worse. Normal and aggressive acceleration seem normal and acceleration was snappy. I'm not sure the noise and shuddering are related, but it doesn't seem like a coincidence to me, but I know there were torque converter issues with some of these Edges. And for the record, fluid levels were checked the night before, and all was fine. Also, when my girlfriend started it up the next day after sitting for about 10 hours, the noise was there, but not as pronounced, and it quieted down after maybe 3-5 minutes. Nights have been cool for a change, but not cold. Any ideas? I want to be able to steer the dealer tech in the right direction just in case it's acting more subtly than what I captured in the audio/video (see below). I initially thought cam phaser(s), and/or timing chain, or turbo waste gate, but again, there were those shudders... BTW, the loud 'scraping' (rattle) sound you'll hear at about 6, 9, and 14 seconds is when the RPMs are dropping back down. Thanks. ----------------------------------------------------------- UPDATE: The odd metallic rattle/chain-scraping-like noise heard at 6, 9, and 14 seconds was identified as a failing HPFP (fuel pump) which was replaced along with its cam drive piston (whatever it's called). That took care of the noise you hear in the audio. For the record, after replacing the HPFP there was another tapping noise discussed here: Video and audio of the noise discussed in this post: https://drive.google.com/file/d/1CkJgT8a2biDWg7ZpLnIagJD2tjD-UOcY/view?usp=sharing PXL-20250903-062532269.mp3
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